#ratite_bird__ratite__flightless_bird  flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
  exclusion:  carinate_bird
  supertype:  bird  warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
  subtype:  ostrich__struthiocamelu  fast-running African flightless bird with two-toed feet; largest living bird
  subtype:  cassowary  large black flightless bird of Australia and New Guinea having a horny head crest
  subtype:  emu__Dromaius_novaehollandiae__Emu_novaehollandiae  large Australian flightless bird similar to the ostrich but smaller
  subtype:  kiwi__apteryx  nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes
  subtype:  Rhea_americana__rhea  larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia
  subtype:  rhea__nandu__Pterocnemia_pennata  smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Straits of Magellan
  subtype:  elephant_bird__aepyornis__aepyorni  huge (to 9 ft.) extinct flightless bird of Madagascar
  subtype:  moa  extinct flightless bird of New Zealand
     subtype:  giant_moa__giantmoa__Dinornis_giganteus  the largest moa; about 12 feet high
     subtype:  anomalopteryx__Anomalopteryx_oweni  the smallest moa; slender moa about the size of a large turkey

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