Jouan & Rius / Male Red hartebeest (Alcelaphus buselaphus) fighting, Kgalagadi Transfrontier Park, Kalahari desert, South Africa

Ann & Steve Toon / Red hartebeest (Alcelaphus buselaphus caama) with young, Kgalagadi transfrontier park, South Africa.

Loic Poidevin / Coke's Hartebeest (Alcelaphus buselaphus) standing on a mound, Masai Mara, Kenya. March.

Loic Poidevin / Hartbeest (Alcelaphus buselaphus) with young, Masai Mara, Kenya.

Pedro Narra / Red hartebeest (Alcelaphus buselaphus), Etosha National Park, Namibia

Klein & Hubert / Red Hartebeest (Alcelaphus caama) herd in karoo grassland, South Africa.

Klein & Hubert / Red Hartebeest (Alcelaphus caama) herd in karoo grassland, South Africa.

Emanuele Biggi / Red hartebeest (Alcelaphus buselaphus) in dry savannah, Etosha National Park, Namibia

Richard Du Toit / RF - Red hartebeest (Alcelaphus buselaphus) calves playing, one jumping, Rietvlei Nature Reserve, South Africa (This image may be licensed either as rights managed or royalty free.)

Ann & Steve Toon / Red hartebeest (Alcelaphus buselaphus caama) males fighting, Kgalagadi Transfrontier Park, Northern Cape, South Africa, January.

Sylvain Cordier / Swayne's hartebeest (Alcephalus busephalus swaynei), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Swayne's hartebeest (Alcephalus busephalus swaynei), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Swayne's hartebeest (Alcephalus busephalus swaynei), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Swayne's hartebeest (Alcephalus busephalus swaynei), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Swayne's hartebeest (Alcephalus busephalus swaynei), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Oribi (Ourebia ourebi montana), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Oribi (Ourebia ourebi montana), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Sylvain Cordier / Oribi (Ourebia ourebi montana), Senkelle Swayne's Hartebeest Sanctuary, Ethiopia

Denis-Huot / Newborn korrigum topi (Damaliscus lunatus korrigum) playing after the rains, Masai-Mara Game Reserve, Kenya. December.

Denis-Huot / Korrigum topi (Damaliscus lunatus korrigum) running in the rain, Masai-Mara Game Reserve, Kenya. February.

George Sanker / Topis (Damaliscus korrigum) mature males sparring in a Serengeti sunrise. Masai Mara National Reserve, Kenya, East Africa, January.

Loic Poidevin / Coke's Hartebeest (Alcelaphus buselaphus cokii) portrait, Masai Mara, Kenya.

Enrique Lopez-Tapia / Hartebeest (Alcelaphus buselaphus) Etosha National Park, Namibia.

Enrique Lopez-Tapia / Hartebeest (Alcelaphus buselaphus) Etosha National Park, Namibia.

Eric Baccega / Coke's hartebeest (Alcelaphus bucephalus cokii) head portrait Masai Mara National Reserve, Kenya, Africa.

Denis-Huot / Coke's Hartebeest (Alcelaphus bucephalus cokii) mother and young, Masai-Mara game reserve, Kenya

Denis-Huot / Coke's Hartebeest (Alcelaphus bucephalus cokii) portrait, Masai-Mara game reserve, Kenya

Denis-Huot / Coke's Hartebeest (Alcelaphus bucephalus cokii) newborn, Masai-Mara game reserve, Kenya

Ann & Steve Toon / Lelwel hartebeest (Alcelaphus buselaphus lelwel) family group, Ol Pejeta Conservancy, Laikipia, Kenya, Africa

Sue Flood / Red hartebeest (Alcelaphus buselaphus) standing portrait, Masai Mara National Reserve, Kenya.

Ben Hall / Red hartebeest (Alcelaphus buselaphus) walking over dry scrub, Karoo, South Africa, February

Richard Du Toit / Hartebeest (Alcelaphus buselaphus) resting on dusty ground. Kgalagadi, South Africa, February.

Thomas Rabeil / Herd of Hartebeet (Alcelaphus buselaphus) near ash of campfire. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Thomas Rabeil / Three Hartebeest (Alcelaphus buselaphus) seen from the air. Sahelo-Sudanese Biome, W National Park (UNESCO, IUCN & RAMSAR), Niger. Aerial census, May 2011.

Graham Eaton / A pair of Jackson’s / Lelwel Hartebeest (Alcelaphus buselaphus jacksoni / lelweli) standing in scrub. Murchison Falls National Park, Uganda, April.

Richard Du Toit / Red hartebeest (Alcelaphus caama) drinking, Kalahari, Northern Cape, South Africa, January

Laurent Geslin / Red hartebeest (Alcelaphus buselaphus) standing on termite mound, Masai Mara reserve, Kenya

Charlie Summers / Coke's Hartebeest (Alcelaphus buselaphus cokii) males fighting, Ngorongoro Crater of Tanzania, East Africa

Ann & Steve Toon / Red hartebeest (Alcelaphus buselaphus) with young, Kgalagadi transfrontier, National Park, Northern Cape, South Africa

Richard Du Toit / Red hartebeest (Alcelaphus buselaphus) male on skyline, Eastern Cape, South Africa, June

Edwin Giesbers / Two Coke's hartebeest (Alcelaphus buselaphus cokii) Murchison Falls National Park, Uganda

Suzi Eszterhas / Lelwel hartebeest {Alcelaphus buselaphus lelwel} Mother and calf running, Ol Pejata Conservancy, Kenya, Endangered

Suzi Eszterhas / Lelwel hartebeest {Alcelaphus buselaphus lelwel} pair with calf, Ol Pejata Conservancy, Kenya, Endangered

Suzi Eszterhas / Coke's hartebeest {Alcelaphus buselaphus cokii} mother with calf, Masai Mara Triangle, Kenya

Suzi Eszterhas / Coke's hartebeest {Alcelaphus buselaphus cokii} Masai Mara Triangle, Kenya

Ingo Arndt / Coke's Hartebeest (Alcelaphus buselaphus cokii), Masai Mara National Reserve, Kenya

Jouan & Rius / Red hartebeest (Alcelaphus buselaphus) during rainy season, Valboos NP, South Africa

Jouan & Rius / Red hartebeest (Alcelaphus buselaphus) during rainy season, Valboos NP, South Africa