David Perpinan / Group of Griffon vultures (Gyps fulvus) fighting to feed on a dead lamb. Cuenca, Spain, August.

David Perpinan / Group of Griffon vultures (Gyps fulvus) arriving and feeding on a dead lamb, Cuenca, Spain, August.

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

Francisco Marquez / Griffon vultures (Gyps fulvus) and European black vultures (Aegypius monachus) feeding on a dead deer, Cabaneros National Park, Montes de Toledo, Spain, May.

Francisco Marquez / Juvenile Lammergeier (Gypaetus barbatus) feeding on a bone in snow, Ordesa y Monte Perdido National Park, Spain, April.

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

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

Nick Gordon / Black vultures (Coragyps atratus) scavenging on rubbish tip, Brazil