Ann & Steve Toon / Ostrich (Struthio camelus) silhouetted in dust storm. Kalahari Gemsbok National Park, Kgalagadi Transfrontier National Park, Northern Cape, South Africa. Commended in the Bird Photographer of the Year...

Christophe Courteau / Ostriches (Struthio camelus) running in the distance in a mirage, Sossusvlei, Namib-Nauckluft National Park, Namib Desert, Namibia.

Yva Momatiuk & John Eastcott / Ostrich (Struthio camelus) female, Etosha National Park, Namibia

Yva Momatiuk & John Eastcott / Ostrich (Struthio camelus) sub-adults at waterhole in dry season, Etosha National Park, Namibia

Ann & Steve Toon / Ostrich (Struthio camelus) male standing in landscape, Table Mountain National Park, Western Cape, South Africa

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

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

Hougaard Malan / Ostrich (Struthio camelus) pair and chicks on dune in the Kalahari. Kgalagadi Transfrontier Park, Southern Africa, February.

Eric Baccega / Male Ostrich (Struthio camelus) protecting chicks from the sun with its wings, Samburu National Reserve, Kenya, Africa.

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

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

Ingo Arndt / Ostrich (Struthio camelus) female chasing away rival, Masai Mara National Reserve, Kenya