Definition that contains ratite bird
- partridge heavy-bodied small-winged South American game bird resembling a gallinaceous bird but related to the ratite birds
- order struthioniformes a ratite bird order: ostriches and related extinct birds; known from the Pleistocene onward
- apterygiformes a ratite bird order: flightless ground birds having vestigial wings and long bills and small eyes: kiwis
- order casuariiformes a ratite bird order: cassowaries and emus
- ratitae used in former classifications to include all ratite bird orders
- superorder ratitae used in former classifications to include all ratite bird orders
- casuariiformes a ratite bird order: cassowaries and emus
- order dinornithiformes a ratite bird order: recently extinct flightless birds of New Zealand
- rheiformes a ratite bird order: birds intermediate in characteristics between ostriches and emus: recent and extinct rheas
- dinornithiformes a ratite bird order: recently extinct flightless birds of New Zealand