New Zealand kiwi face severe welfare and conservation threats from introduced predators, with a national predator-free initiative representing one of the most ambitious wildlife welfare programs globally.
Kiwi welfare intersects with one of the world largest wildlife welfare questions: how do we weigh the welfare costs of predator control methods against the welfare benefits to target species populations? The predators being controlled — stoats, rats, possums — also experience welfare harms from 1080 and trapping. The welfare cost-benefit requires comparing the acute suffering of controlled predators against the sustained welfare benefits of kiwi population survival. The Predator Free 2050 initiative is pursuing fertility control and genetic approaches that could reduce lethal control requirements over time. Operation Nest Egg — removing eggs before they can be predated, raising chicks to predator-safe size — is a welfare-positive intervention that prevents the specific welfare harm of chick predation while the broader predator control program continues.