2012 · Current AffairsPrevious Year Question
Q100.
Vultures which used to be very common in Indian countryside some years ago are rarely seen nowadays. This is attributed to
A. The destruction of their nesting sites by new invasive species.
B. A drug used by cattle owners for treating their diseased cattle.
C. Scarcity of food available to them.
D. A widespread, persistent and fatal disease among them.
Answer

B

Explanation

The catastrophic decline of vultures in India (over 95% population crash of Gyps vultures) has been directly attributed to Diclofenac — a Non-Steroidal Anti-Inflammatory Drug (NSAID) used to treat sick cattle. When vultures feed on carcasses of cattle treated with Diclofenac, the drug causes visceral gout and kidney failure in vultures, leading to death. India banned veterinary use of Diclofenac in 2006. This is one of the fastest population declines of any bird species in history.