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

Konrad Wothe,Konrad Wothe / Greater Rhea (Rhea americana) male, Pantanal, Brazil, South America

Mary McDonald / Somali ostrich (Struthio camelus) peering beneath itself, Samburu Game Reserve, Kenya, East Africa

Richard Du Toit / Low level view of domestic Ostrich (Struthio camelus), Overberg, Southern Cape, South Africa August

Anup Shah / Maasai ostrich male and female courting (Struthio camelus massaicus) Masai Mara National Reserve, Kenya

Tony Heald / Ostrich [Struthio camelus] courtship display by female, Etosha National Park, Namibia, August

Tony Heald / Ostrich [Struthio camelus] courtship display by female, Etosha National Park, Namibia, August

Christophe Courteau / Oryx (Oryx gazella) and Ostriches (Struthio camelus) running, Etosha National Park, Namibia, August 2009

Solvin Zankl / Ostrich (Struthio camelus) with Sesriem Sossusvlei sand dune in the background, Namib desert, Namibia

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

Anup Shah / Ostrich {Struthio camelus} on savanna at dawn, East Africa