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May 1st 2008

Time is running out for Asian vultures...

A new study has revealed that the vultures of Asia are declining faster than any bird in history. It warns that without urgent action, these scavenging birds will be extinct within just ten years.

These devastating declines have been largely caused by the use of the drug diclofenac, an anti-inflammatory drug for livestock. Vultures that feed on livestock carcasses treated with diclofenac experience kidney failure within just a few days, and with so many vultures gathering to feed on one animal, a single cow carcass can kill a large flock.

The full extent of the decline of vulture species is already being felt by humans, as rotting carcasses remain untouched, posing a health hazard, as well as encouraging feral dog populations which carry rabies.

The manufacture of veterinary diclofenac was banned in 2006, but with the human form of the drug still widely available and used to treat livestock, vulture numbers have continued to fall. The scientists who undertook the study urge that a ban on the sale of diclofenac is vital for survival of three Critically Endangered vulture species...


Asian white-backed vulture

image: Asian white-backed vultures with wings out-stretched on ground

Asian white-backed vultures are voracious feeders; a flock of different vulture species has been reported to eat a fresh bullock carcass in just 40 minutes. This species has experienced catastrophic declines, with population numbers dropping by 99.9 percent since 1992.


Indian vulture

image: Indian vulture landing at kill site

A scruffy-looking scavenger, the Indian vulture constructs enormous nests, measuring two to three feet across. Together with the slender-billed vulture, numbers have fallen by a shocking 97 percent since 1992.


Slender-billed vulture

image: Slender-billed vulture feeding on carcass

The slender-billed vulture is not only being pushed towards extinction by human’s continued use of diclofenac, but in some areas is also suffering from a shortage of carcasses on which to feed, caused by a reduction in the numbers of wild animals, and human consumption of livestock that die naturally.




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