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 condors (Gymnnogyps californicus) interacting. Captive. Endangered species.

Ben Hall / Andean condor (Vultur gryphus) in flight over mountain peaks, Torres Del Paine National park, Chile.

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.

David Fleetham / Andean Condor (Vultur gryphus) feeding on a bone at Parque Condor, a reserve for rescued birds of prey near Otavalo, Ecuador, South America.

David Fleetham / Close up head profile of Andean Condor (Vultur gryphus) at Parque Condor, a reserve for rescued birds of prey near Otavalo, Ecuador, South America.

Gabriel Rojo / Andean condors (Vultur gryphus) in flight, Torres del Paine National Park, Chile