Vultures face catastrophic population declines from poisoning, both intentional and accidental, with devastating welfare consequences at individual and ecosystem levels.
Vulture poisoning causes mass acute suffering events - a single poisoned carcass can kill hundreds of vultures simultaneously as these gregarious feeders gather in large numbers. Poisoning from organophosphates and other toxic compounds causes neurological symptoms including trembling, seizures, and respiratory failure that may take hours to result in death. The scale of mortality in single poisoning events represents welfare catastrophe at both individual and population levels. Secondary poisoning from diclofenac causes visceral gout and renal failure - a painful, prolonged death that eliminated over 95% of Asian white-backed, long-billed, and slender-billed vulture populations within a decade. Conservation programs that provide clean, uncontaminated food sources (vulture restaurants) and remove toxic substances from the environment directly prevent mass poisoning events.