New Zealand kiwi recovery from near-extinction through intensive predator control operations demonstrates how welfare-positive conservation management can reverse catastrophic population decline.
Kiwi recovery welfare involves welfare trade-offs at multiple levels. Operation Nest Egg removes eggs and chicks from wild nests, a form of necessary intervention with real welfare costs to parent birds and disruption to natural incubation behavior. Predator control using 1080 poison causes deaths in non-target species that raise welfare concerns. Community sanctuary fencing requires intensive infrastructure but eliminates ongoing predator pressure. The welfare case for these interventions rests on the alternative: 95% chick mortality from predation represents far greater individual welfare harm than management interventions. The goal of wild kiwi populations able to breed naturally without intensive management represents the highest welfare outcome.