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EAZA News 58-9 - European Association of Zoos and Aquaria

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Martin Wehrle, Goldau Zoo, Switzerl<strong>and</strong><br />

Bearded vulture EEP<br />

For twenty years now, bearded vultures have however been reintroduced<br />

into the Alps via a project supported by almost thirty zoological institutions.<br />

The Bearded vulture EEP, one <strong>of</strong> the first EEPs, was established in<br />

1986, <strong>and</strong> mainly focuses on the conservation <strong>of</strong> bearded vultures in the<br />

wild. For a long time breeding bearded vultures in captivity seemed almost<br />

impossible. One <strong>of</strong> the main problems was the difficulty in distinguishing<br />

males from females by external features, which hampered the formation<br />

<strong>of</strong> pairs. New techniques have made sex determination much easier. In<br />

January 2006, the Bearded vulture EEP counted 66.60.1 birds. That same<br />

year 19 eggs hatched, <strong>of</strong> which 16 chicks were raised successfully by their<br />

parents or foster parents. Ten chicks have been released in Austria, Italy<br />

<strong>and</strong> for the first time in Spain (Sierra de Cazorla). Since the establishment<br />

<strong>of</strong> the Bearded vulture EEP, 144 juveniles have been released into the wild.<br />

Successful rearing at Goldau Zoo<br />

Goldau Zoo in Switzerl<strong>and</strong> is also involved in the bearded vulture reintroduction<br />

project. Several zoos keep this species, but each year, only a few<br />

captive pairs breed. Goldau Zoo has been trying to breed with the species<br />

since 1995. The zoo built two additional breeding aviaries in 1998, so<br />

a total <strong>of</strong> three pairs <strong>of</strong> bearded vultures could be kept. The first egg<br />

hatched in 2000. The zoo opened a new exhibit in 2005, informing the<br />

visitors about the bearded vulture, its biology, its extinction <strong>and</strong> the<br />

reintroduction project. Last year was very successful; due to the great<br />

devotion <strong>of</strong> the zoo staff, three bearded vultures were successfully raised.<br />

The staff had to deal with several problems during the rearing period <strong>and</strong><br />

one <strong>of</strong> the <strong>of</strong>fspring was transported to the Vienna Breeding Unit to be<br />

reared by foster parents. Two <strong>of</strong> these three bearded vultures have now<br />

been released (one in Martelltal <strong>and</strong> one in Hohe Tauern) <strong>and</strong> the third<br />

one went to another breeding centre.<br />

Late February 2007, another two chicks hatched. One <strong>of</strong> the chicks died<br />

due to a goitre infection. The other chick is developing well <strong>and</strong> will be<br />

reintroduced in the Swiss National Park in June.<br />

conservation<br />

Reintroduction <strong>of</strong> the bearded vulture<br />

photo michael knollseisen<br />

For a long time the bearded vulture (Gypaetus barbatus) was hunted fiercely, due to the superstition that,<br />

besides slaughtering lambs in its wild dives, this gigantic bird would not even shy from stealing children....<br />

This lack <strong>of</strong> knowledge led to the noticeable disappearance <strong>of</strong> the bearded vultures in the Alps.<br />

Bearded vultures on the move<br />

The success <strong>of</strong> this project shows the importance <strong>of</strong> zoo cooperation <strong>and</strong><br />

support in conservation <strong>of</strong> <strong>European</strong> flagship species. As many as eight<br />

young vultures could be released at four sites in the Alps during successful<br />

project years. Since 1997, 33 <strong>of</strong>fspring have hatched in the wild <strong>and</strong> the once<br />

extinct vulture has a new <strong>and</strong> growing natural population. The project<br />

‘Bearded vulture on the move’ began in 2004. Released single young bearded<br />

vultures are marked with satellite transmitters, allowing a broad public to<br />

continuously follow each single bird on the internet. The marked birds are<br />

located with the help <strong>of</strong> satellites which circle the earth in the north-south<br />

axis at a height <strong>of</strong> 850 km. This interesting information helps to fascinate<br />

people about the bearded vulture <strong>and</strong> its alpine habitat. Futhermore, the<br />

technology provides basic data to study spatial behaviour.<br />

photo goldau zoo<br />

Testing transmitters<br />

Before the project began, the fixation <strong>of</strong> the satellite transmitters was tested<br />

on bearded vultures <strong>of</strong> Goldau Zoo. Two systems proved to be successful;<br />

the affixation <strong>of</strong> a transmitter onto a tail feather <strong>and</strong> the affixation with an<br />

elastic b<strong>and</strong> which lies around the hips (like a climber’s belt). Consequently,<br />

two vultures were released <strong>and</strong> could be monitored in 2005 <strong>and</strong> 2006.<br />

Currently, the use <strong>of</strong> satellite transmitters with GPS modules is being<br />

evaluated. This would enable more accurate location data in the future.<br />

The position <strong>of</strong> the vultures can still be observed via the internet through<br />

www.bartgeier.ch/unterwegs •<br />

eaza news <strong>58</strong><br />

2007<br />

25

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