What are the characteristics of Swift?

Swift can be regarded as the champion of long-distance flight among birds. There are actually three kinds of common swift, Beijing Swift, White Waist Swift and Small White Waist Swift. The most common is Beijing Swift, also known as Louyan and Yeyan. Whenever the spring is warm, Swift will migrate back from Australia, India and East Africa. In the process of migration, their flying speed can reach 1 10- 190 kilometers per hour, which is worthy of the title of flight champion.

Swift's feathers are not gorgeous, but dark brown, but they have a perfect streamlined shape and developed flying muscles. Their wings are thin and long, bending back like two sickles. Swift has superb flying skills, and likes to fly and chase in groups at the edge of tall buildings, preying on flying insects. Especially before the storm, Swift often performs ultra-low altitude flight performances, and the flight vector flies over the ground, which becomes a sign of weather changes.

Swifts often gather in places with updrafts to fly when they are foraging or courting. They are very sensitive to the rise of air and can detect the existence of lift. So it can be said that Swift is the smallest bird that can soar.

Swift has such superb flying skills, but its feet are too weak to run and jump on the ground. Swift's four toes on each foot stretch forward. It can't master tree skills like other birds. It can only hook the wall or rock wall like a hook and hang its body. Swift's weak feet can't help take off at all. If you want to fly, you can only spread your wings and fly when you fall from a height. Once you accidentally fall to the ground, it is difficult to take off again.

Peregrine falcons are slightly larger than pigeons, and they are larger individuals among all kinds of falcons. Peregrine falcon is a very beautiful bird, its face flies freely in the dark quickly, and its back neck has short and wide black stripes with blue luster; Blue-black back, white abdomen, with a little light brown; A pair of big and bright eyes, a gray-blue mouth, a pair of orange feet and black claws make it look mighty and handsome.

Peregrine falcons like to be alone and often move in relatively open areas, such as farmland, river valleys and grasslands. And rarely go to a large area of dense forests, which is conducive to exerting its extraordinary flying skills in these areas.

According to records, the flying speed of peregrine falcon can reach 140 km per hour, and it can reach 360 km per hour when diving to catch prey. An American pilot used to fly a plane at a speed of 250 kilometers per hour, but he was overtaken by a fast-flying peregrine falcon. This shows how amazing the flying speed of peregrine falcons is. Really worthy of being a "fighter" among birds.

Peregrine falcons mainly prey on birds, and sometimes eat some mice, rabbits and so on. When peregrine falcons meet their prey, they will catch up, fly above it, then dive down and hit it hard with their feet. Peregrine falcons strike quickly and forcefully. Many birds will be knocked unconscious and fall to the ground. Peregrine falcons will catch their prey again, peck off its neck with their mouths, or puncture the blood vessels in its neck and let it bleed to death. Peregrine falcons then unhurriedly peel off their feathers and tear the meat into small pieces to swallow. When encountering difficult prey, peregrine falcons will launch fierce attacks on the prey again and again until the prey is killed.

Peregrine falcon is also called "Hu Ya" in the north, because it often preys on wild ducks, such as needle-tailed ducks, red-necked ducks and mallard ducks. Even pheasants, which are much bigger than peregrine falcons, often become a good meal for them.