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A Greater Rhea, Rhea americana, by pond
Australian native Emu walking through the bush
Buff-crested bustards in Maasai Mara Game Reserve, Kenya.
White common ostrich
Darwin's rhea, Rhea pennata also known as the lesser rhea. It is a large flightless bird, but the smaller of the two extant species of rheas.
Female Ostrich in Nairobi National Park, Kenya
The greater rhea (Rhea americana) is a flightless bird found in eastern South America and is found in the Pantanal, Brazil
secretary bird walking on wild grass. The secretarybird or secretary bird (Sagittarius serpentarius) is a very large, mostly terrestrial bird of prey. Endemic to Africa.
Kori Bustard (Ardeotis Kori) in Etosha National Park, Namibia
Americana ostrich nandu is a large bird looking away. Close-up of an ostrich's head on a blurred background of nature.
South African ostrich (Struthio camelus australis) in !Karas region
An illustration of Gastornis, an extinct genus of large flightless birds that lived during the late Paleocene and Eocene epochs of the Cenozoic era. They grew to a height of 6.6 feet.
A wild ostrich by the ocean in South Africa
Closeup Greater Rhea (Rhea americana) seen from profile
The emu is the second-largest living bird by height, after its ratite relative, the ostrich
Great Indian Bustard (Ardeotis nigriceps) female standing in dry scrub. Gujarat India  November
A Corey Bustard, with splendid setting shot in the Serengeti plains – Tanzania
southern cassowary (Casuarius casuarius)
Side view of an ostrich with some chicks  walking during the heat of the day in the grasses of the savannah during the dry season.
portrait of an Emu (Dromaius novaehollandiae) at zoo in Taipei Taiwan
The Lesser Rhea is a large flightless bird. It is sometimes known as Darwin’s Rhea, named after the famous naturalist and evolutionist as he used the Rhea to demonstrate his theory of evolution. The feathers of the Rhea are similar to those of the ostrich.The sharp toed claws are used as effective weapons. It is extremely agile and can reach speeds of up to 40mph, enabling it to escape many predators. It is essentially a herbivore. Their habitat is grasslands and scrub land of South America. Good copy space.
Photograph of two large adult Emus on a dirt track in The Central Tablelands of New South Wales in Australia.
Greater rhea (Rhea americana) or nandu is a ostrich like flightless bird living in Southamerican pampas. Torres del Paine national park, Chile
big bird from South America named Nandu
Headshot of a Nandu, also called Rhea Americana, Common Rhea or simply Rhea which is, like the ostrich, a ratite bird.
A large cassowary  looking like a prehistoric bird
Ostrich at park
ostrich close-up ostrich muscles
Secretary bird in search for grasshoppers in the tall grasses of the savanna.\n\nTaken in the Masai Mara, Kenya, Africa
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