Kiwi are flightless, nocturnal birds facing severe pressure from introduced predators. New Zealand's intensive conservation management directly affects individual kiwi welfare and population recovery.
Kiwi welfare is shaped almost entirely by the consequences of New Zealand's introduced predator crisis. In unmanaged bush, stoats kill kiwi chicks with near-total efficiency during boom years when stoat populations explode. Predator trapping and poison operations protect chicks enough to allow population recovery, but the welfare of individual kiwi subjected to stoat attacks is severe — kiwi surviving stoat encounters frequently have extensive injuries. Operation Nest Egg's incubation and release programme dramatically improves survival but involves handling stress during egg collection and chick release. The welfare case for intensive management — including 1080 aerial drops that welfare advocates have debated — ultimately rests on the far greater suffering and extinction risk in unmanaged populations.