Markus Varesvuo / Egyptian vulture (Neophron percnopterus) in flight, Oman, November

Claudio Contreras / California condor (Gymnogyps californianus), portrait. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Claudio Contreras / California condor (Gymnogyps californianus), two peched in tree, adult and juvenile. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

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.

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.

Gerrit Vyn / Mature male California Condor (Gymnogyps californianus) used for the captive breeding program to restore this critically endangered species. Idaho. February.

David Kjaer / Griffon vulture (Gyps fulvus) coming in to land, Spain, July

David Kjaer / Bearded vulture (Gypaetus barbatus)) coming in to land, Spain, July

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

David Pattyn / Bearded vulture (Gypaetus barbatus) flying, Leukerbad, Valais, Switzerland, February

Staffan Widstrand / Eurasian griffon vulture (Gyps fulvus) blurred motion photograph at wildlife watching and vulture feeding site, Pre-Pyrenees, Catalonia, Spain, March.