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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