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Bali starling (Leucopsar rothschildi) - One of the rarest birds
The Bali starling is a quite "new" bird species. It is known to science since 1912 when it was described by the ornithologist Erwin Stresemann, who had found it one year before during an excursion. The natural distribution range of this starling is restricted to the island of Bali, a part of Indonesia nowadays. The birds inhabit monsoon forests and acacia savannas. They reach lengths up to 25 cm and weights up to 90 g. Bali starlings feed on all sorts of insects, most of all ants, termites and caterpillars. Fruits and seeds are part of their diet too. They prefer old woodpecker holes for their nests. Males tend to be very aggressive during the breeding season. Outside of the breeding season Bali starlings previously lived in flocks consisting of up to 40 individuals. But the emphasis is on "previously" since the entire population living in the wild is less than 40 birds at the moment.
The population of the Bali starling has never been large but it has been estimated to several hundreds individuals in the not too distant past. The situation became most dramatic in 1990 when just 13 individuals were found in the wild. The decrease of the population already started shortly after the Bali starling was detected. The white plummage, the black wings and the blue area around the eyes made the birds highly attractive to the cage-bird trade. And the rarer they became the more attractive they were to certain collectors. Another reason for their decrease was man-made changes to their natural habitat raising competition of another starling species which was more able to cope with the new circumstances.
The Bali starling is protected by Indonesian law nowadays. It's distribution range is limited to the Bali Barat National Park, where the birds are guarded by armed personel. The wild population has been enlarged by birds bred in captivity but is still not larger than 32 individuals (estimated in 1999). Bali starlings are bred in zoos and bird parks. The captivity population consists of about 700 birds. But breeding only makes sense if it is possible to stabilize the population in the wild. The European breeding programme is coordinated by Cologne zoo. The in-situ-project on the island of Bali is supported by the Brehm Fonds of Walsrode bird park in northern Germany.
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This article was originally published at <a href="http://magazine.naturspot.de" target="_top">magazine.naturspot.de</a>. <a href="http://magazine.naturspot.de/text/balistarling.html" target="_top">Link to the original article</a>
The animal photos are NOT part of this permission. |
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