Charlie Summers / White-backed Vulture (Gyps africanus) in flight. Tarangire National Park, Tanzania.

Diane McAllister / Ruppell's griffon vultures (Gyps rueppellii) and one White-backed vulture (Gyps africanus) taking turns to feed on a zebra carcass, Tanzania, Africa.

Ole Jorgen Liodden / White-backed Vulture (Gyps africanus) in flight. Masai Mara, Kenya, September.

Laurent Geslin / White-Backed Vulture (Gyps africanus) in flight, Masai Mara reserve, Kenya

Laurent Geslin / White-Backed Vulture (Gyps africanus) in flight, landing, Masai Mara reserve, Kenya

Laurent Geslin / White-Backed Vulture (Gyps africanus) in flight, landing, Masai Mara reserve, Kenya

Suzi Eszterhas / Side-striped Jackal (Canis adustus) attacking White-backed Vultures (Gyps africanus) at kill, Okavango Delta, Botswana

Tony Heald / White-Backed Vulture (Gyps africanus) drying wings after rain. Etosha National Park, Namibia, January.

Sharon Heald / White-Backed Vulture (Gyps africanus) drying wings after rain, perched on a termite mound. Etosha National Park, Namibia, January.

Anup Shah / Marabou storks (Leptoptilos crumeniferus) and White-backed vulture (Gyps africanus) feeding on the carcass of an elephant - wide angle perspective. Masai Mara National Reserve, Kenya. September

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

Tui De Roy / Ruppell's Griffon (Gyps rueppellii) and White-backed Vulture (Gyps africanus) group, Solio Game Reserve, Kenya