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.

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

Claudio Contreras / California condor (Gymnogyps californianus) group feeding on carrion at feeding site, California condor recovery program. Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico. 2...

Claudio Contreras / California condor (Gymnogyps californianus) in flight, wings radio tagged. California condor recovery program, Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico. 2011.

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

David Pike / Andean condor, (Vultur gryphus) in flight, Farellones, Chile.

JIM CLARE / Turkey vultures (Cathartes aura) feeding on dead sealion. Punta San Juan Reserve, (Reserva Nacional de Islas, Islotes y Puntas Guaneras) Peru.

John Chan / Turkey vultures (Cathartes aura) scavenging on a carcass on a beach Southern California, USA.

Melvin Grey / Black vultures (Coragyps atratus) in heavy rain, Costa Rica. Medium repro only

Alex Hyde / Black Vultures (Coragyps atratus) scavenging carcass of a Bush Dog (Speothos venaticus) on the banks of the Manu River, Manu Biosphere Reserve, Amazonia, Peru. November.

David Tipling / Griffon (Gyps fulvus) and Black vultures (Coragyps atratus) fighting over food Sierra San Pedro, Extremadura, Spain. December