darwins rhea, rhea pennata, also known as the lesser rhea, is a large flightless bird, but the smaller of the two extant species

african also america american americana animal animals arid aves beak bird camelus conservation curious darwin darwins detail extant eyelashes fauna feather flightless grass greater green grey head hunted insects known large lesser lizards long nandu natural nature neck one ostrich ostriches park pennata plant plumage rhea rheas smaller south species struthio two wild wildlife zoo