Final answer:
The kiwi bird belongs to the family Apterygidae. This unique flightless bird is native to the predator-reduced environment of New Zealand.
Step-by-step explanation:
The scientific name of the family that the kiwi bird belongs to is Apterygidae. Kiwis are flightless birds native to New Zealand, a country known for its unique and diverse avian population. This absence of flight is attributed to New Zealand's relatively few mammalian predators, allowing birds like the kiwi to evolve without the need to fly away from danger.