Definition that contains order apterygiformes
- kiwi nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes
- apterygidae coextensive with the order Apterygiformes
- family apterygidae coextensive with the order Apterygiformes
- apteryx nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes