Dayan information

Wild goose is a national second-class protected animal.

Wild geese, also known as wild geese, swans and large migratory birds, are national second-class protected animals. Wild geese are full of enthusiasm, can inspire their companions, and encourage their flying companions with calls.

It is understood that goose meat is low in fat, cholesterol and protein. More than ten pharmacopoeias, such as Qianjin Shi Zhi and Compendium of Materia Medica, have recorded goose meat in detail: it is sweet in taste, flat in nature, enters the meridians, lungs, kidneys and liver, dispels wind and cold, strengthens bones and muscles, and benefits Yiyang's qi. It is understood that goose down is warm, very light and soft, and can be used as a filling material for pillows, cushions, clothes, bedding and so on. Harder feathers can be processed into fans and handicrafts.

These geese fly in herringbone or zigzag, because they fly all day. It is not enough to rely on the strength of a goose. They must help each other to fly fast and far. When powerful geese flap their wings, a gust of wind blows from the tip of their wings, and when they are sent from bottom to top, they are gently lifted up so that they will not fall behind after a long journey.

Generally, the geese in front are very powerful and experienced. Because the head geese flap their wings to drive the airflow, if they fly in a herringbone or zigzag way, the geese behind them will fly easily without taking many breaks. A low-pressure area will be formed behind the head geese during the flight, and the geese that follow can use this low-pressure area to reduce the air resistance during the flight. It is beneficial to the continuous flight ability of the whole group.

The same principle also exists in track and field sports. In the middle and long distance race, some experienced athletes will not run the first place at first, but after running one, because the air resistance to him will be smaller than the first place. It's also easier to run.

These geese fly in flocks.

Gus is an excellent air traveler. Every autumn and winter, they fly in droves from their hometown Siberia to the south of China for the winter. The following spring, after a long journey, they returned to Siberia to lay eggs and breed. The flying speed of geese is very fast, which can fly 68 ~ 90 kilometers per hour, and the long distance of thousands of kilometers is only one or two months.

During the long journey, these geese were well organized. They are usually arranged in herringbone or zigzag. When they fly, they keep making "honk, honk" calls. This cry of geese plays a signal role of caring for each other, calling, taking off and stopping.

Then, what is the purpose of keeping the geese in strict and neat formation, that is, the shape of "human" or "one"?

It turns out that this kind of team is very labor-saving to fly. When the geese in front flap their wings a few times, there will be an updraft, and the geese in the back will follow. You can use this airflow to fly faster and with less effort. In this way, one after another, geese naturally form a neat "human" shape or a "one" shape.

In addition, the neat herringbone or zigzag arrangement of geese is also a manifestation of herd instinct. Because it is conducive to defending against enemy damage. Goose is always "captain" by experienced old geese, flying in front of the team. During the flight, the leading geese are physically exhausted, so they often exchange positions with other geese. Young birds and weak birds are mostly inserted in the middle of the team. An experienced old goose always acts as a sentry when stopping by the water to look for aquatic plants. If the lone goose flies south, it is in danger of being eaten by the enemy.

Scientists have found that flying geese in a row can reduce the air resistance of geese behind them. This encourages athletes to stay close behind the leading runners in the long-distance race.

Goose belongs to the family Anatidae, which is the general name of various goose subfamilies and is a large-scale swimming bird. The shape is slightly like a domestic goose, and some are smaller. The mouth is wide and thick, the mouth nail is wide, and there are blunt comb-like protrusions on the meshing edge. Male and female feathers are similar in color, mostly grayish brown with stripes. Wild geese live in groups near the water, usually thousands. During the night, the geese are on the alert around and will call the police if they are attacked. The staple food is tender leaves, fine roots and seeds, and occasionally pecking at farmland grains. Fly back to the north to breed after the vernal equinox every year, and fly to the south for winter after the autumnal equinox. Flocks of geese fly in a straight line or herringbone, which is called "Goose Word". Because the team is neat, people call it "strict array" The flight path of geese is straight. The common geese in China are Hongyan, Douyan and White Goose. The Goose Team consists of 6 or multiples of 6. The geese are a group of families, or a group of families.