Sparrows are very common birds in our country. As long as there is a place where humans live, they must be seen. Sparrows are also willing to be neighbors with humans. After all, where there are humans, there will be plenty of food.
We can often see a lot of sparrows flying to the ground for food. If you look closely, you will find that they move on the ground, not like pigeons, walking on two legs, but flexible Jumping around, can't the sparrow walk?
Why doesn't the sparrow walk?
There is no need to walk
An important reason is that sparrows do not need to walk.
First of all, sparrows, like most birds, have the characteristics of timidity. Once there is wind and grass, they will take off. The walking motion is not suitable for sparrows to take off. On the contrary, the jumping motion with legs together is more suitable for them. Flying up, eliminating the need to close your legs. Therefore, from the perspective of avoiding danger, jumping is more reliable than walking.
Secondly, sparrows have different living habits from most birds. They are social animals, and their food is very dependent on humans, so most of the time, they fly in groups. Come to the ground for food, and the food on the ground is limited, then it is very important to grab food. Compared with walking and jumping, it is obvious that jumping is faster and can get food first. Therefore, from the perspective of foraging, jumping is more reliable than walking.
body structure is determined
The joint between the shin bone of the sparrow and the tarsal bone of cannot be bent. If we look closely, we can see that the short legs of the sparrow are straight and it is very inconvenient to walk. Moreover, the feet of the sparrow are too small, and it is hard to support his body. Therefore, the sparrow chose to jump instead of walking.
In the final analysis,This is the result of the biological evolution of sparrows, because jumping is more conducive to the survival of sparrows. In order to avoid danger and grab food, long-term skipping foraging leads to changes in the structure of the legs, and the inconvenience of walking caused by the changes in the structure of the legs, in turn, promotes the jumping activities of the sparrow.
Sparrow is a national secondary protected animal of
Sparrow is Finch The general name of 27 small birds of the genus Sparrow, their size and body color are very similar, generally brown and black. Variegated, so it is commonly known as sparrows.
In the early days of the founding of the People’s Republic of China, the country was full of wastes waiting to be rejuvenated. People’s living conditions were very difficult and could not solve the problem of food and clothing. As an important natural enemy of food crops, sparrows were listed as one of the four hazards of . Due to long-term hunting, the number of sparrows has drastically decreased.
As people's living conditions continue to improve, and the number of sparrows continues to decrease, people begin to reexamine sparrows. Scientists have discovered that sparrows are omnivorous animals. They mainly feed on the seeds of gramineous plants in summer and autumn. During the brooding period, they mainly feed on insects that harm gramineous plants, most of which are lepidopteran pests.
All native wild species have their ecological value. Whether they are beneficial or harmful is mainly defined by humans from their own perspective. From the perspective of the development level of modern agriculture, it is no longer necessary to list sparrows as the four pests. On the contrary, we must protect them from the perspective of protecting wild animals and maintaining ecological balance. Because of this, the sparrow is listed as a second-level national protected animal.
With the prohibition of the killing of sparrows and the protective measures adopted, the sparrows have been able to recuperate and their numbers have increased dramatically. This is also due to the strong reproduction ability of sparrows and the protection of young birds .
Sparrows are brave and spiritual
Sparrows are very brave,And a small animal with spirituality. I remember that there was a text in elementary school Chinese when I was young. It was about a sparrow mother fighting with a hunting dog in order to save a young bird, which fully embodies the sparrow's bravery and love.
Many people think that among birds, parrots are relatives, while sparrows are afraid of people and cannot feed them at all. In fact, the spirituality of the native sparrow is not lost to the parrot at all. There have been news reports that after a sparrow was rescued by humans, he became the best friend of the sparrow. Wherever he goes, the sparrow will go with him, and he will not leave every step of the way.
As long as you establish a relationship with the sparrow and gain its trust, the sparrow is also very spiritual, and it will become your good friend.
In addition, it should be emphasized that you must not catch sparrows. Even though sparrow meat is very delicious, they are the second-class national protected animals.
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