Excerpt: Additionally, bar-headed geese hug the terrain as they fly over the Himalayas, taking advantage of the relatively more oxygen-rich air over valleys. 7

Excerpt: Additionally, bar-headed geese hug the terrain as they fly over the Himalayas, taking advantage of the relatively more oxygen-rich air over valleys. 7% effective oxygen(~21% @sea-level). https://www.the-scientist.com/news-opinion/bar-headed-geese-slow-their-metabolism-to-soar-over-everest-66386 https://www.the-scientist.com/news-opinion/bar-headed-geese-...