Most birds fly below 200 meters, and some fly extremely high, all the way to the stratosphere.
The stratosphere, also known as the stratosphere, refers to an altitude of 8 to 50 k m. Birds that can fly to this area must not only have superb flight ability, but also resist thin air, but also withstand the erosion of harmful substances such as ozone, radioactive particles, and strong ultraviolet rays. So, don't worry about eating these animals, poisonous!
5, mountain crows
Flight altitude 8000 meters,
Mountain crows are a type of crow that likes to nest in high mountains and is rarely seen below 1,000 meters. But it is common in the mountains of 2000-3000 meters, from the Himalayas to the Alps. There have been climbers on Mount Everest who have seen mountain crows fly gracefully in front of their eyes.
2, swans
The altitude flown was 8200 meters, which was recorded by radar in Ireland.
Swans breed in the north of Eurasia and migrate to the Jiangnan region, thousands of miles away, in the fall. They are one of the best endurance birds in the world and can fly for months on end. When they are ready to move away, an elderly swan will chirp loudly, and after a while the surrounding swans will rise up in response. Then, they let go of the intransigence in front of them and flew to poetry and far away.
3, spotted goose
Flight altitude 8800 meters,
Before 2011, it was widely believed that the spotted goose was the highest flying bird in the world. Later studies found that they barely made it into the top three. After observation, most of the spotted geese stay at an altitude of 6000-7000 meters when migrating, and even if they cross the Himalayas, they will choose to fly low between valleys. At present, there is only one case of sightings of more than 8,000 meters, which was detected by the pilot of the aircraft.
2, Grey Crane
Flight altitude 10000 meters,
Every autumn grey cranes fly from the gradually colder Siberia to the warmer southern water towns. Compared to spotted geese, they fly at altitudes above 8,000 meters when they migrate, in order to avoid eagles ambushing them on the road.
1, black and white vultures
Flight altitude 11300 meters,
As the highest bird in the world, the black and white vulture not only flies high, but also has a pair of sharp eyes and a sharp nose, which they can easily find food tens of kilometers away. Every morning, the black and white vultures leave the nest, they first fly to a height of 10,000 meters, and then hover in the air at a speed of about 35 kilometers per hour, flying for 6-7 hours, searching for up to tens of thousands of square kilometers.