Bar-headed Goose
Anser indicus

Birds have a special respiratory system that allows them to take in more oxygen than other animals, which is an adaptation for flying. The highest flying bird, the bar-headed goose, has the best respiratory system of any bird. Each year, flocks of bar-headed geese fly over Mt. Everest, making the best use of what little oxygen remains at such high altitude.

Fact File

Length: 2.5 ft

Weight: 4 to 6.5 lbs

Habitat: Mountain rivers, lakes and grassy wetlands

Diet: Plants, crustaceans and invertebrates