#genus_Pterocnemia__Pterocnemia  a genus of birds of the family Rheidae
  supertype:  bird_genus  a genus of birds
  member of:  family_Rheidae
  member:  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

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