The anti-inflammatory drug diclofenac, used in livestock, has caused catastrophic vulture population collapses across South Asia with major welfare consequences.
Vultures dying of diclofenac-induced gout experience severe internal pain from uric acid crystallization in organs. The scale of the die-off — hundreds of millions of birds over 15 years — represents one of the most rapid and severe wildlife welfare disasters ever documented. Recovery requires both drug use reduction and active vulture population management.