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Walking on a green meadow against forest background, Pantanal Wetlands
White common ostrich
Adult ostrich isolated on white background
South African ostrich (Struthio camelus australis) in !Karas region
A Greater Rhea, Rhea americana, by pond
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)
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.
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.
Emu from Queensland, Australia.  Large soft-feathered Flightless birds with long necks and legs. Dry grassland, Native to Australia.
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.
The fight - Two large male ostriches fighting over a group of females in Tarangire National Park with savannah in the background – Tanzania
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.
Adult and chick Rheas, also know as nandus or South American ostriches.
big bird from South America named Nandu
Australian native Emu walking through the bush
Greater Rhea in pampas landscape, Patagonia,  Argentina
Close up portrait of wild mother emu foraging in Australian bushland
Female Ostrich in Nairobi National Park, Kenya
Wattled Crane, Grus caruncula, Moremi Wildlife Reserve, Botswana, Gruiformes, Gruidae. Threatened and vulnerable.
Rhea or Nandu mother and babies foraging in grass, Pantanal Wetlands, Mato Grosso, Brazil
Greater rhea (Rhea americana) or nandu is a ostrich like flightless bird living in Southamerican pampas. Torres del Paine national park, Chile
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 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.
Headshot of a Nandu, also called Rhea Americana, Common Rhea or simply Rhea which is, like the ostrich, a ratite bird.
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.
Ostrich at park
Closeup Greater Rhea (Rhea americana) seen from profile
Kori Bustard (Ardeotis Kori) in Etosha National Park, Namibia
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