Why does the bird fly south and always maintain a human line?

During the journey, the movements of the flock of geese are very regular, most of them are led by experienced old geese, leading the team in the front, and the rest fly in a "zigzag" or "herringbone" formation in the back. They are flying and calling, often making a non-stop cry of "Yihe, Yihe".

Why do the geese always fly in a "zigzag" or "herringbone" formation? This is because geese fly long distances, and in addition to flapping their wings, they often use updrafts to glide in the sky, so that their wings can rest intermittently and save their physical strength. When the flock of geese flies, the wings of the geese in front of them cross the air, and a faint updraft will be generated on the tip of the wing, and the geese behind will fly closely behind the tip of the front goose in order to take advantage of this air flow, so that one follows the other, and they form a neat line.

Wild geese fly all the way from the north, through thousands of mountains and rivers, and after about a month or two of long-distance air travel, they reach the tropical region with warm winds and warm days. There they are able to find abundant food and escape the cold of the north, while the females and males begin to mate. By the time spring comes, the female goose has already given birth to mature eggs, so she flies back to the north to lay eggs, hold nests, and nurse her offspring.

What are the benefits of flying in such a formation? This is because the geese flying in formation can skillfully use the updraft, the geese flying in front of them use their wings to agitate to produce a weak updraft, and the geese behind use the momentum of this air flow, one follows the other, naturally arranged in a relatively neat team, the more geese the number of geese, the smaller the spacing, the more labor-saving, flying in the front of the team is the experienced, healthy old geese, the first few geese often take turns to play the vanguard, because the head goose is the most strenuous and the middle goose and the tail goose benefit differently,

The formation is because the birds in the back can use the vortex generated by the birds in front of them to gain additional lift and thrust, so the birds that start the first are generally the more robust in the flock, and some species of birds often change the head birds, so that the head birds are not too tired.

Scientists have recently found that migratory birds are able to fly non-stop because they are well fed and arranged in a V-shape.

Researchers at Lund University in Sweden examined the relationship between the amount of food and the effect from a metabolic point of view and found that birds are able to fly more efficiently when they store large amounts of food in their bodies. Before making a long flight, birds can double their weight, but instead of not being unable to fly, they can fly better and farther.

French scientists explain why birds often use a V-shaped formation when migrating long distances: it saves them a lot of energy. Birds in this formation have a lower pulse and flap frequency than birds flying alone.

"From the results of our study, one can empirically conclude that flying in a group is aerodynamically superior to flying alone at similar flight speeds, and it allows birds to reduce energy expenditure," said Henri Wimoscoci of the French National Center for Scientific Research.

The bird flies south, or the bird flies south. Gone, but will be back!

The herringbone has 3 in front and 5 in the back.

Draw a picture and you will understand, Yan Yan.

Wild goose wild goose. Wild goose, wild goose.

Wild goose, wild goose. Wild goose, wild goose.

Wild goose, wild goose.

1. The car should be filled with fuel ......The plane should be refueled ......

2. Yes, the V-shaped shape saves energy.

3. They will take advantage of the updraft, just like a glider, relying purely on the reaction force of the wings flapping the air without exhausting ......

Situ Lanfang - The phoenix spreads its wings.

lyrics and songs; Zhang Shan.

Singing; Situ Lanfang.

The phoenix is flying south, and the clouds are following.

Listen to the mountains and rivers How beautiful paradise is.

Spread your wings and wave your dreams.

The sky is high and the birds fly, and the scenery is intoxicating.

I want the blue sky to be my backrest.

The white clouds are the stamens scattered under my feet.

A horse Pingchuan saw the evening breeze blowing.

The world is going around and don't pay attention to it.

The teenager doesn't know the taste of homesickness.

The farther away from home, the more precious I feel about love words.

A familiar voice came from his ears.

Accompany me on one journey after another.

The phoenix is flying south, and the clouds are following.

Listen to the mountains and rivers How beautiful paradise is.

Spread your wings and wave your dreams.

The sky is high and the birds fly, and I am intoxicated by the scenery.

I want the blue sky to be my backrest.

The white clouds are the stamens scattered under my feet.

A horse Pingchuan saw the evening breeze blowing.

The world is going around and don't pay attention to it.

The teenager doesn't know the taste of homesickness.

The farther away from home, the more precious I feel about love words.

A familiar voice came to my ears.

Accompany me on one journey after another.

The phoenix is flying south, and the clouds are following.

Listen to the mountains and rivers How beautiful paradise is.

Spread your wings and wave your dreams.

The sky is high and the birds fly, and I am intoxicated by the scenery.

The phoenix is flying south, and the clouds are following.

Listen to the mountains and rivers How beautiful paradise is.

Spread your wings and wave your dreams, and the gods are around.

The sky is high and the birds fly, and I am intoxicated by the scenery.

The phoenix is flying south, and the clouds are following.

Listen to the mountains and rivers How beautiful paradise is.

Spread your wings and wave your dreams.

The sky is high and the birds fly, and I am intoxicated by the scenery.

I don't know if this is what I'm looking for, but unfortunately it's not a red bird, it's a phoenix, I hope it can help you

If you just hear it, I think it's "The Bird Flies South".

Are you sure whether it is the red bird flying south or the late phoenix flying south If the phoenix is flying south, it will be Situ Liquid Sales Li Lanfang's "Phoenix Spreading Its Wings" You see if it is a fight I hope it will help you.

In addition to wings, birds are able to fly freely because they have a series of body structures that are adapted to fly. The bones are very light, but very strong.