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On the fly ...

Bar-headed geese returning to roost in the twilight.

 

Trivia

A mid-sized goose, they nest mainly in Mongolia and China - the Tibetan Plateau, but winter in India.

They are ranked as the highest consistent fliers among all the bird species. On their annual migration over the Himalayas,

Bar-headed geese have been seen flying well above the peak of Mt. Everest (29000+ ft).

Scientists have found that their blood cells contain a special type of hemoglobin which absorbs oxygen very quickly at high altitudes plus their capillaries extend especially deeply into their muscles, improving the transfer of oxygen to their muscle fibers.

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Uploaded on October 6, 2020
Taken on February 5, 2020