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Genus Rhea
Greater Rhea - The Greater Rhea is also known as the Grey, Common or American Rhea. The native range of this flightless bird is the eastern part of South America; it is not only the largest species of the genus Rhea but also the largest American bird alive. It is also notable for its reproductive habits, and for the fact that a group has established itself in Germany in recent years. In its native range, it is known as ñandú or ema .
Lesser Rhea - Rhea darwinii Rhea macrorhyncha Pterocnemia pennata Pterocnemia darwinii