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Walking on a green meadow against forest background, Pantanal Wetlands
The fight - Two large male ostriches fighting over a group of females in Tarangire National Park with savannah in the background – Tanzania
Adult ostrich isolated on white background
White common ostrich
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
southern cassowary (Casuarius casuarius)
Australian native Emu walking through the bush
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.
Close up portrait of wild mother emu foraging in Australian bushland
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.
Kori Bustard (Ardeotis Kori) in Etosha National Park, Namibia
Greater Rhea in pampas landscape, Patagonia,  Argentina
Adult and chick Rheas, also know as nandus or South American ostriches.
A Greater Rhea, Rhea americana, by pond
Ostrich at park
A Common Ostrich in the arid Kgalagadi Transfrontier Park straddling South Africa and Botswana.
Headshot of a Nandu, also called Rhea Americana, Common Rhea or simply Rhea which is, like the ostrich, a ratite bird.
Americana ostrich nandu is a large bird looking away. Close-up of an ostrich's head on a blurred background of nature.
Ostrich isolated on white
Ostriches (Struthio camelus) on an ostrich farm, Karoo region, Western Cape, South Africa
Ostriches are large flightless birds of the genus Struthio in the order Struthioniformes, part of the infra-class Palaeognathae, a diverse group of flightless birds also known as ratites that includes the emus, rheas, and kiwis. There are two living species of ostrich: the common ostrich, native to large areas of sub-Saharan Africa and the Somali ostrich, native to the Horn of Africa. They lay the largest eggs of any living land animal. With the ability to run at 70 km/h (43.5 mph), they are the fastest birds on land. They are farmed worldwide, particularly for their feathers as they are used as decoration and feather dusters. Their skin is also used for leather products. They are the heaviest living birds.
Greater rhea (Rhea americana) or nandu is a ostrich like flightless bird living in Southamerican pampas. Torres del Paine national park, Chile
Ostrich standing on dry yellow grass of the African savannah. Etosha National park, Namibia, Africa. Wildlife photography
A female ostrich in the plains, with African savannah landscape in the Masai Mara National Park – Kenya
A large cassowary  looking like a prehistoric bird
Secretary bird in search for grasshoppers in the tall grasses of the savanna.\n\nTaken in the Masai Mara, Kenya, Africa
Greater rhea walking through savanna from side view in Pantanal, Brazil. Wild bird with long legs and neck standing in green leaves. Ostrich from low angle.
Taxon name: Southern Cassowary\nTaxon scientific name: Casuarius casuarius\nLocation: Cairns, Queensland, Australia
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