Slender-billed Vulture
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[Photo] Slender-billed Vulture (Gyps tenuirostris) head. Woodcut from Fauna of British India. W T Blanford.

The Slender-billed Vulture (Gyps tenuirostris) is a recently recognized species of Old World vulture. For some time, it was lumped together with its relative the Indian Vulture under the name of "Long-billed Vulture". However, these two species have parapatric or allopatric ranges and can be immediately told apart by trained observers, even at considerable distances.

This species has suffered a marked decline in its numbers in recent years. The only breeding colony of these vultures in South-East Asia in the wild, is in the Steung Treng province of Cambodia. This colony is thought to number about 50 - 100 birds. The survival of the vultures in Cambodia may have been partly because diclofenac, which is poisonous to vultures, is not available there.

Conservation
The Slender-billed Vulture is a protected species listed on the appendix II list of CITES, because its numbers have declined rapidly. It decline is largely due to the use of the non-steroidal anti-inflammatory drug (NSAID), diclofenac, in working farm animals especially in India. Diclofenac is poisonous to Vultures causing kidney failure and is being replaced by meloxicam (another NSAID), which is not toxic to Vultures.

Captive breeding programs in India are aiming to conserve the species, and it is hoped that vultures can be released back in the wild when the environment is free of diclofenac.

http://en.wikipedia.org/wiki/Slender-billed_Vulture

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