Why do birds fly high in the sky?

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. Various species of birds have great differences in their wings, 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; And human bones account for 18 percent of body weightDue 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.

1. The body of birds is streamlined, the body surface is covered with feathers, the forelimbs become wings, the bones are light, thin and strong, the chest muscles are developed, and there are air sacs to assist lung breathing.

2. The bones are light in weight and hard in texture, with a towering keel protrusion on the chest, and there is a gas-filled cavity in the middle of the bone.

3. The chest is muscular, and the back muscles are degenerate, which is conducive to pulling the wings.

4. The nervous system and sensory organs are very developed. The heart has four chambers, the number of beats is fast, and the circulatory system is perfect.

5. There are well-developed air sacs, which can not only reduce weight but also form a unique double breathing with the lungs to meet the needs of oxygen and energy consumption when birds fly.

6. Birds have a perfect dual circulation system, and oxygen-rich blood is completely separated from hypoxic blood to ensure the demand for oxygen for flight.

7. Large amount of food and fast digestion. The rectum is short and thick, and feces cannot be stored, so frequent bowel movements, the bladder of birds disappears, and urine is excreted with feces, which is conducive to reducing the burden during flight.

8. In short, birds are a class of animals with feathers on the body surface, forelimbs specialized into wings, the ability to fly quickly, air sacs inside, and high and constant body temperature.

Birds rely on their wings to fly in the air. The wings of a small bird are made up of feathers and bones, and they can create lift and thrust by vibrating their wings. When a bird vibrates its wings, the air is compressed and accelerated, creating an upward force, which is lift.

At the same time, the bird can also generate forward thrust through the movement of its wings, which helps the bird to fly in the air.

Birds rely on their body structure to fly in the air. The body of the bird is very light, and their bones and feathers are very thin, which helps to reduce the weight of the bird when it is in the air. In addition, the bird's body is also very aerodynamic, which helps to reduce air resistance and makes it easier for the bird to fly in the air.

Birds rely on their flying skills to fly in the air. Birds can adjust their flight altitude and direction by changing the position and angle of their wings. In addition, the bird can also use air currents and updrafts to increase its altitude and extend its flight time.

Vertical excavation. <> In short, there are many principles for a bird to fly in the air, including the lift and thrust of the wings, the lightness and aerodynamics of the body structure, and the use of flight skills. These factors work together to allow the bird to fly freely in the air.

Birds can fly around in the air in two ways: flapping wings and gliding.

1. Flap the wings to fly.

Wing flapping is a basic way of flying for small birds, and by flapping the wings up and down, the bird can freely control its body to rise or proceed. This pure imitation flight method can be divided into two stages: lifting the wings up and flapping the wings down.

When lifted upwards, the wings bend and the feathers spread out to form many gaps, through which the air above the wings can flow downward, making it easier for birds to flapp their wings.

When the next shot is taken, the wings are straightened and the feathers are brought together to compress the air backwards and downwards. At this time, the air provides an upward lift and a forward thrust to the bird, and with the combination of the two, the bird can fly upwards or forwards quickly.

2. Gliding flight.

Small birds can also fly in the air by gliding flights. Gliding is when birds use air convection or wind to fly leisurely in the air. This type of flight does not require the flapping of wings, so it is also called "free flight".

Different birds have different gliding effects.

For example, some birds can fly in the air for long periods of time, while others can only glide short distances. Small birds usually glide long distances with the help of the wind, such as roc and seagulls. In short, birds can fly around in the air through two ways: flapping wings and gliding, both of which are unique skills that birds have evolved over the course of their evolution.

The birds flying in the sky are as follows:

1. The sky is cloudless. There were two yellow birds flying in the blue sky, there were many houses in the distance, the green grass was blooming with colorful flowers, and a small river was winding towards the village.

2. There is a flock of colorful birds flying high in the sky.

3. Flocks of colorful birds are flying in the beautiful sky.

4. There is a free bird flying in the blue sky.

5. In the endless sky with a look, there is a flock of birds flying around.

6. There was a flock of squeaky birds flying in the sky, singing songs I didn't understand.

7. In the vast sky, there are happy birds flying, falling on the branches and chirping.

8. Cute birds are flying in the blue sky, and cute birds are chirping and singing joyful songs.

9. The ground is covered with rolling green grass, and the chirping birds in the sky seem to say: Spring is coming, spring is coming.