How Excessive Birds Fly II

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Bar-headed Geese, champions of high-altitude migration, depart their nesting grounds in Tibet and scale the Himalayan vary on their strategy to wintering grounds within the lowlands of India. How do they do it? These geese have a respiratory construction that extracts oxygen from skinny air, even at 30,000 toes. Inhaled air passes by means of the lungs and is quickly saved in a number of sacs, then circulated again by means of the lungs. The capillaries of their breast muscle tissues are extra quite a few than in different birds, offering the muscle tissues with a higher provide of oxygen.

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How Excessive Birds Fly, Half II

Written by Frances Wooden

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[Sounds of wind]

Proper now a flock of Bar-headed Geese could possibly be flying over Mt. Everest. These champions of high-altitude migration depart their nesting grounds in Tibet and scale the Himalayan vary on their strategy to wintering grounds within the lowlands of India. With the assistance of tailwinds, they will cowl the thousand-mile journey in a single day.
[Call of the Bar-headed Goose]
How do these gray-bodied, five-pound geese with zebra-striped heads breathe at such excessive altitudes, since pilots and lots of mountain climbers want oxygen at half that altitude? Like different birds, the geese have a novel respiratory construction tailored to extract oxygen from skinny air, even at 30,000 toes. After inhaled air passes by means of the lungs, it’s quickly saved in a number of sacs, then circulated again by means of the lungs extracting nonetheless extra oxygen.
[Repeat flock of Bar-headed Geese in flight]
The Bar-headed Geese even have a particular kind of hemoglobin, which helps their our bodies take up oxygen shortly at excessive altitudes. And the capillaries of their breast muscle tissues are extra quite a few than in different birds, offering the muscle tissues with a higher provide of oxygen.
Scientists are learning the physiology of those high-flying Bar-headed Geese to search for methods to assist individuals address altitude and respiratory ailments.
There’s at all times extra to the story at BirdNote.org.
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Name of the Bar-headed Goose offered by The Macaulay Library of Pure Sounds on the Cornell Lab of Ornithology, Ithaca, New York. Recorded by A.L. Priori.
Producer: John Kessler
Govt Producer: Chris Peterson
© 2014 Tune In to Nature.org   September 2016/2019  / August 2022 Narrator: Mary McCann

ID#092505highIIKPLU         flight-02b        flight-02b-2009-09-02-MM

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