Brazil's Spix Macaw. There is only one male left in the wind. Almost rare New Zealand's kakapo, of which there are only few pairs left. Endangered birds include several birds of prey, shot as pests by farmers and exotic birds, such as the flightless notornis, hunted by traders.
Img source: http://dinoanimals.pl/zwierzeta/kakapo-papuga-nocy/