Companion birds from finches to macaws have highly specific welfare needs that are frequently misunderstood and unmet in domestic settings.
Companion bird welfare is profoundly shaped by the degree to which captive environments allow expression of species-typical behaviors. A parrot that cannot fly meaningful distances, that has no foraging challenge, that lacks social companions and interaction, and that has no meaningful cognitive engagement is experiencing a welfare deficit regardless of how large its cage is or how well it is fed. The diversity of species kept as companion birds means welfare requirements vary enormously — a budgerigar has different needs from a cockatoo, which differs again from a canary. The commonality is that all birds are wild-derived species whose behavioral repertoires evolved in complex environments, and captive provision must be designed with that evolutionary context in mind.