flightless bird

How to sign: flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds

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Similiar / Same: ratite, ratite bird

Categories: bird

Within this category: cassowary, elephant bird, emu, kiwi, moa, ostrich, rhea, rhea