How can a bird fly? Why do birds fly?

Because the upper end of the bird's wings is arc-shaped, the air flow velocity is large, the pressure is small, and the atmospheric pressure at the lower end of the wings is greater than the atmospheric pressure at the upper end, so the bird is held in the air.

The wings of birds are the first condition for them to have flying skills. Under the same conditions of having wings, some birds can fly very high, very quickly, very far; Some birds can only hover, glide, or even fly at all. It can be seen that just wings have a lot of knowledge.

The structure of a bird's wings is no less complex than the bird itself. If the feathers of the bird's wings are constructed, the principle of aerodynamics can be skillfully applied, and when they are fanning up and down or pressing up and down, they can push the air and fly forward using the principle of reaction; The structure of the feathers is reasonable, which can effectively reduce the air resistance encountered during flight, and some can also play a role in de-trembling and noise reduction. There are great differences in the wings of various species of birds, so that the difference in wings alone creates many excellent and average "pilots".

Some of the country's second-class protected animals have males weighing more than 14 kilograms, with a body length of 120 centimeters and a wingspan length of 240 centimeters.

For another example, the ** bird with a wingspan of meters, which usually flies at sea 160 kilometers off the coast, is a first-class protected animal in China.

After reading the previous content, some people may ask, can you fly just by wings? No, it's the special bones that send birds to the skies. Bird bones are excellent "lightweight materials", hollow and lightweight.

According to the analysis, the bird bone accounts for only 5 6 of the bird's body weight; Human bones account for 18 of body weight. Due to the light bones, the wings are very easy to drive, and there are many air sacs connected to the lungs in the bird's body, which is very beneficial for weight loss and buoyancy.

These favorable conditions undoubtedly give the birds the ability to fly, allowing them to perform their skills in another living space. However, I think there may be other reasons why birds can fly into the blue sky, but humans have not discovered it until now.

From the understanding of the abilities of birds, we can see that exploring the abilities of birds will help humanity to open up new territories.

Birds can fly for the following reasons:1. Birds fly by wings, not only to have wings but also to have developed muscles in the chest, which can pull the wing bones to carry out strong movement, so that the wings are flapped and the power of flight is generated.

2. Birds flapping their wings can not only make their bodies rise into the air, but also make them move forward and land smoothly.

3. The body of the bird is relatively light, the bones are very slender, and most of the bones are filled with air. Such a skeletal structure provides superior conditions for flight.

You're stupid, of course he can fly if he has a pair of wings, and he can fly because he is small.

Birds have wings, and they rely on air heat convection when they fly.