Feather destructive behaviour - plucking, barbering, and chewing feathers - affects a significant proportion of captive parrots and reflects profound welfare problems in most cases.
Feather destructive behaviour is a distress signal from birds experiencing welfare failure. Parrots evolved for complex social environments with rich cognitive stimulation - captivity in small cages with inadequate enrichment and social contact creates chronic psychological suffering that expresses as self-directed destructive behaviour. FDB is both a symptom and cause of welfare problems, as feather damage affects thermoregulation and flight capability. Addressing FDB requires investigating and resolving underlying welfare deficits rather than applying physical prevention devices. Many parrots showing FDB are living in conditions far below their welfare needs.