Abstract
Bar-headed geese lower their flight metabolic rates to fly in low-oxygen conditions.
Highlights
Related research article Meir JU, York JM, Chua B, Jardine W, Hawkes LA, Milsom WK. 2019
M ost animals live at low altitudes, where the atmosphere is rich in oxygen, and humans often gasp for air at higher elevations due to the reduced oxygen levels
Mountaineers have reported seeing bar-headed geese flying at altitudes above 8,000 meters, where the partial pressure of oxygen is less than half of that at sea level
Summary
Related research article Meir JU, York JM, Chua B, Jardine W, Hawkes LA, Milsom WK. 2019. The most incredible feat of bird flight is perhaps the bi-annual migration of bar-headed geese, which cross the Himalayas at altitudes usually between 5,000 and 6,000 meters. Mountaineers have reported seeing bar-headed geese flying at altitudes above 8,000 meters, where the partial pressure of oxygen is less than half of that at sea level.
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