Feathered conquerors of Everest: scientists have studied an unusual feature of geese

Over the highest peaks of the world, in particular over Everest, the air is very discharged. Therefore, climbers' testimonies about birds flying there have long been considered only a deception. But scientists still proved that some individuals can fly even in such harsh conditions.

In 1953, one of the climbers trying to conquer Everest, reported that he saw Anser indicus over the top of geese. The altitude of their flight, according to his words, was 9 km. It was 2 km higher than the maximum maximum for any other creature known to science at that time. But in 2019, scientists still proved that this is possible.

A team of scientists conducted an unusual experiment. A goslings brood was trained to fly in a wind tunnel. Moreover, each of them was wearing a small backpack and a mask. During a stay in the pipe, scientists recorded their vital signs with the help of special sensors.

Researchers were primarily interested in heart rate, oxygen level in the blood, body temperature and metabolic rate. Moreover, these indicators were shot depending on the level of height that was artificially created in the wind tunnel.

The experiments showed that at the lowest level - for example, 7% on the top of Mount Everest versus 21% at sea level - heart rate, wing flap frequency and metabolic rate remained at the same level. The birds managed in some strange way to cool their blood so that it could consume more oxygen.

But, despite the impressive preparation of the brood of geese, in such harsh conditions they could be only a few minutes.
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