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Bar-headed geese are considered "super birds," They actually fly OVER Mt. Everetts during their migration to and from Tibet. They have a special type of hemoglobin that absorbs oxygen very quickly when the birds are at high altitudes; as a result, they can extract more oxygen from each breath of rarefied air than other birds can. Once their blood is stoked with oxygen, it rushes through capillaries that penetrate particularly deep into their muscles. Thus energized, their wings flap with seemingly inexhaustible vigor.

Other migratory birds, without the superior flapping, respiratory, and circulatory power of the bar-headed goose, fly closer to the ground. Most Songbirds, for example, fly at between 500 and 2,000 feet, and most waterfowl stay between 200 and 4,000 feet.

Bar-headed geese are considered "super birds," They actually fly OVER Mt. Everetts during their migration to and from Tibet. They have a special type of hemoglobin that absorbs oxygen very quickly when the birds are at high altitudes; as a result, they can extract more oxygen from each breath of rarefied air than other birds can. Once their blood is stoked with oxygen, it rushes through capillaries that penetrate particularly deep into their muscles. Thus energized, their wings flap with seemingly inexhaustible vigor.

Other migratory birds, without the superior flapping, respiratory, and circulatory power of the bar-headed goose, fly closer to the ground. Most songbirds, for example, fly at between 500 and 2,000 feet, and most waterfowl stay between 200 and 4,000 feet.

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13y ago

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