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Greater rhea
The greater rhea (''Rhea americana'') is a flightless bird found in eastern South America. Other names for the greater rhea include the grey, common, or American rhea; ñandú (Guaraní); or ema (Portuguese). One of two species in the genus Rhea, in the family Rheidae, the greater rhea is endemic to Argentina, Bolivia, Brazil, Paraguay and Uruguay. It inhabits a variety of open areas, such as grasslands, savanna or grassy wetlands. Weighing , the greater rhea is the largest bird in South America.〔 In the wild, the greater rhea has a life expectancy of 10.5 years.〔 It is also notable for its reproductive habits, and for the fact that a group has established itself in Germany in recent years.〔 The species is listed as Near Threatened by the IUCN.
==Taxonomy and systematics==
The greater rhea derives its scientific name from Rhea, a Greek goddess, and the Latinized form of America.〔 It was originally described by Carolus Linnaeus〔 in his 18th-century work, Systema Naturae under the name Struthio camelus americanus.〔 He identified specimens from Sergipe, and Rio Grande do Norte, Brazil, in 1758.〔 They are from the family Rheidae, and the order Struthioniformes, commonly known as ratites. They are joined in this order by emus, ostriches, cassowaries, and kiwis, along with the extinct forms moas, and elephant birds.
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