Feather destructive behaviour in captive parrots is a major welfare indicator, often reflecting unmet psychological and social needs.
Feather plucking causes physical pain from self-trauma and indicates profound psychological distress. Parrots are highly intelligent, long-lived, and social animals whose needs are very difficult to meet in captivity. A plucking parrot is communicating that its needs are not being met. The behaviour is often irreversible even when underlying causes are addressed.