Definition that contains ant bird
- flightless bird flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
- order aepyorniformes huge extinct flightless birds: elephant birds
- genus aepyornis type genus of the Aepyornidae: elephant birds
- ratite bird flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
- ratite flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
- genus leptoptilus adjutant birds and marabous
- aepyorniformes huge extinct flightless birds: elephant birds
- leptoptilus adjutant birds and marabous