Christophe Courteau / White backed vulture (Gyps africanus) feeding, Linyanti Game Reserve, Botswana.

Neil Aldridge / White-backed vultures (Gyps africanus) feed on a wildebeest carcass, Chobe, Botswana, August.

Anup Shah / White-backed vultures (Gyps africanus) waiting for Spotted hyenas (Crocuta crocuta) to finish feeding on a kill. Maasai Mara National Reserve, Kenya.

Anup Shah / White-backed vultures (Gyps africanus) feeding on the carcass of a Common or Plains zebra. Masai Mara National Reserve, Kenya. Taken with remote wide angle camera.

Denis-Huot,Denis-Huot / White-backed Vulture (Gyps Africanus) feeding, Masai-Mara Game Reserve, Kenya

Denis-Huot,Denis-Huot / Lion (Panthera leo) male chasing White backed vultures (Gyps africanus) off its prey, Masai-Mara Game Reserve, Kenya. Vulnerable species.

Juan Carlos Munoz / Bearded Vultures (Gypaetus barbatus) juvenile (left) and adult fighting in flight. Simien National Park, Ethiopia, Africa.

Juan Carlos Munoz / Bearded vulture (Gypaetus barbatus) chasing Thick-billed Raven (Corvus crassirostris) in flight. Simien National Park, Ethiopia, Africa.

Anup Shah / White-backed vulture (Gyps africanus) and Marabou stork (Leptoptilos crumeniferus) feeding from the carcass of a Cape buffalo (Cyncerus caffer) covered with flies - wide angle perspective. Masai Mara...

Anup Shah / White-backed vultures (Gyps africanus) feeding from the carcass of a Cape buffalo (Cyncerus caffer) - wide angle perspective. Masai Mara National Reserve, Kenya. February

Anup Shah / White-backed vultures (Gyps africanus) and Black-back jackal (Canis mesomelas) feeding from the carcass of a Cape buffalo (Cyncerus caffer) - wide angle perspective. Masai Mara National Reserve, Kenya...

Anup Shah / Flock of White-backed vultures (Gyps africanus) feeding on a carcass, wide angle perspective. Masai Mara National Reserve, Kenya. September

Guy Edwardes / African White-backed Vulture (Gyps africanus) close-up in flgiht, coming in to land on carcass, Serengeti National Park, Tanzania, Africa, February

Anup Shah / White backed vulture {Gyps africanus} head and neck covered in blood from feeding, Masai Mara GR, Kenya

Anup Shah / Vulture landing on tree silhouetted at sunrise, Masai Mara reserve, Kenya

Luiz Claudio Marigo / White backed vultures sunning {Gyps africanus} Samburu GR, Kenya

Ann & Steve Toon / Marabou (Leptoptilos crumenifer) with White-backed vulture (Gyps africanus) Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vultures (Gyps africanus) mating, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) chased by spotted hyena, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) chased by spotted hyena, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vultures (Gyps africanus) feeding, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Lappetfaced vulture (Torgos tracheliotos) and whitebacked vultures (Gyps africanus), Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) fighting over food, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) fighting over food, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) taking off, Zimanga private game reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus), Zimanga private game reserve, KwaZulu-Natal, South Africa.

Tony Heald / White-backed vulture (Gyps africanus) flying towards camera. Kruger National Park, South Africa.

Tony Heald / White-backed vulture (Gyps africanus) flying towards camera. Kruger National Park, South Africa.

Staffan Widstrand / African White-backed Vulture (Gyps africanus) feeding, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

Richard Du Toit / Whitebacked Vulture (Gyps africanus) flying, Kruger National Park, Limpopo Province, South Africa.

Richard Du Toit / Whitebacked Vulture (Gyps africanus )in tree, Kruger National Park, Limpopo Province, South Africa.

Eric Baccega / White backed vulture (Gyps africanus), perched on branch, South Luangwa National Park, Zambia

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) wings spread, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) flying, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) wings spread, Zimanga private game reserve, KwaZulu-Natal, South Africa, September

Naskrecki & Guyton / White-backed vultures (Gyps africanus) feed in a frenzy at a waterbuck carcass (Kobus ellipsiprymnus), Gorongosa National Park, Mozambique. Waterbuck are large animals with tough hides, and in Gorongo...

Ann & Steve Toon / Whitebacked vultures (Gyps africanus) threat display to Warthog (Phacochoerus africanus) Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) with pied crows (Corvus albus) Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / RF - Marabou (Leptoptilos crumenifer) with Whitebacked vultures (Gyps africanus) Zimanga Private Game Reserve, KwaZulu-Natal, South Africa. (This image may be licensed either as rights managed or roya...

Jen Guyton / Biologist Teague Scott releases a white-backed vulture (Gyps africanus) that has just been fitted with wing tags. Biologists work quickly to minimize the stress that these birds experience during capt...

Jen Guyton / Rüppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) squabble over an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. Dozens of vultures can feed on t...

Jen Guyton / White-backed vultures (Gyps africanus) pick at the drying and deflated skin of an elephant carcass (Loxodonta africana) while spotted hyenas (Crocuta crocuta) look on, Laikipia Plateau, Kenya. The hye...

Jen Guyton / Rüppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) feed on an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The elephant was killed by government...

Jen Guyton / White-backed vultures (Gyps africanus) pick at an elephant carcass (Loxodonta africana) while a spotted hyena (Crocuta crocuta) looks on, Laikipia Plateau, Kenya. The hyena is tinted a reddish-brown f...

Jen Guyton / Spotted hyenas (Crocuta crocuta), Rüppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) at the carcass of an elephant (Loxodonta africana), as the night and day shifts...

Jen Guyton / Biologist Eric Hallingstad carrying white-backed vulture (Gyps africanus) to the processing station, to fit it with a wing tag and GPS transmitter. Gorongosa National Park, Mozambique

Jen Guyton / Biologist Eric Hallingstad carrying white-backed vulture (Gyps africanus) to the processing station, to fit it with a wing tag and GPS transmitter. Gorongosa National Park, Mozambique

Jen Guyton / A spotted hyena (Crocuta crocuta) chases a flock of white-backed vultures (Gyps africanus) away from an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The hyenas are tinted a reddish...

Jen Guyton / White-backed vultures (Gyps africanus) and spotted hyenas (Crocuta crocuta) pick at the drying and deflated skin of an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The hyenas are ti...

Jen Guyton / Ayla Kaltenecker, an aspiring young scientist and the daughter of one of the project's lead scientists, Greg Kaltenecker, measures the head length of an endangered white-backed vulture (Gyps africanus...

Jen Guyton / White-backed vultures (Gyps africanus) and spotted hyenas (Crocuta crocuta) squabble over the drying and deflated skin of an elephant carcass (Loxodonta africana), Laikipia Plateau, Kenya. The hyenas...

Jen Guyton / Scientist Dr. Greg Kaltenecker holding a White-backed vulture (Gyps africanus) caught to attach GPS transmitter, Gorongosa National Park, Mozambique. The researchers temporarily put a sock over its he...

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) mobbed by Pied crow (Corvus albus), Zimanga private game reserve, KwaZulu-Natal, South Africa, June.

Eric Baccega / Lappet faced vulture (Aepyoius / Torgus tracheliotus) and White-backed vulture (Gyps africanus) feeding on zebra carcass. Masai Mara National Reserve, Kenya.

Eric Baccega / Lappet faced vulture (Aepyoius / torgus tracheliotus) landing on zebra carcass with White-backed vulture (Gyps africanus) and Marabou stork (Leptoptilos crumeniferus) around. Masai Mara National Reser...

Naskrecki & Guyton / Marabou stork (Leptoptilos crumenifer) stands on the head of a waterbuck carcass, while white-backed vultures (Gyps africanus) feed in the background. Gorngosa National Park, Mozambique

Denis-Huot / Black-backed jackal (Canis mesomelas), scavenging with Marabou stork (Leptoptilos crumenifer) and White backed vulture (Gyps africanus) Masai-Mara Game Reserve, Kenya.

Denis-Huot / Lappet-faced vulture (Torgos tracheliotus),feeding on Thomson's gazelle (Eudorcas thomsonii) calf with White-backed vulture (Gyps africanus) Masai-Mara Game Reserve, Kenya,

Ann & Steve Toon / Lappetfaced vulture (Torgos tracheliotos) harrassing whitebacked vulture (Gyps africanus) at carcass, Zimanga Private Game Reserve, South Africa, January.

Ann & Steve Toon / Whitebacked vultures (Gyps africanus) at carcass, Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus), Zimanga Private Game Reserve, KwaZulu-Natal, South Africa.

Melvin Grey / African white-backed vulture (Gyps africanus) adult. Captive bird (occurs in Africa)

Ingo Arndt / White-backed Vultures (Gyps africanus) sitting on termite mound, Masai-Mara Game Reserve, Kenya

Ingo Arndt / White-backed vulture (Gyps africanus) sitting on tree, Masai-Mara Game Reserve, Kenya

Ingo Arndt / White-backed vulture (Gyps africanus) sitting on tree, Masai-Mara Game Reserve, Kenya

Silke Arndt / Male Common warthog (Phacochoerus africanus) feeding on a dead Blue wildebeest (Connochaetes taurinus), with White-backed vultures (Gyps africanus), Masai Mara National Reserve, Kenya.

Silke Arndt / Male Common warthog (Phacochoerus africanus) feeding on a dead Blue wildebeest (Connochaetes taurinus), with White-backed vultures (Gyps africanus), Masai Mara National Reserve, Kenya.

Christophe Courteau / Group of African white-backed vultures (Gyps africanus) feeding on a dead female BurchellÕs zebra (Equus quagga burchellii) that died due to complications giving birth, Etosha National Park, Namibia....

Christophe Courteau / Group of African white-backed vultures (Gyps africanus) feeding on a dead female BurchellÕs zebra (Equus quagga burchellii) that died due to complications giving birth, Etosha National Park, Namibia....

Ann & Steve Toon / RF - Whitebacked vulture (Gyps africanus) gathering to feed, Zimanga Private Game Reserve, KwaZulu-Natal, South Africa, September. (This image may be licensed either as rights managed or royalty free....

Ole Jorgen Liodden / White backed vultures (Gyps africanus) in tree, South Africa

Jen Guyton / Ruppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) squabble over an elephant carcass (Loxodonta africana) The elephant was killed by government officials after it k...

Jen Guyton / Ruppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) squabble over an elephant carcass (Loxodonta africana); the elephant was killed by government officials after it...

Jen Guyton / Ruppell's griffon vultures (Gyps rueppelli) and white-backed vultures (Gyps africanus) squabble over an elephant carcass (Loxodonta africana). the elephant was killed by government officials after it...

Jen Guyton / Spotted hyena (Crocuta crocuta) stops to look while white-backed vultures (Gyps africanus) and Rüppell's vultures (Gyps rueppelli) pick at the final remains of an elephant carcass (Loxodonta africana)...

Barrie Britton / Red-headed vultures (Sarcogyps calvus) and White-rumped vultures (Gyps bengalensis) and Slender-billed vultures (Gyps tenuirostris). Preah Vihear Protected Forest, Cambodia. Take on location for BBC '...

Barrie Britton / White-rumped Vulture (Gyps bengalensis) with large-billed Crow (Corvus macrorhynchos). Preah Vihear Protected Forest, Cambodia. Picture taken during filming for BBC 'Lands of the Monsoon' TV series.

Tony Heald / White-backed vulture (Gyps africanus) sunbathing amongst Devil's-thorn yellow flowers (Tribulus terrestris), Etosha National Park, Namibia, March.

Tony Heald / White-backed vulture (Gyps africanus) on carcass ribs Chobe National Park, Botswana.

Tony Heald / White-backed vulture (Gyps africanus) on carcass ribs Chobe National Park, Botswana.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) flying in to feed. Zimanga private game reserve, KwaZulu-Natal, South Africa. September.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus). Zimanga private game reserve, KwaZulu-Natal, South Africa. September.

Ann & Steve Toon / Whitebacked vultures (Gyps africanus) feeding. Zimanga private game reserve, KwaZulu-Natal, South Africa. September.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus) with wings open, Zimanga private game reserve, KwaZulu-Natal, South Africa. September.

Ann & Steve Toon / Whitebacked vulture (Gyps africanus). Zimanga private game reserve, KwaZulu-Natal, South Africa. September.

Christophe Courteau / White backed vultures (Gyps africanus) and Black backed jackals (Canis mesomelas) near Burchell's zebra (Equus burchelli) carcass, Etosha National Park. Namibia.

Andy Rouse / White backed Vulture (Gyps africanus) in tree at sunset South Luangwa, Zambia, Africa. October.

Andy Rouse / White backed Vulture (Gyps africanus) landing on carcass Masai Mara, Africa. August.

Anup Shah / White-backed vulture (Gyps africanus) lying sick on the ground unable to move. Masai Mara National Reserve, Kenya.

Anup Shah / White-backed vulture (Gyps africanus) lying sick on the ground unable to move, possibly poisoned. Masai Mara National Reserve, Kenya.

Anup Shah / White-backed vulture (Gyps africanus) lying sick on the ground unable to move. Masai Mara National Reserve, Kenya.

Pedro Narra / Palm-nut vulture (Gypohierax angolensis) carrying baby Green Turtle (Chelonia mydas) which has just emerged from the nest, Bijagos Islands, Guinea Bissau.

Wim van den Heever / White-backed vultures (Gyps africanus) fighting over a carcass, Greater Kruger National Park, South Africa.

Wim van den Heever / Lappet-faced vulture (Torgos tracheliotus) with White-backed vultures (Gyps africanus) in the background. Greater Kruger National Park, South Africa.

Anup Shah / White-backed vultures (Gyps africanus) roosting in a dead tree at sunrise. Maasai Mara National Reserve, Kenya. December

Pedro Narra / Palm-nut vulture (Gypohierax angolensis) feeding on baby Green turtle (Chelonia mydas) emerging from the nest, Bissagos Islands, Guinea Bissau. 3rd Place in the SOS Especes Menacees / SOS Endangered S...