One of the rarest birds of all is New Zealand's kakapo. The above picture of the large, flightless bird approaching the camera snagged first place in the "critically endangered or extinct in the wild" category.
Only 124 animals remain in the wild—the species has been largely wiped out by introduced predatory mammals such as feral cats.
Named a second place winner in the "endangered or data-deficient" category, the above picture shows a red-crowned crane making a courtship display.
Though the bird's population is stable in Japan, the mainland Asian population is declining due to habitat loss and degradation of wetlands for agriculture and development, according to BirdLife International.