Donald M. Jones / MacGillivray's Warbler (Geothlypis tolmiei) male, Montana

Inaki Relanzon / Ostrichs (Struthio camelus) and African elephants (Loxodonta africana) at David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Inaki Relanzon / African elephant calf (Loxodonta africana) walking with two Ostrichs (Struthio camelus) in David Sheldrick African Elephant Orphanage. Nairobi National Park, Nairobi, Kenya.

Neil Aldridge / Male Ostrich (Struthio camelus) displaying using its tail and wing feathers, Kariega Game Reserve, Eastern Cape, South Africa.

Neil Aldridge / Male Ostrich (Struthio camelus) displaying using its tail and wing feathers, Kariega Game Reserve, Eastern Cape, South Africa.

Neil Aldridge / Male Ostrich (Struthio camelus) head portrait, lit by late afternoon light, Kariega Game Reserve, Eastern Cape, South Africa.

Richard Du Toit / Ostrich (Struthio camelus) pair, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Ostrich (Struthio camelus) male in Pompom Weed (Campuloclinium macrocephalum), Rietvlei Nature Reserve, South Africa

Heini Wehrle / Ostrich (Struthio camelus) chicks, Hwange National Park, Zimbabwe

Denis-Huot / Ostrich (Struthio camelus) female in storm, Masai Mara Game Reserve, Kenya, October,

Denis-Huot / Ostrich (Struthio camelus) female displaying, Masai Mara Game Reserve, Kenya, September.

Thomas Marent / Ostrich (Struthio camelus) female, Serengeti National Park, Tanzania

Thomas Marent / Ostrich (Struthio camelus) male, Serengeti National Park, Tanzania

Thomas Marent / Ostrich (Struthio camelus) male, Serengeti National Park, Tanzania

Anup Shah / Ostrich (Struthio camelus) male, female and young. Maasai Mara National Reserve, Kenya.

Anup Shah / Ostrich (Struthio camelus) couple courting. Maasai Mara National Reserve, Kenya.

Oliver Scholey / Cheetah (Acinonyx jubatus) walking past Ostriches (Struthio camelus) Masai Mara, Kenya.

Anup Shah / Ostrich (Struthio camelus) pair courting, Masai Mara, Kenya

Anup Shah / Ostrich (Struthio camelus) pair courting, Masai Mara, Kenya

Anup Shah / Ostrich (Struthio camelus) pair courting, Masai Mara, Kenya

Hiroya Minakuchi / Ostrich (Struthio camelus) eggs in sand, Africa

Denis-Huot / Spotted hyaena (Crocuta crocuta) female with Ostrich (Struthio camelus) egg, Masai-Mara game reserve, Kenya.

Denis-Huot / Spotted hyaena (Crocuta crocuta) female picking up Ostrich (Struthio camelus) egg, Masai-Mara game reserve, Kenya.

Denis-Huot / Spotted hyaena (Crocuta crocuta) female and young with Ostrich (Struthio camelus) egg, Masai-Mara game reserve, Kenya.

Richard Du Toit / Ostrich (Struthio camelus) female, Rietvlei Nature Reserve, Gauteng, South Africa

Philippe Clement / Common ostrich (Struthio camelus) close up of head, Cabarceno Park, Cantabria, Spain. Captive, occurs in Africa.

Philippe Clement / Common ostrich (Struthio camelus) close up of head, Cabarceno Park, Cantabria, Spain. Captive, occurs in Africa.

Philippe Clement / Common ostrich (Struthio camelus) close up of head, Cabarceno Park, Cantabria, Spain. Captive, occurs in Africa.

Philippe Clement / Common ostrich (Struthio camelus) males, Cabarceno Park, Cantabria, Spain. Captive, occurs in Africa.

Hougaard Malan / Ostrich (Struthio camelus) with chicks on a dune in the Kalahari. Kgalagadi Transfrontier Park, Southern Africa, February. Non-ex.

Ann & Steve Toon / Ostrich (Struthio camelus) female foraging with chick, Kgalagadi Transfrontier Park, Northern Cape, South Africa, January

Ann & Steve Toon / Ostrich (Struthio camelus) male with chicks, Kgalagadi Transfrontier Park, Northern Cape, South Africa, January

Ann & Steve Toon / Ostrich (Struthio camelus) female with chick standing in the shade, Kgalagadi Transfrontier Park, Northern Cape, South Africa, February

Tony Heald / African elephant (Loxodonta africana) with Giraffes (Giraffa camelopardalis) and an Ostrich (Struthio camelus) in background. Etosha National Park, Namibia.

Richard Du Toit / Ostrich (Struthio camelus) male drinking showing red legs, Kgalagadi Transfrontier Park, Northern Cape Province, South Africa, December.

Richard Du Toit / Ostrich (Struthio camelus) male showing red legs, Kgalagadi Transfrontier Park, Northern Cape Province, South Africa, December.

Denis-Huot / Ostrich (Struthio camelus) mating, Masai-Mara game reserve, Kenya, September

Tony Phelps / Ostrich (Struthio camelus) female with chicks. deHoop Nature Reserve, Western Cape, South Africa.

Tony Phelps / Ostrich (Struthio camelus) male, female and young. deHoop Nature Reserve, Western Cape, South Africa.

Enrique Lopez-Tapia / Gemsbok (Oryx gazella) at waterhole, with Ostrich (Struthio camelus), Springbok (Antidorcas marsupialis) and Kori bustard (Ardeotis kori). Etosha National Park, Namibia.

Richard Du Toit / Ostrich (Struthio camelus) towering above small chicks, Kgalagadi Transfrontier Park, South Africa

Richard Du Toit / Ostrich (Struthio camelus) male and small chicks, Kgalagadi Transfrontier Park, South Africa

Richard Du Toit / Ostrich (Struthio camelus) males in competitive display, Kgalagadi Transfrontier Park, South Africa

Richard Du Toit / Ostrich (Struthio camelus) male taking a dustbath, Kgalagadi Transfrontier Park, South Africa

Richard Du Toit / Ostrich (Struthio camelus) mother and chicks crossing road, South Africa

Eric Baccega / Close up of feet of Masai ostrich (Struthio camelus massaicus) Masai Mara National Reserve, Kenya, Africa.

Eric Baccega / Close up of feet of Masai ostrich (Struthio camelus massaicus) Masai Mara National Reserve, Kenya, Africa.

Eric Baccega / Ostrich (Struthio camelus) male with chicks Samburu National Reserve, Kenya, Africa.

Eric Baccega / Male Masai ostrich walking (Struthio camelus massaicus) Masai Mara National Reserve, Kenya, Africa.

Eric Baccega / Masai ostrich male portrait (Struthio camelus massaicus) Masai Mara National Reserve, Kenya, Africa.

Juan Carlos Munoz / Ostrich (Struthio camelus) captive, Cabarceno Park, Cantabria, Spain, June.

Ingo Waschkies / Somali Ostrich (Struthio camelus molybdophanes) female, Buffalo Springs National Reserve, Kenya

Oscar Diez / Ostrich (Struthio camelus) pair in desert, Namib-Naukluft National Park, Namibia

Denis-Huot / Ostrich (Struthio camelus) male, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) couple displaying, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female close up of wings, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female with wings spread to protect her nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female running, Masai-Mara Game Reserve, Kenya

Denis-Huot / Masai Ostrich (Struthio camelus) male, Nakuru National Park, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male turning eggs on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male on nest, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male chasing a female, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female displaying, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male with chicks, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) females fighting and chicks, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female with chicks, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female and male with chicks, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female and male with chicks, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female portrait, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female portrait, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) juvenile portrait, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) female, head portrait, Masai-Mara Game Reserve, Kenya

Denis-Huot / Ostrich (Struthio camelus) male in profile, Bogoria Game Reserve, Kenya

Kevin Schafer / Ostrich (Struthio camelus) female near shore, Cape of Good Hope, Cape Peninsula, South Africa

Kevin Schafer / Ostrich (Struthio camelus) female feeding near shore, Cape of Good Hope, Cape Peninsula, South Africa

Richard Du Toit / Ostrich (Struthio camelus) group of three males and one female walking in savannah, Rietvlei Nature Reserve, South Africa

Richard Du Toit / Ostrich (Struthio camelus) pair about to mate, Rietvlei Nature Reserve, South Africa

ZSSD / Egyptian Vulture (Neophron percnopterus) breaking Ostrich (Struthio camelus) egg with rock, native to Africa

D. Parer & E. Parer-Cook / Ostrich (Struthio camelus) male and female, Ngorongoro Conservation Area, Tanzania

D. Parer & E. Parer-Cook / Ostrich (Struthio camelus) male, Amboseli National Park, Kenya

Richard Du Toit / Ostrich (Struthio camelus) chicks drinking, Kgalagadi Transfrontier Park, South Africa

Winfried Wisniewski / Ostrich (Struthio camelus) pair courting, Masai Mara, Kenya

Winfried Wisniewski / Ostrich (Struthio camelus) male, Masai Mara, Kenya

Theo Allofs / Ostrich (Struthio camelus) group running in front of sand dune, Namib Desert, Namibia

Loic Poidevin / Common ostrich (Struthio camelus) running, Masai mara, Kenya, Africa

Richard Du Toit / Ostrich (Struthio camelus) male, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Ostrich (Struthio camelus) female, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Ostrich (Struthio camelus) male with chicks, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Ostrich (Struthio camelus) juvenile near parent, Rietvlei Nature Reserve, Gauteng, South Africa

Richard Du Toit / Ostrich (Struthio camelus), Rietvlei Nature Reserve, Gauteng, South Africa

Tim Fitzharris / Ostrich (Struthio camelus) male and females, Masai Mara, Kenya