| Ostriches | | Rheas | | | Rheas | | Kiwis | | Cassowaries | | Tinamous | | Waterfowl | | Landfowl | | Nightjars | | Oilbird | | Frogmouths | | Owlet-nightjars | | Treeswifts, Swifts, Hummingbirds | | Turacos | | Bustards | | Cuckoos | | Mesites | | Sandgrouse | | Doves, Pigeons | | Cranes, Rails & relatives | | Grebes | | Flamingos | | Shorebirds | | Sunbittern, Kagu | | Tropicbirds | | Loons | | Penguins | | Tubenoses | | Storks | | Gannets, Cormorants & relatives | | Pelicans, Ibises, Herons & relatives | | Hoatzin | | Birds of Prey | | Owls | | Mousebirds | | Cuckoo roller | | Trogons | | Hornbills, Hoopoes, Wood hoopoes | | Rollers, Kingfishers, Bee-eaters & relatives | | Woodpeckers and Relatives | | Seriemas | | Falcons, Caracaras | | Parrots | | Perching birds (Songbirds) |
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Argentine Greater rhea
(Rothschild's rhea)
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Rhea americana albescens
(Syn.: Rhea rothschildi)
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LYNCH ARRIBĂLZAGA & HOLMBERG, 1878 |
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| | Information Source for Taxonomy: | del Hoyo & Collar (2014) Illustrated Checklist of the Birds ot the World, Vol. 1, Non-passerines
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