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<strong>Bokmakierie</strong><br />

Newsletter of the Witwatersrand Bird Club<br />

December 2016 No 247<br />

WITWATERSRAND<br />

BIR D CLUB<br />

BirdLife<br />

SOUTH AFRICA<br />

Giving Conservation Wings


2016 Calendar Competition Entries<br />

Included on the inside front and back covers are a selection of photographs that were<br />

submitted but not selected for the calendar. They are however excellent photographs.<br />

Thank you again to all who took part.<br />

Natal Spurfowl - photos by Leslie Cornish<br />

Black-headed Heron - photos by Joan Maddern<br />

Secretarybird - photos by Karen Dixon<br />

African Fish Eagle - photos by Michelle Scott<br />

Lappet-faced Vulture - photos by Karin Mitton<br />

Gabar Goshawk - photos by Marcelle van Wyk


<strong>Bokmakierie</strong><br />

Newsletter of the Witwatersrand Bird Club<br />

December 2016 No 247<br />

Witwatersrand Bird Club<br />

P O Box 641 Cresta 2118<br />

Tel: 011 782 7267<br />

Fax: 086 512 7696<br />

Email: witsbc@mweb.co.za<br />

Web: www.witsbirdclub.org.za<br />

2016 Committee:<br />

HON. PRESIDENT:<br />

CHAIRMAN:<br />

VICE-CHAIRMAN:<br />

TREASURER:<br />

COURSES:<br />

CONSERVATION:<br />

EVENING MEETINGS:<br />

WEBSITE:<br />

SALES & MARKETING:<br />

PROGRAMME:<br />

EAST RAND CHAIR:<br />

HENLEY-ON-KLIP CHAIR:<br />

WEST RAND CHAIR:<br />

CLUB SECRETARY:<br />

Lance Robinson<br />

Andy Featherstone<br />

Koos van Dÿk<br />

Sandy Goodall<br />

Janice Isom<br />

Lance Robinson<br />

Lia Steen<br />

Thinie vd Merwe<br />

Dael Stojakovic<br />

Fiona van Zyl<br />

Awie Coetzee<br />

David Ludlow<br />

Koos van Dÿk<br />

Lauraine Leigh<br />

NOTICE TO CONTRIBUTORS<br />

<strong>Bokmakierie</strong> is published three times annually. Contributions<br />

may be in Afrikaans or English. English names of birds<br />

should be those used in Roberts VII. Views expressed are<br />

not necessarily those of the Editor, Club, the Committee,<br />

Members or those of BirdLife South Africa. The Editors<br />

reserve the right to edit articles as necessary.<br />

This issue of <strong>Bokmakierie</strong> has been produced and edited<br />

by Andy Featherstone and Lance Robinson.<br />

COVER PHOTO: Southern Carmine Bee-eater by<br />

Michelle Scott<br />

MAGAZINE LAYOUT: Andy Featherstone<br />

Inside this issue:<br />

4 Letter from the Chair<br />

5 Durban pelagic - October 2016 by<br />

Lesley Cornish<br />

7 Garden Observations by Mike Fullerton<br />

8 Bird ringing by Jim McLuskie<br />

12 Update on EWT Livestock Guardian<br />

Dog Project by Derek van der Merwe<br />

14 Marion’s Owl Award<br />

15 Bubo the Eagle Owl by Alf Craul<br />

16 Touring Botswana and the Caprivi Strip<br />

by Anthony Cavanagh<br />

20 Polokwane Nature Reserve: WBC trip<br />

16th – 18th September 2016 by Lesley<br />

Cornish<br />

24 The remarkable life of Darrel Charles<br />

Herbert Plowes compiled by Lance Robinson<br />

and Andy Featherstone<br />

28 There are still some Eden’s left by<br />

Louise Barlow<br />

30 Mass bird fatality in Vanderbijlpark,<br />

Gauteng by Dane Paijmans<br />

32 Cruising on the Queen Mary 2 by Anthony<br />

Cavanagh<br />

38 Two septuagenarian twitchers by Jim<br />

McLuskie<br />

40 Common Swifts Fly For 10 Months<br />

Without A Break - BirdGuides<br />

42 Birds’ beaks act as air conditioners -<br />

BirdGuides<br />

43 Rarities and unusual sightings report:<br />

15 November 2016 by André Marx<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 3


Letter from the Chair<br />

Dear Members,<br />

The December edition of<br />

<strong>Bokmakierie</strong> is the final one<br />

for the year and Lance and<br />

I hope that you will enjoy it.<br />

As with the last edition, we<br />

have tried for a more attractive<br />

layout with a selection<br />

of diverse articles, some<br />

written by our members<br />

and others selected from<br />

external sources.<br />

In November the Committee<br />

held our annual Bosberaad<br />

at Wakkerstroom where we<br />

discussed the overall state<br />

of the Club and made several<br />

decisions that will impact<br />

the club in 2017. The biggest<br />

challenge that we face is<br />

a financial one; simply put,<br />

the cost of running our Club<br />

far exceeds the income we<br />

receive from membership<br />

subscriptions and from any<br />

proceeds of outings, sales<br />

and evening meetings. We<br />

are more fortunate than<br />

most clubs in that we have<br />

monies invested that were<br />

bequeathed to the Club. As<br />

with any investment, these<br />

increase in value during the<br />

course of the year and it is<br />

this additional income that<br />

has kept us afloat to date.<br />

We are making every effort<br />

to improve the financial<br />

situation without making<br />

too much of an impact on<br />

what we can provide for our<br />

members. Unfortunately,<br />

one of the biggest cost-saving<br />

reductions that we have<br />

had to make is to reduce<br />

Lauraine’s working week,<br />

from three days to just two,<br />

and the office will now be<br />

open on Tuesdays and<br />

Wednesdays only, as from<br />

Tuesday 10th January.<br />

Before leaving for our Bosberaad,<br />

I sent an email to<br />

a number of our members<br />

asking for their thoughts on<br />

the Club’s current activities<br />

and how they thought that<br />

we could improve them.<br />

Thank you to those who<br />

contributed, you gave us<br />

some valuable insights into<br />

areas where we can try and<br />

improve things. An area that<br />

received fair criticism was<br />

that of the evening meetings<br />

and we will act on many of<br />

the suggestions, particularly<br />

in respect of the themes of<br />

the talks and the state of the<br />

venue. We have also taken<br />

note of the ideas proposed<br />

for outings, so some of<br />

these suggestions will start<br />

to filter through in our new<br />

programme. If you were not<br />

asked to give feedback but<br />

would like to give us your<br />

thoughts, it’s not too late,<br />

email either Lauraine, Lance<br />

or myself with your ideas.<br />

The 2017 70th Anniversary<br />

plans are progressing well<br />

and we will kick-start our<br />

big year with a talk by Geoff<br />

Lockwood, who will share<br />

fond memories and give<br />

some insightful history of<br />

the Club. Another talk not to<br />

be missed: Trevor Hardaker<br />

will be giving us insights into<br />

his passion for rarities and<br />

twitching on Saturday 18th<br />

February. To accommodate<br />

Trevor’s special talk, we will<br />

hold our AGM in March next<br />

year. Later in the year, we<br />

will have a cocktail party<br />

on Saturday 10th June, the<br />

nearest weekend to the<br />

actual date of our founding.<br />

Also in the pipeline is<br />

a winter balloon trip in the<br />

Pilanesberg area, a waders<br />

event with Faansie Peacock,<br />

a bumper Birding Big Day<br />

event in November and a<br />

special trip to round off the<br />

year.<br />

As many of you know there<br />

is a little Robinson due to<br />

enter this world early in the<br />

New Year. On behalf of the<br />

Club, we wish Lance and<br />

Hanneline every happiness<br />

with their new family<br />

member and look forward<br />

to meeting her (most likely<br />

with mini binoculars in the<br />

pram) in due course.<br />

With the festive season<br />

upon us many of you will<br />

be heading for holiday<br />

destinations or to visit family,<br />

if you are travelling please<br />

travel safely and enjoy the<br />

time away.<br />

Andy Featherstone<br />

4 | <strong>Bokmakierie</strong> December 2016 No 247


Durban Pelagic - October 2016<br />

Text and Photos by Lesley Cornish<br />

The weekend was an exercise in cramming<br />

in as much as possible: special<br />

dinner with Errol on Friday, buying lots<br />

of goodies at the photographic show on<br />

Saturday morning, then driving down<br />

to Durban (me working in the back of<br />

the car on print-outs) to have another<br />

adventure trying to reach our accommodation<br />

due to the Halloween Street Party<br />

which had closed most of the streets in<br />

the area. Also, a wonderful supper on<br />

Saturday night with the best scampi in<br />

South Africa (which rivalled UK scampi),<br />

getting up at 4.30 am on Sunday for the<br />

pelagic trip, and finally driving back to<br />

Johannesburg immediately after lunch,<br />

but we managed! Work was a bit of a<br />

struggle on Monday though.<br />

The pelagic trip was rough on the<br />

way out, then it rained, but only a bit.<br />

There was not too much about, but we<br />

soon saw White-chinned Petrels, then<br />

Flesh-footed Shearwaters, Arctic Terns,<br />

and Great-winged Petrels. Someone<br />

called Green Turtle, but I did not get onto<br />

it. Then, a scream of “Barau’s Petrel”, and<br />

there it was, about 600m off out starboard<br />

side. It was quite far, but recognisable<br />

because it was pale underneath,<br />

with a black carpal stripe and a dark<br />

back. I felt like shouting “Liferrr”, because<br />

I had missed it last year!<br />

Then it was back to clinging on, which<br />

I did not do very well, and I fell on the<br />

braai (giving me some interesting bruises<br />

to explain to Errol the following week)<br />

which had fallen off with a large wave,<br />

but been deftly rescued by the crew.<br />

The most common bird out at sea: White-chinned Petrel<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 5


One special sighting was<br />

a large school of Indian<br />

Bottle-nosed Dolphins<br />

which were making their<br />

way towards us. There<br />

were well over 50, and I<br />

had never seen so many<br />

dolphins together, and so it<br />

was a real thrill for me. We<br />

also saw two albatrosses:<br />

Indian Yellow-nosed and<br />

Shy, and a couple of Sooty<br />

Shearwaters (showing off<br />

their diagnostic silvery<br />

underwings).<br />

Barau’s Petrel: note the diagnostic black carpal joint on wing<br />

After what seemed like<br />

hours of being thrown around (with several people “down”), we stopped and threw out<br />

the chum. This was much better because now we were not beating our way forward.<br />

There were birds too. Not so many, and I was surprised that there were no storm<br />

petrels, but the White-chinned Petrels came in nice and close, and we also had some<br />

good close sightings Great-winged Petrels, including the possible Australian sub-species<br />

gouldi which has a paler face. We hung around quite a while drifting down the<br />

chum slick, and then repeatedly made our way back to the “top end” to drift down<br />

again. At one stage, there were about six petrels around us, and then another Barau’s<br />

Petrel came in close, so now I had some photographs of my lifer!<br />

It disappeared, but another<br />

Indian Bottle-nosed Dolphins<br />

6 | <strong>Bokmakierie</strong> December 2016 No 247


came in later (although<br />

not so close) from another<br />

direction, making at least<br />

three Barau’s Petrels! We<br />

threw out the second<br />

chum bucket at more-orless<br />

the same place, but<br />

who knows how far we had<br />

drifted (hopefully, the skipper<br />

did), and that brought<br />

in more petrels but nothing<br />

new. But who can complain<br />

about at least three<br />

Barau’s Petrels?<br />

Great-winged Petrel<br />

Eventually, we decided to call it a day and headed back to port. It was a smoother<br />

and quicker journey back because the wind was pushing us, and I even plucked up<br />

enough courage to have a beer to celebrate my lifer! Fairly close to the Durban, we<br />

saw a Humpback Whale. So thanks to Janice Isom for pushing me to join the trip.<br />

What an outcome: a lifer and I got all my work done in the car!<br />

Garden Observations<br />

Mike Fullerton<br />

submitted this<br />

photograph and<br />

reported that<br />

between 8 and<br />

10 African Green<br />

Pigeons were<br />

feeding on the<br />

new shoots of<br />

a Plane tree in<br />

Honeydew in<br />

August<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 7


Bird Ringing<br />

By Jim McLuskie<br />

HISTORY<br />

Man has been marking, or ringing birds, for over 2000 years, originally not for scientific<br />

reasons but for ownership purposes. In the Middle Ages, falconers fitted metal bands<br />

to the legs of their birds to indicate ownership. In the seventeenth and eighteenth centuries,<br />

ducks and swans were marked with metal collars by landowners. Later, marks<br />

were placed on pigeons, both carrier and racing pigeons. There is evidence that by<br />

1653, young salmon had ribbons attached to their tails to establish that, after their<br />

migration out to sea, they returned to their natal streams to breed.<br />

The marking of birds for scientific purposes was started in 1899 by a Danish school<br />

teacher. He placed rings on European starlings and the rings bore a return address<br />

and a date. Within a year he had accumulated a substantial number of recoveries. The<br />

first national ringing scheme was established on the Baltic coast in Germany in 1903.<br />

This was followed by many other countries before the First World War.<br />

The first ringing of birds in southern Africa was undertaken by the Witwatersrand Bird<br />

Club (WBC) in 1948. Members of the WBC scaled the cliffs of Skeerpoort to ring nestling<br />

Cape Vultures. One of those birds was later recovered in Zimbabwe.<br />

White-winged Flufftail in hand<br />

WHY BIRD RINGING?<br />

The recovery of the vulture illustrates<br />

one of the reasons that birds are ringed.<br />

Ornithology would still be in the Dark<br />

Ages were it not for bird ringing or<br />

marking. It has been described as the<br />

research tool that produced the most<br />

important results in ornithology during<br />

the 20th century. Much of our insight<br />

into bird movements and migration and<br />

our knowledge of population dynamics<br />

exists because individual birds have<br />

been uniquely marked and subsequently<br />

found either at the place of original capture<br />

or elsewhere.<br />

It is only by making a bird individually<br />

identifiable that we can learn about the<br />

individual’s movement, longevity, and<br />

social associations.<br />

8 | <strong>Bokmakierie</strong> December 2016 No 247


In this way aspects of the life histories of many bird species have gradually been<br />

unravelled, giving a new understanding of the movement of birds as well as raising a<br />

whole new set of questions relating to causes and factors contributing to population<br />

movement, dynamics and behaviour.<br />

In the 21st century, bird ringing remains the most cost-effective method of studying<br />

many aspects of the biology of most common bird species. That data, after analysis<br />

and collation, are found in the texts of many bird guides such as Roberts, as well as<br />

forming the foundation for many scientific studies.<br />

Measuring a Pied Kingfisher<br />

HOW ARE BIRDS RINGED OR MARKED?<br />

Birds are caught for ringing in a variety of ways. The method used most frequently<br />

to catch fully-grown birds is by mist-net. This is a fine net erected vertically between<br />

poles. It is designed so that when a bird flies into the net it drops down into a pocket. It<br />

is taken out of the pocket by an experienced ringer and put into a dry permeable bag.<br />

This is to keep the bird warm, dry and calm. Nets are visited frequently and the birds<br />

in the bags are processed quickly and gently.<br />

Birds are then taken to a ringing station, where they are kept in the shade until processed.<br />

The station is situated as near as possible to the nets without spooking the<br />

birds. Each bird is fitted with a light ring on its leg. Each ring has a unique number and<br />

the name of the ringing authority (University of Cape Town in the RSA). The ring is<br />

sized to fit the leg of the bird so that it does not chafe it. Various measurements are<br />

taken and age and gender are assessed. The bird is then released after checking its<br />

condition. The ring number, date, and location, as well as the measurements, are all<br />

recorded for subsequent sending to SAFRING in Cape Town.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 9


QUALIFICATIONS AND CONTROL<br />

SAFRING is part of the Animal Demography<br />

Unit at the University of Cape Town<br />

and it controls bird ringing in South Africa.<br />

It also assists other southern African<br />

countries.<br />

A potential ringer is trained by experienced<br />

ringers and has to reach a high<br />

level of competence before being tested<br />

by one of the country’s top ornithologists.<br />

This apprenticeship period usually<br />

lasts several years. If the test is successful,<br />

SAFRING is notified and it issues a<br />

numbered ringer licence. No ringer may<br />

operate independently without such a<br />

licence. In addition, the ringer requires a<br />

written permit from each province within<br />

which he plans to ring. Lastly, ringers<br />

must have the permission of the landholder<br />

where the ringing is to take place.<br />

SAFRING is the sole procurer and<br />

controller of rings in South Africa; it sells<br />

rings only to licenced, competent ringers.<br />

It is empowered to censure any ringer<br />

who brings bird ringing into disrepute.<br />

This may include withdrawal of license<br />

and letters to provincial nature conservation<br />

authorities, as well as no longer<br />

supplying rings.<br />

ETHICS of BIRD RINGING<br />

An open mist net at Waterfall Estate<br />

- The well-being of any bird caught and<br />

handled is the paramount consideration<br />

- A ringer may not operate more equipment than he or she can properly manage<br />

- A ringer may not allow unqualified persons to use his equipment to capture and<br />

handle birds or fit rings except under close supervision.<br />

- Catching birds should not be attempted under conditions that may result in birds<br />

becoming severely stressed or injured.<br />

10 | <strong>Bokmakierie</strong> December 2016 No 247


CONCLUSION<br />

Catching birds with mist<br />

nets or traps is an extremely<br />

important way<br />

to obtain scientific data.<br />

Several specialist working<br />

groups exist in South<br />

Africa and most of them<br />

include ringing as part of<br />

their activities. Examples<br />

are the South African<br />

Crane Working Group,<br />

the Raptor Conservation<br />

Group, the Vulture Study<br />

Group and the Western<br />

Cape Wader Study Group.<br />

Jim at the ringing station<br />

Most bird clubs have<br />

their own ringing groups and support ringing as an important source of ornithological<br />

knowledge, as does Birdlife South Africa and Birdlife International.<br />

All bird lovers are encouraged to support bird ringing and to take an interest in local<br />

activities. If anyone should find a live bird with a ring they should make a note of the<br />

ring number and the species before letting the bird go. They should also note the<br />

date and place of finding<br />

as well as the condition<br />

of the bird. These notes<br />

should be communicated<br />

to SAFRING.<br />

South African Bird<br />

Ringing Unit<br />

021 650 3434<br />

e-mail:<br />

safring@adu.org.za<br />

www.safring.adu.org.za<br />

Local enquiries:<br />

Male Fiery-necked Nightjar showing diagnostic markings<br />

on wing and tail<br />

Jim McLuskie 011 517 2597<br />

or 083 308 0093, who<br />

rings on the Waterfall estates<br />

and who welcomes<br />

interested visitors.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 11


Update on EWT Livestock Guardian<br />

Dog Project<br />

By Derek van der Merwe<br />

Carnivore Conservation Programme: Conflict Mitigation Field Officer<br />

Endangered Wildlife Trust<br />

We have had a very busy time as of late.<br />

We managed to place three new puppies<br />

as well as 4 alpacas, unfortunately<br />

one of the puppies has since passed<br />

away. This was very bad news as it was<br />

our first venture with a community. Unfortunately<br />

it was too late to perform an<br />

autopsy on the body, therefore we can<br />

only speculate as to the cause of death.<br />

We do believe that is was either a tick<br />

borne disease or a snake bite. We are<br />

very saddened by the loss as we have<br />

not lost a dog in a long time. Nonetheless<br />

we are not giving up as the community<br />

has had terrible losses to leopard in<br />

recent months and have poisoned two<br />

leopards since losing calves. Therefore<br />

it is imperative to educate and work with<br />

the community to reduce the conflict<br />

between the community and predators.<br />

Our other dogs are doing very well and<br />

are continuing to conserve predators on<br />

farmland and community land outside of<br />

protected areas. Our alpacas have been<br />

a huge hit with farmers in the Northern<br />

Cape, one of the reasons we are trialling<br />

alpacas is because we have struggled<br />

to successfully place Livestock Guardian<br />

Dogs with dorper sheep in the Upington<br />

area. Our biggest challenge was to bond<br />

the dogs to the sheep, because dorper<br />

sheep don’t have a herding instinct it was<br />

extremely difficult for the dogs to bond<br />

with the sheep and eventually one of the<br />

dogs sat at the water most of the day<br />

and wouldn’t allow the sheep to drink.<br />

12 | <strong>Bokmakierie</strong> December 2016 No 247<br />

The dogs have become rather large<br />

and the sheep remained intimidated by<br />

the dogs and because of the size of the<br />

camps it was very difficult to bond the<br />

dogs with the sheep. Two of the dogs in<br />

the Northern Cape are working successfully<br />

with goats and one is still working<br />

with a combination of sheep and goats.<br />

Because of this we spoke to a number of<br />

farmers in the area and one suggested<br />

we trial alpacas as he knew of a fellow<br />

farmer who was having a lot of success<br />

with alpacas as Livestock Guardian animals.<br />

So I went to meet him and decided<br />

to trial alpacas on these farms. We<br />

managed to source 4 male alpacas from<br />

a farm in the Western Cape. Females are<br />

just too expensive. We managed to place<br />

the four alpacas last month and recently<br />

split them up once we were happy with<br />

their condition as the veld in the Northern<br />

Cape is very different to the lush<br />

green Western Cape. My initial thoughts<br />

on the alpacas as well as the farmers is<br />

very positive. We have already witnessed<br />

guardian behaviour in the alpacas and I<br />

hope this continues. We will be collecting<br />

data and hopefully publishing the<br />

effectiveness of alpacas as Guardian<br />

animals.<br />

Bull was a very large male puppy and<br />

we were hoping he would be a huge<br />

success. He was going to protect cattle<br />

against leopard conflict in the area. Unfortunately<br />

he died unexpectedly. We are<br />

not sure of the reason for his death..


Diana has been placed on a farm with<br />

sheep and goats in the Waterberg.<br />

The third puppy has not received a name as of<br />

yet. However she is doing very well.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 13


Meet our latest bodyguards a first for the Endangered Wildlife Trust. These four alpacas have been<br />

placed on farms in the Northern Cape to protect sheep from jackal, caracal and brown hyena conflict.<br />

Marion’s Owl Award<br />

Marion Mengell, synonymous with Friends of Nylsvley (FoN), was the worthy<br />

recipient of a BirdLife SA Owl Award in October 2016. Congratulations Marion,<br />

we are very proud to be associated with FoN.<br />

14 | <strong>Bokmakierie</strong> December 2016 No 247


Bubo The Eagle Owl<br />

By Alf Craul<br />

Eyebrows rake upwards to end in tufted ears.<br />

A regal face belies savage intent, hidden in the gaze of round obsidian<br />

eyes.<br />

Night stealthily descends to rest on the gnarled branches of the Mamuti<br />

tree, standing sentinel on the river bank.<br />

Like a drug, the oppressive heat bonds with the pulsating sound of the<br />

Cicada bugs.<br />

The haunting call of a Rail splits the night air.<br />

Bubo replies, “Hok-Hok-Hok” …a warning grunt, as if to say…”I am here!”<br />

Pink eyelids, macabre in this setting, blink a warning signal.<br />

An indistinct sound from below causes his body to elongate, as he<br />

stretches in anticipation.<br />

Fearsome yellow-brown talons, in sharp contrast to white feathered legs,<br />

grip the branch a little tighter.<br />

Like a trapeze artist preparing to leap.<br />

Oblivious to the danger above, a mongoose hunts.<br />

A careless step, on a dry Mopane leaf, announces its presence and signals<br />

its death.<br />

Bubo’s head slowly turns , eyes and ears focused on the prey.<br />

A Nightjar calls, “Good Lord deliver us!” …..<br />

On silent wings, with razor sharp talons<br />

spread wide,<br />

Bubo swiftly swoops in for the kill.<br />

In a beating of wings on Mopane scrub, a<br />

dust cloud rising from dry thirsty ground, the<br />

mongoose perishes without a sound.<br />

The bushveld is silent, nothing moves.<br />

Death has arrived!<br />

The Mamuti tree watches silently as a giant<br />

beak ferociously tears flesh from bone.<br />

Satiated, Bubo reverts to his motionless,<br />

sentry state.<br />

Ear tufts erect.<br />

Maybe tomorrow an errant guinea fowl<br />

will cross his path …<br />

Once again the nightjar sings!<br />

Verreaux’s Eagle Owl (Bubo lacteus)<br />

- photo by Warwick Tarboton<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 15


Touring Botswana and the Caprivi<br />

Strip<br />

Text and Photos by Anthony Cavanagh<br />

The Okavango Delta in Botswana is a jewel in the dry Kalahari and its life-giving<br />

waters create one of Africa’s greatest concentrations of wildlife. Summer rains in the<br />

Angolan highlands drain into the Okavango River, which flows 1 200 km south into the<br />

flat arid area of northern Botswana, eventually spreading out and covering an area<br />

up to 15 000 square kilometres during the peak flood between June and August.<br />

Although not the largest inland delta in Africa, the magnificence of the Okavango<br />

Delta helped in it being named one of the Seven Natural Wonders of Africa and also a<br />

World Heritage site.<br />

One of the many elephants encountered<br />

Sue and Anthony together with friends Gavin and Joan<br />

In July Sue and I, together with friends Gavin and Joan, embarked on a tour of Botswana<br />

and after spending a few days in Gaborone and also visiting the Magadikgadi<br />

Pan we arrived in Maun situated on the edge of the Delta. We stayed at Audi Camp a<br />

few km north of the town and booked a boat trip for the following day. The floodwaters<br />

flowed strongly in the channel overlooked by the camp and once the four of us<br />

were aboard the boat, our pilot headed upstream towards the wide-open wetlands of<br />

the Delta. The birdlife is stunning and some of the species we saw included Swamp<br />

Boubou, African Golden Weaver, Coppery-tailed Coucal, Slaty Egret, African Openbill,<br />

African Pygmy Goose and Saddle-billed Stork. Elephants were plentiful as were the<br />

Lechwe.<br />

16 | <strong>Bokmakierie</strong> December 2016 No 247


The waters stretched as far as one could see and the numerous channels created<br />

many small low-lying islands where basking crocodiles warmed themselves in the<br />

winter sun. Local residents fished from their traditional mokoros and tourists were<br />

Sable Antelope<br />

African Fish Eagle<br />

African Skimmers<br />

White-fronted Bee-eater<br />

being leisurely poled along in other mokoros. The Delta is indeed a watery paradise in<br />

a country covered mostly by semi-desert.<br />

After leaving Maun we drove southwestwards towards Lake Ngami, which at this<br />

time of year was benefitting from the seasonal floodwaters from the Delta, and then<br />

northwards adjacent to the Delta and on to Shakawe. En route we came across a few<br />

road-kill sites with dozens of vultures scrapping over cattle carcasses. Drotsky’s Cabins,<br />

10km south of Shakawe, was our next port of call and came well recommended.<br />

It didn’t disappoint, as the lodge facilities were excellent as were the large campsites,<br />

each being very private and having individual ablution blocks. Drotsky’s overlooks the<br />

Okavango River in an area known as the Okavango panhandle. Here the river is some<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 17


600m wide and from where it enters Botswana, it flows southwards for 70km where<br />

it then fans out into the alluvial plain of the delta thus providing the Delta with its main<br />

source of water.<br />

On our boat trip, we had excellent sightings of Little Bittern, Long-toed Lapwing,<br />

White-browed Coucal and dozens of White-fronted Bee-eaters nesting in holes<br />

on the steep earthen riverbank. Our target bird was the Pel’s Fishing Owl, which is<br />

a mega sighting for any keen birder. Our guide saw the Pel’s about 50m inland and<br />

said he would talk to the owners of the property to ask if we could walk on their land<br />

and approach the Pel’s for viewing purpose. Permission was declined but our guide<br />

had thoughtfully then disturbed the bird, which flew towards the river and sportingly<br />

perched very visibly and long enough for us to take some fine close-up photos. Another<br />

excellent sighting from the river was that of the Western Banded Snake Eagle.<br />

Needless to say, we showed our great appreciation to our guide in the time honoured<br />

customary manner.<br />

Pel’s Fishing Owl<br />

18 | <strong>Bokmakierie</strong> December 2016 No 247<br />

Bradfield’s Hornbill<br />

The woodland areas around the campsite had an abundance of birdlife and notable<br />

sightings included, Brown and Red-billed Firefinches, Green-backed Honeybird,<br />

Black-faced and Hartlaub’s Babblers, African Yellow White-eye, Southern Whitefaced<br />

Owl and Greater Swamp Warbler. Cape Clawless Otters were seen in the<br />

stream below the campsite.<br />

The Caprivi Strip is a narrow protrusion of Namibia that extends some 450km eastwards<br />

north of Botswana and south of Angola and Zambia. It is named after German<br />

Chancellor Leo von Caprivi who in 1890 negotiated with Britain for the acquisition of


this land in exchange for the island of Zanzibar. Germany had wanted access from<br />

German South West Africa to the Zambezi River and a route to the German colony of<br />

Tanganyika on the east coast.<br />

We crossed the Botswana border into Namibia and drove along the Caprivi Strip to<br />

Katima Mulilo the largest town in the area, and then on to Island View Lodge some<br />

30km further east of the town and situated on the banks of the Zambezi River. Our<br />

campsite had superb views of the river and after setting up the tents we got the fire<br />

going and enjoyed the sights and sounds of the African bush while downing a few<br />

cold beverages.<br />

The next day on our boat<br />

trip on the Zambezi we<br />

had good sightings of<br />

Senegal Coucal, African<br />

Marsh Harrier, Whitecrowned<br />

Lapwing and<br />

African Skimmers. Around<br />

the camp, regional<br />

specials included Whitebrowed<br />

Robin-chat<br />

(Heuglin’s Robin), Whitebrowed<br />

Coucal and Schalow’s<br />

Turaco.<br />

Our final destination was<br />

Coppery-tailed Coucal<br />

Kasane back in Botswana,<br />

where we stayed in a<br />

lodge about 30km out of town. The area around Kasane abounds with game and as<br />

there are no fences. Elephants, jackals, bushbuck and other animals often halt traffic<br />

as they walk across the road. Kasane is very close to Africa’s Four Corners where the<br />

four countries of Botswana, Namibia, Zambia and Zimbabwe meet and kilometre long<br />

truck queues lined the road leading down to the Zambian border crossing at Kazungula.<br />

We took a small motor launch on the Chobe River and our guide showed us the<br />

breeding colonies of Yellow-billed Storks and White-breasted Cormorants. We followed<br />

the river upstream and entered the Chobe Game Reserve where we had to sign<br />

in, and then continued up the river to where herds of game could be seen on the flood<br />

plain and on low-lying islands. Lechwe, in particular, were plentiful as were hippo and<br />

crocodile. Elephant by the score could be seen in the park and we were also fortunate<br />

to see a male Sable Antelope. On the Namibian side of the river, a bushfire was raging<br />

and Southern Carmine Bee-eaters were having a field day catching fleeing insects.<br />

Other interesting sightings up river were Ringed Plover and Collared Pratincole, and<br />

Collared Palm-Thrush near the landing deck.<br />

Back at the lodge, there were dozens of Greater Blue-eared Starlings, Southern Red-<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 19


Billed Hornbills, Bradfield’s Hornbill and a number of Pearl-spotted Owlets. Every<br />

evening elephant walked freely in front of the chalets and drank at the waterhole to<br />

the delight of the many tourists watching from the viewing deck.<br />

Alas, the time came for us to head back home and we drove down through Nata and<br />

Francistown and crossed into South Africa at Martin’s Drift. We did, however, manage<br />

to spot another Botswana special 62 km north of Francistown where we all saw the<br />

Boulder Chat, which has a very small range in Botswana.<br />

Botswana is a land of contrasting beauty, with vast areas being sparsely populated<br />

dry and dusty semi-desert, and then with oases of lush vegetation and abundant<br />

water supporting a magnificent diversity of people and wildlife.<br />

Sue and Anthony enjoying<br />

the river cruise<br />

Sunset over the Delta<br />

20 | <strong>Bokmakierie</strong> December 2016 No 247


Polokwane Nature Reserve: WBC Trip<br />

16th – 18th September 2016<br />

Text and Photos by Lesley Cornish<br />

Much to my shame I had never heard of this reserve, and with so many friends going, I<br />

thought we should go too. So I booked a day’s leave, went to Wits, gave two lectures<br />

(well, 10.00am is a bit blatant to bunk, even on a Friday) and set off via the CSIR to<br />

collect samples for a student (the samples then were trapped at Wits because it was<br />

closed since the students were demonstrating - not my students – they are MUCH<br />

better behaved). Once in Polokwane, we go lost trying to find the place, so did a few<br />

other people. When we were ‘un-lost’ we were not allowed in, but luckily Lauraine had<br />

just arrived, so she could vouch for us and we were let in. That night, we were gently<br />

lulled to sleep by Fiery-necked Nightjars, and then rudely awakened by the peafowls<br />

calling, several times over.<br />

The next day, there was a<br />

long convoy at the gate for<br />

6.00am for us to go into<br />

the park. Our target bird<br />

was Shelley’s Francolin,<br />

but it was not complying.<br />

However, we saw Marabou<br />

Storks by the pan, had lovely<br />

views of Short-clawed<br />

Lark doing its display: fly<br />

and call, then fold wings<br />

and plunge earthwards.<br />

We had a long debate<br />

about a pale-looking hornbill-shaped-thingy<br />

in a tree,<br />

Marabou Storks<br />

and Selwyn told me to<br />

a photo which revealed it<br />

to be a Spar bag (a lifer?).<br />

We drove around the<br />

reserve and saw a lot of<br />

dust, as well as Ant-eating<br />

Chats, Crimson-breasted<br />

Shrikes, Lesser Honeyguide,<br />

Long-billed Crombec,<br />

Yellow-bellied and<br />

Burnt-necked Eremomelas<br />

(three of the latter chasing Short-clawed Lark<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 21


Welcome<br />

New<br />

Members<br />

Pied Avocets<br />

each other around), Scaly-feathered Finch, Red-breasted<br />

Swallows, many Northern Black Korhaans flying<br />

around, and both Speckled and Red-faced Mousebirds.<br />

There were also many more ostriches than I have seen<br />

for ages. We had good views of Long-billed Pipits and<br />

a White-browed Scrub Robin which even allowed us to<br />

take some photographs.<br />

At the picnic site, we saw a Brubru, African Hoopoe and<br />

Common Waxbills, then walked to the pan where there<br />

were Tawny-flanked Prinias, Cape Grassbird (and a dead<br />

Wildebeest). Then it was back for a very quick lunch.<br />

In the afternoon we went to the sewage works and<br />

ticked off a good number of waterbirds, as well as<br />

White-fronted Bee-eaters (well, they are often near<br />

water…) and Wattled Starlings. There were Comb<br />

Ducks, Black Crakes, African Jacanas, Wood Sandpipers,<br />

Black-crowned Night Herons and Ruffs. Next,<br />

we headed north, on the Alldays Road to a dam, and I<br />

began to worry that we were going to Kariba (and I had<br />

not brought my passport). We finally arrived, and Selwyn<br />

negotiated with security to let us in, and it was well<br />

worth it: a flock of Pied Avocets, White-faced Ducks,<br />

Red-billed Teal, Little Stints, Three-banded Plovers,<br />

Egyptian and Spur-winged Geese, White-winged Tern<br />

and a small herd of Nyala. On leaving, there was some<br />

confusion, and some went off to successfully bag a<br />

Shelley’s Francolin, and some did not.<br />

Judith Cornish<br />

- Boksburg<br />

Hester & Eugene<br />

Dann - Cresta<br />

Jane Doherty<br />

- Auckland Park<br />

Dave Douglas<br />

- Braamfontein<br />

Gavin Ford<br />

- Lonehill<br />

Ian Gericke<br />

- Randburg<br />

Sue Goodman<br />

- Kyalami<br />

Haroldina Jonker<br />

- Pine Park<br />

Liesel Jonkheid<br />

- Craighal<br />

Amanda & Dion<br />

Koekemoer<br />

- Horison<br />

Gerda & Gerhard<br />

Schoombie<br />

- Helderkruin<br />

Stephen & Shelley<br />

Sherwood<br />

- Bedfordview<br />

Annie Sugrue<br />

- Greenside<br />

Lieben & Denise<br />

Swanevelder<br />

- Strubens Vallay<br />

Kobus Theunissen<br />

- Noordheuwel<br />

Paul van Beek<br />

- Sandton<br />

22 | <strong>Bokmakierie</strong> December 2016 No 247


It got quite chilly and rained that night,<br />

not much, but enough to make the tents<br />

and vehicles grubby, and to shut the<br />

peafowls up!<br />

The next day most went off to Tzaneen<br />

in the drizzle, but we went looking for<br />

the Shelley’s Francolin, where it had<br />

been seen the previous evening. Alas,<br />

we had no luck, but we did have much<br />

better sightings of the previous day’s<br />

birds: Common Scimitarbill, Crested and<br />

Black-collared Barbets, Magpie Shrike,<br />

Common Fiscal, and our first Darkcapped<br />

Bulbul. We also saw Whitewinged<br />

Widowbird (not yet in breeding<br />

plumage), White-crested Helmet-Shrikes<br />

and a Yellow-throated Petronia. Near the<br />

pan we saw a large bird party and that<br />

kept us entertained. There was also a<br />

Bennett’s Woodpecker. I heard an Acacia<br />

Pied Barbet calling in camp, and am<br />

now curious to know if the Australians<br />

will let us still call it that.<br />

Polokwane Nature Reserve is well<br />

recommended, just remember that the<br />

turn-off is near the large, new stadium,<br />

White-browed Sparrow-weaver<br />

White-browed Scrub Robin<br />

and on the other side of the road. I want<br />

to go back once there has been some<br />

(proper) rain.<br />

Thank You for Your Donation<br />

Anthony & Sue Cavanagh<br />

John Farrant<br />

Andy Featherstone<br />

Barbi Forsyth<br />

Gillian Preston<br />

Lance Robinson<br />

Koos van Dÿk<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 23


The Remarkable Life of Darrel<br />

Charles Herbert Plowes<br />

Compiled by Lance Robinson and Andy Featherstone<br />

We were saddened to hear of the passing<br />

of one of the Club’s Honorary Members,<br />

Darrel Plowes. Born in Estcourt,<br />

KwaZulu-Natal, on 4th April 1925, he<br />

died in Mutare, Zimbabwe, on 19 October<br />

2016. Darrel was one of the founder<br />

members of Wits Bird Club. He attended<br />

the 60th Anniversary celebrations<br />

of the club in 2007. At that celebration<br />

lunch, John Freer, then Honorary President<br />

welcomed him, amongst others.<br />

Darrel’s curriculum vitae is nothing short<br />

of impressive. We have taken some excerpts<br />

from this to have a better understanding<br />

of Darrel’s massive contribution<br />

to natural science.<br />

Darrel’s interests included photography,<br />

birds, succulent plants, botany, butterflies,<br />

orchids, mammals, fish, reptiles,<br />

archaeology and palaeontology, prehistoric<br />

rock art, insects, etc., together<br />

with a deep and lifelong concern for<br />

ecological and environmental matters.<br />

He helped found the Mutare Museum<br />

and was a member of the Board of<br />

Trustees. He was the study leader on<br />

several Rhodesian Schools Exploration<br />

Society and Outward Bound natural<br />

history expeditions. His collection of<br />

30,000 35mm colour slides has been<br />

used by leading publishers in many<br />

countries for textbooks, prestige books,<br />

travel guides, and museum displays.<br />

These slides have now been digitised<br />

and appropriate topics will be donated<br />

to relevant institutions. Darrel was a very<br />

busy pensioner; he undertook numerous<br />

The late Darrel Plowes<br />

environmental impact studies, all over<br />

Africa. He published numerous scientific<br />

papers over an astounding 72 years,<br />

from 1943 to 2015.<br />

In particular, Darrel dedicated a major<br />

effort to securing the legacy of Sir<br />

Stephen and Lady Virginia Courtauld,<br />

through their bequest of the La<br />

Rochelle property to the National Trust<br />

of Zimbabwe. His early professional<br />

association with the Courtaulds led to<br />

the establishment of the Kukwanisa<br />

agricultural training centre at Watsomba,<br />

and subsequenty he became a personal<br />

24 | <strong>Bokmakierie</strong> December 2016 No 247


Darrel at work<br />

friend of the Courtaulds with shared<br />

interests in orchids and natural history.<br />

Natural History Activities<br />

Darrel collected birds, reptiles, and<br />

insects for the Transvaal Museum in<br />

1942 while at Oranjemund, Namibia,<br />

and discovered a new legless lizard,<br />

Typhlosaurus plowesii, and a new race<br />

of mole-rat, Bathyergus janetta plowesii.<br />

He commenced botanical collecting,<br />

whilst at university, and discovered a<br />

new succulent, Euphorbia clivicola. In<br />

the Chimamimani Mountains on the<br />

Zimbabwe/Mozambique border, Darrel<br />

collected Aloe plowesii, two new flowers,<br />

Dierama plowesii and Dissotis pulchra,<br />

and a new genus of grass, Gazachloa<br />

chimanimaniensis. He collected over<br />

6000 herbarium specimens, lodged<br />

mainly at Harare, Pretoria, and Kew Herbaria,<br />

many were new records.<br />

His comprehensive collection of birds’<br />

eggs is housed in the National Museum,<br />

Bulawayo. He provided eggs to Dr Hugh<br />

Cott at Cambridge, and Dr Charles Sibley<br />

at Cornell, for palatability and electrophoresis<br />

studies respectively. He also<br />

assisted Dr Herbert Friedmann of the US<br />

Museum of Natural History with studies<br />

on parasitic birds in Zimbabwe. Darrel<br />

discovered two new races of the Cape<br />

Bunting (Fringillaria capensis plowesii,<br />

and F. capensis smithersii – and was<br />

author of the latter). He commenced<br />

collecting butterflies in 1955 and collected<br />

Aloeides plowesii at Nyanga.<br />

Furthermore, he collected, studied and<br />

photographed stapeliads (succulent<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 25


Afro-Indian members of the Apocynaceae<br />

family) for 70 years in 18 countries<br />

and grew 6000 of these plants for study<br />

and world-wide distribution to botanical<br />

institutions, nurseries, and hobbyists.<br />

Darrel described several new genera<br />

and many species of stapeliads and also<br />

a new aloe (A. inconspicua). He discovered<br />

Huernia plowesii and several other<br />

new stapeliads.<br />

Botanical specimens are lodged at<br />

SRGH, Harare, Zimbabwe, and at PRE,<br />

Pretoria and Kew.<br />

He was honoured in the names of several<br />

species and this will form part of his<br />

enduring legacy:<br />

• Typhlosaurus plowesii A. Roberts<br />

(legless lizard)<br />

• Janetta bathyergus plowesii A. Roberts<br />

(mole rat)<br />

• Aloe plowesii Reynolds (Aloe)<br />

• Fringillaria capensis plowesii Vincent<br />

(bird)<br />

• Aloeides plowesii Tite & Dickson<br />

(butterfly)<br />

• Dierama plowesii Burtt Davy & Hilliard<br />

(flower)<br />

• Huernia plowesii LC Leach (succulent:<br />

stapeliad)<br />

• Echidnopsis plowesianum G. Orlando<br />

(succulent: stapeliad).<br />

• He made the award-winning film<br />

‘Black Eagle Fly Free’ (1975).<br />

Affiliations<br />

• Fellow of both the American and<br />

the Zimbabwe Cactus and Succulent<br />

Societies.<br />

• British Cactus & Succulent Society<br />

• International Asclepiad Society<br />

• BirdLife South Africa<br />

• BirdLife Zimbabwe<br />

• Witwatersrand Bird Club<br />

• Botanical Society of South Africa<br />

• Wildlife & Environment Society of<br />

Zimbabwe<br />

• Zimbabwe Orchid Society<br />

• National Trust of Zimbabwe<br />

• Honours and Awards<br />

Darrel was awarded the Bronze Medal<br />

First Prize South African Documentary<br />

Film Festival for film ‘Black Eagle Fly<br />

Free’. He was selected to photograph the<br />

first day of the new millennium in Zimbabwe<br />

for the project ‘Daybreak 2000’.<br />

26 | <strong>Bokmakierie</strong> December 2016 No 247


A message from John Freer:<br />

Darrel Plowes was one of several of the original team, including Dr<br />

Wilhelm Gilges and family, Hugh Ashton and later Dick Harwin who left us<br />

to move north to Rhodesia. We gave Darrel Honorary Life Membership on<br />

the occasion of our 50th anniversary. We invited him to our 60th birthday<br />

celebration lunch which he attended from Zimbabwe. It was great to have<br />

him with us. Our condolences to his family and friends in his passing in<br />

the course of the Club’s 70th year.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 27


There are still some Eden’s left<br />

By Louise Barlow<br />

There is nothing better than cruising<br />

down the river on a sunny afternoon<br />

with an abundance of nature and wildlife<br />

flourishing to the left and right, animals<br />

roaming around freely and a cool breeze<br />

blowing in your hair.<br />

This we found on both the Zambezi and<br />

Chobe rivers recently. Our cruise on the<br />

Zambezi was thrilling, with many African<br />

Darters sunning their wings, many<br />

egrets and African Skimmers noted for<br />

their freshly painted pretty red beaks.<br />

Also, Egyptian Geese, Reed Cormorants,<br />

Water Thick-knee, Helmeted Guineafowl,<br />

Goliath Heron, African Jacana and African<br />

Sacred Ibis all feeding peacefully on<br />

the islands and along the river bank, Of<br />

course the overseas guests were excited<br />

to see crocs lazing on the banks and the<br />

hippos bobbing up and down in unexpected<br />

places, one opened its mouth as<br />

wide as possible. It was from the balcony<br />

of the amazing Kingdom Hotel that I<br />

had my first sighting (ever) of the fabulous<br />

Trumpeter Hornbill in a faraway tree,<br />

making terrible noises. This hotel has a<br />

small natural stream flowing through it<br />

where a Pied Kingfisher found great joy<br />

diving again and again for small fish and<br />

an African Pied Wagtail bobbing around<br />

on the rocks, the Red-winged Starlings<br />

were acting up all over the place as<br />

usual. Wild animals and even some deer<br />

come up to fences.<br />

The Chobe River was just as magical,<br />

more African Darters, Spur-winged<br />

Geese, a Bateleur on a distant tree, Grey<br />

Herons, Long-toed Lapwing, pratincoles,<br />

African Spoonbills, Yellow-billed<br />

Stork, White-crowned Lapwing, African<br />

Wattled Lapwing, Common Sandpipers,<br />

it wouldn’t be Africa without the African<br />

Fish Eagle giving forth its plaintive cry,<br />

Grey-headed Gulls, Squacco Heron,<br />

Black-crowned Night-Heron, more<br />

African Skimmers, White-faced Ducks<br />

and African Openbill Storks. There were<br />

many elephants, buffalo, the giraffe were<br />

further away and the rhinos had been<br />

spirited away for safe-keeping. I just<br />

loved that the Baobab trees had planted<br />

themselves in the strangest places all<br />

over the country.<br />

At Nata Lodge, in a lovely little-wooded<br />

area, a couple of the Arrow-marked<br />

Babblers fussed about and a wonderful<br />

Coppery-tailed Coucal whose call first<br />

caught my attention early one morning,<br />

many Grey Go-away birds, African Redeyed<br />

Bulbuls and Southern Yellow-billed<br />

Hornbills. Driving across the vast Makgadikgadi<br />

salt pans, we saw about twenty<br />

to thirty Lesser and Greater Flamingos,<br />

Blacksmith Lapwing, Pied Avocet, Blackwinged<br />

Stilt, Red-billed Teal, Southern<br />

Pied Babblers and Egyptian Geese.<br />

When we arrived at the lake, which<br />

spanned 6 x 32 km, there was a Great<br />

White Pelican in the far corner and a<br />

Goliath Heron flying across the sky into a<br />

magnificent sunset. Almost everywhere<br />

we saw Southern Yellow-billed Hornbills<br />

and Lilac-breasted Rollers perched on<br />

tips of the trees along the road.<br />

On a morning at the Chobe Bush Lodge,<br />

I was lazing on a deck chair on the banks<br />

28 | <strong>Bokmakierie</strong> December 2016 No 247


Bushbuck<br />

of the river when a lovely shy Bushbuck<br />

came meandering past eyeing me carefully<br />

both enjoying the serenity of the<br />

place, the river gently lapping on a small<br />

beach while an egret moseyed around<br />

the river bank.<br />

An incident that thrilled us all was watching<br />

a mum elephant standing patiently<br />

in the water while a male teenager tried<br />

coaxing a baby across a shallow part<br />

of the river. This fussy little thing just<br />

would not budge, over and over again<br />

the brother used his trunk to gentle him<br />

forward. Perhaps there was a language<br />

going on there but the mum came back<br />

and allowed him to have a good suckle<br />

of milk after which he tossed his little<br />

trunk around in the water, drank some<br />

and then with another nudge from his<br />

brother, was ready to move forward. All<br />

three river boats cheered as the baby<br />

swaying his little trunk around followed<br />

mum across the shallow waters with<br />

brother behind.<br />

I picked up 13 lifers, with the grand total<br />

of 224 birds seen. All the above information<br />

was reported to us by experienced<br />

birders, while I, with binoculars in hand,<br />

pen and paper in the other furiously<br />

made notes.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 29


Mass Bird Fatality in Vanderbijlpark,<br />

Gauteng<br />

Dane Paijmans, SAFRING - safring@adu.org.za<br />

THE<br />

SOUTH<br />

AFRICAN<br />

BIRD<br />

RINGING<br />

UNIT<br />

With the heavy storms occurring<br />

throughout South Africa, we have received<br />

some interesting ring recoveries<br />

and resightings from the public. Some<br />

have been more disturbing than others,<br />

and one such report came from Citizen<br />

Scientist, Gert Voges, from Vanderbijlpark,<br />

Gauteng. After a particularly heavy<br />

rainstorm on November 12, 2016 we<br />

received the recovery of a Red-headed<br />

Finch (ring number: FB09672; see<br />

http://safring.adu.org.za/ring_info.<br />

php?ring=FB09672). What was disturbing<br />

about this recovery was not only<br />

the mysterious cause of this individual’s<br />

death, but also the fact that another 45<br />

birds were found dead in the same yard<br />

(35 Red-headed Finches, 5 Laughing<br />

Doves, 2 Cape Turtle Doves, 1 Karoo<br />

Thrush, 1 Crested Barbet and 1 Speckled<br />

Pigeon). Some of the birds can be seen<br />

in the photo, but a cause could not be<br />

confirmed as the Dachshunds of the<br />

reporters discovered the bodies first.<br />

From the details given the deaths do<br />

appear to be storm-related. The birds<br />

30 | <strong>Bokmakierie</strong> December 2016 No 247<br />

were scattered throughout the yard,<br />

with additional birds being found in a<br />

neighbour’s yard. They were all in close<br />

proximity to a large cork tree that had<br />

being used by many species for nesting.<br />

Although Gert noted no hail had fallen<br />

that night and lightning hadn’t struck<br />

the tree, there had been very strong<br />

winds (which damaged many trees in the<br />

neighbourhood) and a short but heavy<br />

downpour. This wind and rain may have<br />

caused the deaths and if hail had fallen<br />

while the birds were sheltering in the tree<br />

they may have been killed on impact by<br />

larger stones. Similar mass deaths are<br />

documented where flocks of birds are<br />

drawn up into the atmosphere by strong<br />

winds and as a result of exhaustion and<br />

turbulence may die. The focus of these<br />

bodies around the tree and the mix of<br />

species imply something more directed<br />

was likely the cause. As all these species<br />

are seed eaters there is also the possibility<br />

of poisoning, but as the storm had<br />

just occurred, it would be too much of a<br />

coincidence.<br />

Many mass bird death reports are documented<br />

throughout the world. These<br />

reports range from tens, to thousands of<br />

bodies being discovered, with numerous<br />

causes (such as starvation, disease,<br />

weather, toxins, collisions and in some<br />

cases no cause can be identified). Within<br />

our database, only a few records can be<br />

found as SAFRING reports focus on the<br />

ringed individual and usually ignore other<br />

birds found at the scene.


One such report involved 200 dead<br />

Common Terns (Sterna hirundo) at the<br />

mouth of Kleinriviersvlei, Hermanus,<br />

Western Cape in 2016. Only 6 of the birds<br />

were ringed and no confirmed cause<br />

was found, although it is believed that<br />

something made the birds so sick (possibly<br />

Red Tide) that they were all unable<br />

to flee a predator/s that later killed them.<br />

A similar report was made where 40 to<br />

50 Cape Gannets washed up along the<br />

same beach in 2013 with one ringed<br />

individual (ring: 9A61969). Similar reports<br />

are most welcome (even where ringed<br />

birds are not present) as we will direct<br />

the queries to conservation groups in<br />

the area, that are sure to be interested in<br />

identifying the causes.<br />

We at SAFRING really appreciate all the<br />

effort of ringers and the general public<br />

(the latter in reporting recoveries) and<br />

would like to thank everyone that has<br />

taken part in ringing and resighting in<br />

Southern Africa. If you have any unreported<br />

resightings/recoveries please<br />

contact us at SAFRING with the details.<br />

Mass bird fatality - Photo by Gert Voges<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 31


Cruising on the Queen Mary 2<br />

Text & photos by Anthony Cavanagh<br />

Launched in 2004, the Queen Mary 2 is the<br />

flagship of the Cunard Line, which has a<br />

proud maritime history dating back over a<br />

hundred years. The ship was named Queen<br />

Mary 2 (QM2) by Queen Elizabeth II and<br />

named after the 1936 namesake ship Queen<br />

Mary, which in turn was named after Mary of<br />

Teck the consort of King George V.<br />

Estate, now living in Singapore, and who had<br />

very kindly offered to show us some of the<br />

local sights. Nadine duly arrived at our hotel<br />

and guided us around this fascinating and<br />

very cosmopolitan city showing us Little<br />

India, Chinatown and Arab Street areas as<br />

well as the bustling and very modern waterfront,<br />

popular with the young set with<br />

Entrance to the Lobby of QM2<br />

In April Sue and I flew to Singapore where<br />

we were due to board the QM2 for the<br />

Singapore to Dubai leg of its 2016 world<br />

voyage. Having a free day in Singapore prior<br />

to boarding, we had made arrangements<br />

to meet up with Nadine Benger, a former<br />

member of Sue’s walking group on the<br />

its many bars and restaurants. We travelled<br />

around on the buses, which are so similar to<br />

the London buses, and also on the extremely<br />

clean and very efficient air-conditioned<br />

underground rail system.<br />

32 | <strong>Bokmakierie</strong> December 2016 No 247


Since leaving the Malayan<br />

Federation in 1965 Singapore<br />

has grown exponentially into<br />

an Asian economic tiger,<br />

which is reflected in the<br />

modern tall buildings, the<br />

rapid transit system as well<br />

as the busy harbour and<br />

Sentosa Island, a popular<br />

tourist spot connected to<br />

the main island by cable car.<br />

Singapore is a fine place to<br />

visit and many a tee-shirt<br />

has this slogan along with<br />

“fine” examples including<br />

jaywalking, spitting, chewing<br />

gum, littering and smoking<br />

in public. Consequently, the<br />

city is very orderly, very tidy<br />

and very safe. Nadine and<br />

Sean graciously invited us<br />

to dinner at their apartment<br />

where we spent a good few<br />

hours while sampling the<br />

local beers and partaking of<br />

a number of good wines.<br />

Britannia Restaurant<br />

The next day we took a taxi<br />

from our hotel to the cruise<br />

centre where we had our first<br />

sighting of the QM2 moored<br />

in the harbour. At the time of<br />

construction, the QM2 was<br />

the longest passenger ship<br />

ever built and with a gross Poling along the Kerala backwaters<br />

tonnage of 150,000 also the<br />

largest. After the customs formalities were completed we joined some 1300 other new passengers<br />

and boarded the vessel and were escorted to our stateroom (cabin on most other<br />

ships), which was on the starboard side of deck six. Our stateroom was spacious and very<br />

comfortable with furniture and fittings in keeping with the overall elegance of the ship and<br />

the private balcony was perfect for having a sundowner and watching the ocean drift by. After<br />

perusing the handy fold up layout of the ship, we decided to look around and see some<br />

of the facilities on board which included fifteen restaurants and bars, five swimming pools, a<br />

casino, ballroom, theatre and the first planetarium at sea. We then dressed for dinner, which<br />

was informal that evening meaning that, although for gentlemen jackets were obligatory,<br />

ties were optional while ladies could wear a cocktail dress or stylish separates. The Britannia<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 33


estaurant, the main dining room was in the<br />

centre of the ship on decks two and three<br />

and stretched from the port side to the starboard<br />

side of the vessel giving commanding<br />

all round sea views. At our designated table<br />

we met our dining companions, two couples<br />

from England one of which had boarded at<br />

Bangkok and the other at Singapore.<br />

The three-course dinners were superb<br />

although wines (not included in the tariff)<br />

tended to be expensive for South Africans<br />

with the least expensive wine being USD30<br />

per bottle, and the average price being<br />

around USD60 per bottle.<br />

After leaving Singapore the QM2 sailed to<br />

Port Kelang in Malaysia, which is the port<br />

serving the capital city Kuala Lumpur 41<br />

km inland. We had booked a tour of Kuala<br />

Lumpur and boarded one of the numerous<br />

coaches parked at the quayside. Our very<br />

informative tour guide gave us a history of<br />

Malaysia as we drove through to the city<br />

centre, stopping at the Merdeka Square<br />

where, on 31 August 1957, the Union Flag<br />

was lowered and the Malaysian flag was<br />

raised. The surrounding buildings in this area<br />

are fine examples of Edwardian architecture<br />

and the elite Selangor Club, in replica<br />

Tudor style cladding, was in colonial times<br />

a venue for cricket and rugby matches. The<br />

highlight of our tour around Kuala Lumpur<br />

was our visit to the Petronas Towers, one<br />

of the world’s tallest buildings. Our guide<br />

informed us that the Koreans built one tower<br />

and the Japanese built the other- with the<br />

Korean tower being completed just three<br />

days before the Japanese built tower was<br />

completed. We took a lift to the observation<br />

deck on the 86th floor and looked down<br />

over the many high-rise buildings in this<br />

very modern city.<br />

34 | <strong>Bokmakierie</strong> December 2016 No 247


The QM2 sailed overnight<br />

to Langkawi, an island in the<br />

northern part of Malaysia<br />

and the country’s leading<br />

holiday destination. Sue and<br />

I had chosen to see some of<br />

the island’s wildlife and while<br />

waiting for the motor launch<br />

to take us up river, we noted<br />

mudskippers on the mud<br />

flats and Scaly-breasted Munias<br />

in the surrounding trees.<br />

The launch took us to the<br />

Kilim Geoforest Park where<br />

our first stop was to see the Brahminy Kite, Langkawi<br />

local bat species in a<br />

series of caves. The mangrove forests in the vicinity of<br />

the caves are home to Long-tailed Macaques and a<br />

number of these inquisitive primates approached close<br />

to the tourists, allowing some memorable photos to be<br />

taken. Our launch then took us further up the river to<br />

an area where Brahminy Kites by the dozen swooped<br />

low over the river accompanied by the occasional<br />

White-bellied Sea Eagle. Our final destination was to a<br />

fish farm situated close to the mouth of the river where<br />

we were shown some of the local fish species.<br />

The QM2 set sail later that evening and headed across<br />

the Bay of Bengal, the largest bay in the world our captain<br />

advised us in his daily midday communiqué.<br />

The next two days were sea<br />

days and dinner on the first<br />

of these was our first formal<br />

dinner evening where gents<br />

were expected to wear a<br />

dinner jacket, tuxedo or dark<br />

suit with tie and ladies wore<br />

evening or cocktail dress. It<br />

was also the evening when<br />

the captain welcomed<br />

guests who had boarded at<br />

Singapore. At this function,<br />

the captain introduced key<br />

members of his crew and<br />

also gave some statistics of<br />

the nationalities of the 2000 Re-boarding at Cochin, India<br />

Long-tailed Macaque, Langkawi<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 35


ird sightings included White Pelican and<br />

Black-hooded Oriole, as well as the very<br />

familiar House Crow, House Sparrow and<br />

Common Myna.<br />

HMS Defender<br />

passengers on board. Over half were British,<br />

with South Africans well represented at 190.<br />

Over 300 passengers were participating in<br />

the 120 day round the world voyage from<br />

and back to Southampton, and this particular<br />

day was the 81st day of the QM2’s<br />

circumnavigation of the globe.<br />

Each evening there was a show at the<br />

theatre, with the ship’s resident band supporting<br />

singers and dancers, while other<br />

acts included comedians, magicians and<br />

jugglers. A daily events programme was left<br />

in one’s stateroom each evening advising<br />

passengers of the following day’s events<br />

as well as time changes, the ship’s position,<br />

and the operating times of the many pubs<br />

and restaurants. We watched “Passport to<br />

the Universe” narrated by Tom Hanks at the<br />

planetarium where the seats recline so that<br />

one can watch the display projected onto<br />

the hemisphere shaped screen directly<br />

above the seats. Sue made regular use of<br />

the gym while I was happy to jog a few laps<br />

of the open 7th deck where each lap was<br />

approx 600mtr. The ship’s well-stocked<br />

library was at the bow of the ship on deck 8<br />

and gave readers and browsers a panoramic<br />

view of the clear blue ocean ahead. There<br />

were also daily lectures in the auditorium<br />

given by experts in their field.<br />

Colombo in Sri Lanka was hot and humid as<br />

expected and after a short bus tour of the<br />

city we headed back to the ship. Interesting<br />

After another day at sea, the QM2 arrived at<br />

the port of Cochin in the state of Kerala in<br />

southwestern India. On the quayside there<br />

were a number of local tour operators and<br />

we joined two other S.A. couples and an<br />

Australian couple on a tour of the backwaters<br />

of Kerala. Travelling by car in India is not<br />

for the fainthearted and our driver overtook<br />

tuk-tuks and other slow moving vehicles<br />

in the face of oncoming traffic which we<br />

missed by a hairsbreadth every time. After<br />

an hour we reached the river where we<br />

boarded a local punt that had obviously<br />

seen much service and sat in cane chairs<br />

with a wickerwork cover overhead, offering<br />

some protection from the hot sun.<br />

Two rather elderly local gentlemen poled<br />

the craft slowly along the still waterways<br />

that had dense tropical vegetation on either<br />

side. People living on the banks of the waterways<br />

looked desperately poor and their<br />

livestock were not in the best condition. Bird<br />

life was quite varied and we saw Blue-tailed<br />

Bee-eater, Indian Cormorant, Indian Pond<br />

Heron, White-throated Kingfisher, Racket-tailed<br />

Drongo and Brahminy Kite among<br />

others. We stopped at one of the villages<br />

where coir making was the main activity and<br />

also sampled some rather spicy homemade<br />

vegetable crisps that were delicious and we<br />

all bought a few packets each. What really<br />

impressed us was that these people lived in<br />

very modest houses and didn’t have many<br />

possessions, but they always had a smile<br />

and seemed content with their lives.<br />

Back on board the next day, the captain<br />

announced at his midday communiqué that<br />

we were now sailing across the Arabian Sea,<br />

which was a known pirate operating area.<br />

Consequently, there was to be a drill later<br />

36 | <strong>Bokmakierie</strong> December 2016 No 247


given a warm round of applause by the<br />

passengers. Breakfast, lunch and dinner<br />

throughout the voyage were superb and<br />

the crew went the extra mile to oblige the<br />

passengers. We exchanged email addresses<br />

with our dining companions all of whom<br />

were disembarking in Dubai and said our<br />

farewells.<br />

The amazing twisted building, Dubai marina<br />

that day where, when the alarm sounded,<br />

all passengers had to stand outside their<br />

staterooms until the all clear was sounded.<br />

Also, the open 7th deck (the running track)<br />

was to be closed off from 6pm to 6am. The<br />

ship’s speed was increased to 18 knots as<br />

pirates had great difficulty boarding a fast<br />

moving ship. We also noticed later that<br />

water cannons were set up on deck 7 to<br />

repel any would-be pirates. On our second<br />

day sailing through the Arabian Sea, we had<br />

a visit from a Royal Navy destroyer, HMS<br />

Defender, which came very close and gave<br />

us a display of its speed circling round the<br />

QM2 with ease. The helicopter took off from<br />

the deck of the destroyer and flew off a few<br />

miles before landing effortlessly back on the<br />

landing pad.<br />

Alas, the end of our cruise approached and<br />

at our final dinner all the chefs paraded<br />

through the Britannia restaurant and were<br />

We left the QM2 the next morning with just<br />

a tinge of sadness and, as our taxi drove out<br />

of the harbour area, we looked back fondly<br />

at this magnificent ship on which we had<br />

spent the past eleven days. We then had<br />

two full days in Dubai and visited the old<br />

city by the creek, the very modern marina,<br />

the Dubai Mall with its ice rink and aquarium<br />

tunnel, the Atlantis complex on Palm Island,<br />

and also the flamingos at the Ras-al-Koor<br />

bird hide.<br />

Cruising on the Queen Mary 2 was a<br />

wonderful experience. We met lots of<br />

interesting people from all over the world,<br />

visited some exotic places, experienced<br />

different cultures, enjoyed fine dining, and<br />

all from the comfort and elegance of one of<br />

the finest vessels that ever sailed the seven<br />

seas.<br />

Dubai marina<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 37


Two Septuagenarian Twitchers<br />

Text & photos by Jim McLuskie<br />

September 2016. I have just finished a birding<br />

trip with my friend of more than 40 years<br />

and birding buddy, Laurence Fenn. The area<br />

we went to was a roughly triangular area<br />

from Upington in the western central, to Port<br />

Nolloth in the northwest and Calvinia in the<br />

south. We had seven target species in mind;<br />

some were lifers for Laurence and some for<br />

me.<br />

We left Jo’burg at 0600 on a Monday and<br />

completed the 1000 km journey through<br />

Upington to Pofadder (Afrikaans for puffadder,<br />

a very venomous snake), we made<br />

good progress, stopping only when we saw<br />

a Temminck’s Courser and for a sandwich.<br />

Arrived at 1700, very content, only to be told<br />

by a fellow parker that our back left tyre was<br />

flat! Laurence took off for the garage where<br />

the tyre repair part was already closed. However,<br />

the owner arrived at that moment and<br />

reopened the repair shop.<br />

We left early next morning in good shape,<br />

heading north for the Orange River at Onseepkans.<br />

Our target birds were Red Lark<br />

and Sclater’s Lark. We saw neither but lots<br />

of other nice birds. We retreated to Pofadder<br />

and struck out southwest towards the red<br />

dunes at Koa, the best place in the world to<br />

see Red Larks. Unfortunately, the Red Larks<br />

had not read the same book! So we reached<br />

Springbok, late, tired and larkless. We stayed<br />

3 nights on a very comfortable guest farm.<br />

Wednesday morning, after a great breakfast,<br />

we started down through the hills towards<br />

Port Nolloth, the targets being Karoo Lark<br />

and Barlow’s Lark. The guide says: start<br />

looking 5 km from the port, at the start of<br />

the coastal plain. So we did and it was not<br />

long before we saw several Karoo Larks. One<br />

down and six to go. We then moved to an<br />

Barlow’s Lark<br />

area just north of Port Nolloth, adjacent to<br />

the sea. It was an area where I had previously<br />

seen Barlow’s Lark. After several hours of<br />

traipsing up and down, we were on a track<br />

back to exit the area when we saw one! It<br />

was a great view and I even got some photos<br />

(not National Geographic standard but recognisable<br />

at least). After fish and chips in the<br />

port and a look at the De Beers ship facilities<br />

there, we returned in leisurely fashion to<br />

Springbok. Two down and five to go!<br />

The guest farm was very comfortable and<br />

did an excellent breakfast, so the next day<br />

we were early at the entrance to a local<br />

reserve (Goegap) that is well known for its<br />

wildflowers. Though the season had passed<br />

a week earlier, there were still some lovely<br />

examples to be seen: gold, yellow, purple,<br />

white and red clumps. After a briefing by an<br />

enthusiastic reserve manager, we set off on<br />

a 4x4 trail. At each good area indicated, dry<br />

river bed with reeds, we hunted the elusive<br />

Karoo Eremomela. I used my phone birding<br />

app calls with a blue tooth loudspeaker and<br />

we walked and called, listened and walked,<br />

walked and called and listened again! At site<br />

number 4, I was walking along the high bank<br />

of a dry ravine calling and listening.<br />

38 | <strong>Bokmakierie</strong> December 2016 No 247


Rock Kestrel<br />

I was standing still listening when, suddenly,<br />

a small bird came and landed on a bush<br />

only two metres in front of me! I called to<br />

Laurence and he came to see his first Karoo<br />

Eremomela. We then watched the female arrive<br />

and the male proceeded to move around<br />

his territory singing at the corner points from<br />

atop a bush. It was a wonderful sight and a<br />

great experience.<br />

Friday morning saw us leave the guest house<br />

for Calvinia, via the desert route away from<br />

the tarred roads. We headed straight for<br />

Aardvark Kloof (antbear ravine) where the<br />

Cinnamon- breasted Warbler was supposed<br />

to be. Its preferred habitat is boulder strewn<br />

hillslopes with sparse vegetation. So we<br />

parked and commenced walking with me<br />

playing the calls intermittently. After about<br />

2 hours we had heard no response when<br />

a small dark bird flew in front of us and<br />

disappeared among some large boulders. It<br />

made no sound. After waiting a while I heard<br />

a high-pitched slow whistle. I had not heard<br />

that call before and although not part of the<br />

call I had been playing, it was reminiscent of<br />

it. Some minutes later I heard the same call<br />

high up to my left on top of a cliff. I called<br />

to Laurence to come and tell what bird is it,<br />

hoping it was the one. He arrived, said yes,<br />

and despatched me for my telescope. The<br />

scope, when set up showed the little warbler<br />

in all its glory, singing its heart out from the<br />

top of a 50-metre cliff!<br />

The day ended with a second puncture but<br />

even that could not detract from the 4 down,<br />

3 to go!<br />

Saturday was a hard day. We spent hours<br />

combing the veld on the way to and around<br />

Brandvlei, some 150 km north of Calvinia.<br />

Lots of walking and calling but no luck with<br />

two main targets: Sclater’s Lark and Red<br />

Lark. On Sunday we left before sun-up and<br />

without breakfast to bird the same area<br />

earlier as on Saturday At 11h00 we had our<br />

third puncture! Having changed wheels we<br />

returned to Brandvlei to get the tyre fixed.<br />

Lo-and-behold, on the way back we had<br />

a great view of a Red Lark. The day ended<br />

without the tyre being fixed [on a Sunday?]<br />

but 5 down and 2 to go!<br />

The guest house we stayed was very<br />

comfortable and great value for money. On<br />

Monday we left as soon as the tyre was fixed,<br />

at about 8 o-clock. Since we had birded the<br />

area around Brandvlei and between there<br />

and Calvinia, we quickly went until we were<br />

north of Brandvlei, on the way to Kenhardt. At<br />

every farm wind pump that was working and<br />

had water, we stopped but no luck.<br />

Eventually, we turned east off the tarred road<br />

a bit south of Kenhardt. Same story: stop at<br />

likely habitat, call, and watch. After about 20<br />

Sociable Weaver’s nest<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 39


km of this, it was 11h00 and we resolved to<br />

turn back at 11h30. At 11h15 we spotted another<br />

little bird on the fence top, white outer<br />

tail, streaked breast, upside-down bill. It flew<br />

nearer to us and perched so that Laurence<br />

could see the “teardrop”; Sclater’s lark at<br />

last! We watched its mate arrive and the two<br />

began to feed on a bit of stony plain. I went to<br />

look for a nest but no luck. Still, 6 out of 7 on<br />

our last day!<br />

The missing species, Black-eared Sparrow-lark,<br />

is the easiest of all to identify so it<br />

will keep for another day. We had done the<br />

difficult ones, including 4 lark species so we<br />

were well pleased with our trip and arrived<br />

back in Johannesburg on Tuesday afternoon,<br />

tired but content<br />

Common Swifts Fly<br />

For 10 Months Without A Break<br />

A new study has confirmed that Common<br />

Swifts can spend up to 10 months in the air<br />

without landing.<br />

The research, published in Current Biology,<br />

involved attaching tiny geolocators to swifts<br />

in southern Sweden. The tiny logging devices,<br />

weighing just a matter of grams, are part<br />

of a revolution in miniature electronics that<br />

are enabling scientists to track smaller and<br />

smaller birds.<br />

The loggers include an accelerometer, to record<br />

movement, and a light sensor. Given the<br />

duration of the day and night and the time<br />

of year, scientists can determine the north/<br />

south position. Noting when the sun is at the<br />

midday position gives an east/west location.<br />

In 2014 and 2015, the team recaptured 19<br />

swifts carrying these data loggers and found<br />

that, as expected, the birds were spending<br />

their winters in West Africa.<br />

Dr Anders Hedenström, a biologist at the<br />

University of Lund, and his team reported<br />

that three of the 19 birds never rested. Some<br />

did rest occasionally at night for brief periods,<br />

but the data loggers showed that all the birds<br />

stayed in the air for over 99 per cent of the<br />

time when they weren’t nesting.<br />

The data confirms what has long been predicted<br />

— that the birds stayed aloft when not<br />

nesting. It also endorses the use of geolocators<br />

as an invaluable tool for monitoring birds’<br />

movements — to put it into context, around<br />

50,000 Common Swifts have been ringed in<br />

Sweden over the past century, but only one<br />

ringed individual had ever been recovered<br />

south of the Sahara.<br />

The recordings also showed that long ascents<br />

by swifts, observed during the summer,<br />

happen throughout the year. During these<br />

ascents, often at twilight, the birds climb up<br />

to almost three kilometres in altitude.<br />

Dr Hedenström speculated that the birds<br />

may ascend to such heights to sleep safely.<br />

How birds cope with the need to sleep<br />

remains a mystery. A recent study showed<br />

that frigatebirds can sleep on the wing, albeit<br />

for much shorter periods than they do when<br />

on land. Currently the recording devices that<br />

observe brain activity weigh too much to fit to<br />

swifts, but this may well change in the future.<br />

40 | <strong>Bokmakierie</strong> December 2016 No 247


The new study confirms the suspicions that Common Swifts can spend up to 10 months in the air<br />

without landing (Photo: Mike Trew)<br />

“I can get by on just 2 hours of sleep every day, as long as I nap for 14 hours.”<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 41


Birds’ Beaks Act As Air Conditioners<br />

Birds’ beaks come in an incredible range of<br />

shapes and sizes, adapted for survival in environments<br />

around the world. But, as a new<br />

study from The Auk: Ornithological Advances<br />

reveals, there’s even more to bird beaks than<br />

meets the eye — the insides of birds’ bills are<br />

filled with complex structures that help them<br />

meet the demands of hot climates.<br />

Nasal conchae are complex structures inside<br />

bird bills that moderate the temperature of<br />

air being inhaled and reclaim water from<br />

air being exhaled. Raymond Danner of the<br />

University of North Carolina Wilmington<br />

and his colleagues from Cornell University<br />

and the National Museum of Natural History<br />

used computed tomography (CT) scans to<br />

examine the conchae of two Song Sparrow<br />

subspecies — one that lives in warm, dry<br />

sand dunes and one that lives in moister habitats<br />

further inland.<br />

In this first comparison of conchae structure<br />

from birds living along a moisture gradient,<br />

the conchae of the dune-dwelling sparrows<br />

had a larger surface area and were situated<br />

farther out in the bill than those of their inland<br />

relatives, hypothetically increasing their<br />

beaks’ ability to cool air and recapture water.<br />

Danner and his colleagues used Song<br />

Sparrow specimens that were collected in<br />

Delaware and the District of Columbia and<br />

preserved in ethanol and iodine to help soft<br />

tissues show up in scans. The contrast-enhanced<br />

CT scans they used to visualize the<br />

insides of the sparrows’ bills is a relatively<br />

new technique that is letting researchers see<br />

the details of these soft, cartilaginous structures<br />

for the first time.<br />

“We had been studying the function of the<br />

bird bill as a heat radiator, with a focus on<br />

heat loss from the external surface and<br />

adaptation to local climates, when we began<br />

to wonder about the thermoregulatory processes<br />

that occur within the bill,” says Danner.<br />

“I remember the entire team assembled<br />

for the first time, huddled around a computer<br />

and looking in amazement at the first scans.<br />

The high resolution scans revealed many<br />

structures that we as experienced ornithologists<br />

had never seen or even imagined, and<br />

we were immediately struck by the beauty of<br />

the ornately structured anterior conchae and<br />

the neatly scrolled middle conchae.”<br />

“This study highlights the remarkable complexity<br />

of the rostral conchae in songbirds.<br />

This complexity has gone largely unnoticed<br />

due to the ways in which most birds are<br />

collected and preserved,” according to Jason<br />

Bourke, a researcher from the North Carolina<br />

Museum of Natural Sciences who was not<br />

involved in the research. “Thanks to the use<br />

of innovative techniques like diceCT, we are<br />

now able to really appreciate just how complicated<br />

bird noses are.<br />

3D rendering of the CT scans, showing internal<br />

structure of Song Sparrow’s beak<br />

(Photo: E Gulson-Castillo & E Sibbald).<br />

42 | <strong>Bokmakierie</strong> December 2016 No 247


Rarities and Unusual Sightings<br />

Report: 15 November 2016<br />

Compiled by André Marx<br />

This period covers the onset of spring<br />

and early summer, the peak time for<br />

migrant arrivals. The usual haunts for<br />

waders such as Mkhombo Dam did<br />

not disappoint and several interesting<br />

records surfaced, with Roodeplaat Dam<br />

producing a few good birds as well. Bartailed<br />

Godwit is a notable and uncommon<br />

bird seen this year on passage to<br />

its wintering grounds on the coast. Two<br />

species that never feature in this report<br />

appear here for the first time; namely<br />

African Crowned Eagle and Bat Hawk,<br />

the latter a remarkable record from<br />

Delta Park in Johannesburg by Geoff<br />

Lockwood. Is this just a vagrant record<br />

as seems likely or could this species be<br />

colonising the province as the African<br />

Goshawk appears to be doing? Time will<br />

tell, and it is only through the continued<br />

efforts of keen-eyed local birders that we<br />

will know the answers.<br />

National Rarities/Nasionalerariteite<br />

Sandpiper, Green/Ruiter, Witgat-<br />

One bird was once again located at Rietvlei<br />

NR near Pretoria on 7 Oct 2016 (RW)<br />

and was still present on 20 Nov 2016.<br />

This is likely to be the same returning<br />

individual that has been seen the past<br />

few seasons.<br />

Another bird was reported from Roodeplaat<br />

Dam, 22 Oct 2016 (BdT).<br />

One bird was seen along the Jukskei<br />

River in Waterfall Estate in Midrand, 12<br />

Nov 2016 (RS).<br />

Regional Rarities/Streeksrariteite<br />

Eagle, Crowned/Arend, Kroon-<br />

A single bird was photographed in the<br />

Wilge River valley in north-eastern<br />

Gauteng, a very unusual record for the<br />

province, 20 Aug 2016 (MJ). An excellent<br />

record of a species that has not been<br />

recorded with certainty in the region.<br />

Crowned Eagle - photo by Michael Johnson<br />

Godwit, Bar-tailed. Griet, Bandstert-<br />

Two birds were at Mkhombo Dam on 2<br />

Oct 2016, a very uncommon bird for the<br />

region (LJ).<br />

Two more birds were reported from the<br />

northern end of the Blesbokspruit at<br />

Marievale, 14 Oct 2016 (SM & RC), and<br />

at least one bird was still present 25 Oct<br />

2016.<br />

These are likely to be birds stopping over<br />

while passing on their way south to their<br />

coastal wintering grounds.<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 43


Goshawk, African/Sperwer, Afrikaanse<br />

One bird was seen displaying over Fairland,<br />

Johannesburg, again on 5 Aug 2016<br />

(LR), with a further record in this area on<br />

25 Oct 2016 (LR).<br />

Another bird was seen at Delta Park,<br />

Johannesburg on 2 Sep 2016 (AR).<br />

This is still a very rare species in Gauteng<br />

and any records should be carefully<br />

documented and reported.<br />

Hawk, Bat. Valk/Vlermuis-<br />

One bird seen flying over Delta Park, Johannesburg<br />

was a surprise sighting on 13<br />

Sep 2016 (GL), and in the weeks following<br />

what was presumably the same bird<br />

was seen on two more occasions. This is<br />

not a species that has been confirmed as<br />

occurring in Gauteng with any certainty<br />

and so this represents a very important<br />

record.<br />

Openbill, African/Ooievaar, Oopbek-<br />

A single bird was at Mkhombo Dam, 19<br />

Nov 2016 (LvD).<br />

Plover, Caspian/Strandkiewiet, Asiatiese<br />

One bird was at Mkhombo Dam, 10 Oct<br />

2016 (CvW & MJ).<br />

Pratincole, Collared/Sprinkaanvoël,<br />

Rooivlerk-<br />

A solitary bird was observed at Mkhombo<br />

Dam, 16 Oct 2016 (IW).<br />

Sanderling/Strandloper, Drietoon-<br />

One bird was seen at Mkhombo Dam, 17<br />

Nov 2016 (MJ).<br />

Skimmer, African/Waterploeër<br />

A single bird was present at Vaalkop<br />

Dam, 1 Nov 2016 (SvdW). This is an uncommon<br />

vagrant, with birds turning up<br />

occasionally at large dams in the region.<br />

Vulture, Palm-nut/Aasvoël, Wit-<br />

An immature bird was observed at Vul-<br />

Pro, Hartbeespoort, on 18 Nov 2016 (KW).<br />

This is probably the same individual seen<br />

there a few months ago.<br />

Whimbrel, Common/Wulp, Klein-<br />

One bird was at Roodeplaat Dam NR, 14<br />

Oct 2016 (CvW, MJ).<br />

At least one bird was at Mkhombo Dam,<br />

16 Oct 2016 (IW)<br />

Common Whimbrel - photo by Michael<br />

Johnson<br />

Other Interesting Observations/Ander<br />

Interessants Waarnemings<br />

Eagle, Ayres’ Hawk. Arend, Kleinjag-<br />

One bird was observed in a garden in<br />

Rustenburg where it caught and consumed<br />

a racing pigeon, 17 Sep 2106 (GF).<br />

Greenbul, Yellow-bellied. Willie, Geel-<br />

bors-<br />

A sighting of one bird in a garden in<br />

Wonderboom in Pretoria in pentad<br />

44 | <strong>Bokmakierie</strong> December 2016 No 247


2540_2810 on 20 Aug 2016; the record<br />

was also confirmed with an audio recording<br />

(MB). This is a very interesting find as<br />

this is not a species known from suburban<br />

gardens in the city.<br />

Ibis, Southern Bald/Ibis, Kalkoen-<br />

An interesting sighting for the Johannesburg<br />

area was the occurrence of one bird<br />

at Northern Farm on 27 Aug 2016 (J&CH).<br />

This is a new record for the immediate<br />

area and somewhat out of range for this<br />

species.<br />

Turnstone, Ruddy/Steenloper<br />

One bird was located at Roodeplaat Dam<br />

NR in pentad 2535_2820, 9 Oct 2016 (PV).<br />

A single bird was at Mkhombo Dam on<br />

16 Oct 2016 (IW), with more individuals<br />

reported in the following weeks at this<br />

locality.<br />

Ruddy Turnstone - photo by Duane Fischer<br />

Observers/ Waarnemers:<br />

Southern Bald Ibis - photo by Duane Fischer<br />

Owl, Southern White-faced/Uil, Witwang-<br />

One bird was found at the Sandton Field<br />

and Study Centre on 3 Sep 2016, at the<br />

same locality that it was seen at last year.<br />

(KT). Several birders reported this bird at<br />

this site in the weeks following and it is<br />

possible that it is the same bird returning<br />

to the site one year later.<br />

Pelican, Pink-backed/Pelikaan, Klein-<br />

A single bird was at Roodeplaat Dam NR,<br />

14 Oct 2016 (MJ).<br />

Plover, Grey/Strandkiewiet, Grys-<br />

At least one bird was at Mkhombo Dam,<br />

22 Oct 2016 (HW).<br />

Allan Ridley (AR)<br />

Ben du Toit (BdT)<br />

BirdLife Northern Gauteng members<br />

(BLNG)<br />

Corrie van Wyk (CvW)<br />

Geoff Finney (GF)<br />

Geoff Lockwood (GL)<br />

Hennie Welman (HW)<br />

Ian White (IW)<br />

John & Celia Human (J&CH)<br />

Kerri Wolter (KW)<br />

Kevin Trinder-Smith (KT)<br />

Lance Robinson (LR)<br />

Lisl van Deventer (LvD)<br />

Luke Johnson (LJ)<br />

Marna Buys (MB)<br />

Michael Johnson (MJ)<br />

<strong>Bokmakierie</strong> December 2016 No 247 | 45


Pieter Verster (PV)<br />

Rob Crosby (RC)<br />

Rolf Wiesler (RW)<br />

Ron Searle (RS)<br />

Sarel van der Westhuizen (SvdW)<br />

Stan Madden (SM)<br />

This column is mainly concerned with<br />

observations of rarities and interesting<br />

sightings made in the Greater Gauteng<br />

region, defined as being 100km from<br />

the centre of both Johannesburg and<br />

Pretoria, however, observations made<br />

further afield are also welcome. While<br />

the majority of records are included it is<br />

sometimes necessary to exclude some<br />

depending on whether the subject<br />

matter has already been well reported.<br />

Occasionally records are sourced from<br />

the Internet and from SABAP2 records.<br />

Members are invited to submit details<br />

of sightings to André Marx at e-mail:<br />

turaco@telkomsa.net or 083 4117674.<br />

Year-end braai at Delta Park<br />

Nearly fifty members of the Witwatersrand Bird Club enjoyed the year-end<br />

braai at Delta Park on Sunday 4th December. This annual social event was<br />

well attended by both East and West Rand Satellite members<br />

- photo by Lia Steen<br />

46 | <strong>Bokmakierie</strong> December 2016 No 247


2016 Calendar Competition Entries<br />

Lappet-faced Vulture - photos by Mike Fullerton<br />

Spotted Eagle-owl - photos by Peter Chivers<br />

African Swamphen and juvenile - photos by<br />

Dave Bentley<br />

Pied Kingfisher - photos by Anton Schultz<br />

Southern Red-billed Hornbill - photos by Bev<br />

Carstens<br />

Black-winged Stilt - photos by Elise Bailie

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