Swallows not only breed every year, but also twice a year, why is the number decreasing?

Although swallows breed every year, and the number of reproductions is as high as twice, the number of swallows continues to decrease. The reason for this situation is that when swallows reach a certain season, they will show the phenomenon of migration. There will also be competition between some species.

There will be natural predators to restrain the growth of swallows. I see that many people have a strong concept of protecting small animals in their lives. <>

In fact, swallows, like humans, must consume appropriate food in order to thrive. But nowadays, many farmers spray a lot of pesticides when planting crops. In this way, the swallow's food will be contaminated, so the swallow will choose to change places.

However, for some old, weak, sick and disabled swallows, in the process of long-term flight, it is likely that there will be physical overdraft and poor physical strength, which will also lose their lives. <>

And the most common nesting place for swallows is people's eaves, roofs, or branches, for some ignorant children, they may use the toy slingshot in their hands to catapult swallows. Although in their eyes, they may think that this practice is more fun and interesting, but for the swallow, it may cause great harm. If you don't pay attention, you will lose your life.

And between each species, there will be a trend of biological chains, with the lowest and highest levels. Therefore, in the process of growth, the existence of swallows will also be greatly threatened. <>

Small swallows are caught by eagles, vultures, magpies, etc., while flying or searching for food. And the stray little wild cats will also hunt and kill the little swallows at any time. In this way, the number of swallows will also slowly decrease.

And in life, there are many types of birds, for example, the biggest competitor of swallows is sparrows. Because sparrows are relatively small, they can attack swallows in groups. The swallow is relatively large and can only form a flock of two or three, so in terms of power, it will be weakened.

Because their survival rate is relatively low, and the number of eggs is relatively small, they are likely to hatch only 2 or 3 eggs at a time.

It is due to the fact that the survival ability of this animal is not particularly strong, so although the reproductive ability is relatively strong, the number will still decrease.

Ten or twenty years ago, most of the swallows would go to the eaves of rural houses to build their nests, but now urbanization, many people in the village have gone to live in the city, and the old houses have been demolished, and the forests are becoming less and less, and there are not many swallows.

Good things, it means that your family will add two happy events to the marriage of your children.

It's 2019 in the 21st century, and the swallow just thinks that your house is suitable for nesting under the eaves, which is a natural phenomenon, and there is nothing else special to imply.

Swallows are a kind of picky birds, and if you breed two nests of small swallows in a row in your house, it means that the environment of your home is better, and the hygiene of your home is also clean.

That's a good thing.

Hello, you said that the swallows have bred two litters in a row in your house, and the little swallows have not flown away yet. Do you want to know if that's a good thing? Actually, this is a very good thing.

Because there is a folk saying that swallows don't worry, that is, where does the swallow build a nest? Considered. He usually builds a nest in a better house and then there.

Reproduction. This little swallow has already bred two litters in a row in your house. Swallow.

If he hasn't flown away yet, it proves that he likes your home very much, and he likes this nest on the edge of your house. So this is a good thing for your family. Swallow, being able to go to your house means that your family is prosperous.

It's good in every way. So it's a good thing.

Swallows, in your home. Two litters of baby swallows have been bred in a row, which means that the swallows have been in your house for a long time. Neither did you any harm to him.

That's why he's always been here. But the swallow will go when it is cold in winter. Because he was looking for a warm place to spend the winter.

So he's going to go, too. But after leaving, don't damage his little nest, he will come again for the New Year. Because Yanzi, she seems to have a memory, and he will come to this again, and I will go to your house and reproduce with you.

So. Even if he's not here, don't touch his nest when he's gone. Because its nest is still very good, how nice it is to bring him to fly around your house during the New Year.

And. I've heard about it. It is a good thing for swallows to reproduce in whose house.

So you can't even destroy its nest.

Now many of us know about animal love. It is also known that animals and people live in peace. This is the need for environmental protection.

So we coexist peacefully with the swallows. It is very much. Joyful because you see swallows flying around in your house every day.

You usually want to raise an animal, but it's not good to raise this, he takes the initiative to fly around your house, and he also reproduces. So you feel it every time you see it. Heart.

I'm so happy. I think so, because in the past, I had been in my house, and this little swallow watched it fly around every day, as if it had something to do. One day it was said that the weather was not too good.

So when you close the door outside, you have to see if he's there? Or see if he can influence her because I'm in the house, she's in the house? Stayed in a room.

That was many years ago, and I lived with her, so I loved her very much, and always has been. Put it in the house often. I'll have to wait when he doesn't come back.

Wait until he returns. So in those years, my family was quite smooth and good. I still have swallows.

Very good review.

Swallows will breed all the time in the breeding grounds.

Yes, Yan Hunger Boy especially remembers his family.

Swallows are migratory birds, and every year when winter is approaching, they fly south to spend the winter.

If the swallow can return to the south, it will still return to its previous nest.

In addition, the nest of swallows is often invaded by sparrows, and many swallows come back from the south and find that there are sparrows living in the nest, so they can only find another place to build their nests.

The time for swallows to return to their nests is in spring. There were no accidents during the winter, and the following spring it returned to its old nest.

Jiayan also has an amazing memory, no matter how far they fly, even if they are separated by thousands of mountains and rivers, they can rely on their amazing memory to return to their hometown.

According to the statistics of foreign biologists, the proportion of old swallows returning to the nest is close to 1 2, and the proportion of young swallows returning to the old nest in the first year is 1 6.

In the autumn before winter comes, swallows make their annual long journeys – flying in flocks from the north to the far south, where they enjoy the warm sunshine and humid weather.

<> in the early summer season in the south, you will find one cute animal coming back, and that is the swallow. The swallow is an animal that migrates north and south, likes warm places, and a major task every time it comes back is to reproduce, so how many times a year will the swallow breed? Swallows usually breed once a year, and the breeding time is from April to July, because the weather is very warm during this period from April to July, and there is plenty of food**, ordinary swallows will use the eaves of the farmhouse to make a nest, so that they can also hide from the rain.

The construction material of the swallow's nest is mainly moist soil mixed with the saliva of the swallow, and the soil with saliva can strengthen the toughness of the nest.

The swallows will come back the next year after nesting, and the swallows will remember their homes.

Swallow is a collective name for 74 species of birds in the passerine family Swift family. The shape is small, the wing tips are narrow, the tail is concave and the beak is short, the feet are weak, and the feathers are not too much. The feather coat is monochromatic, or has a metallic blue or green sheen; Most species are similar to both sexes.

Swallows spend a lot of time catching pests in the air and are one of the most flexible passerine species, mainly feeding on mosquitoes, flies and other insects, and are well-known beneficial birds. Nest in tree holes or crevices, or drill holes in sandy banks, or stick mud on walls or protrusions in corridors, roofs, eaves, etc. in urban and rural areas. 3 7 eggs per lay.

The swallows will definitely come back. As long as there are no surprises. If your windows are better sheltered from the weather, there are other swallows coming back. You feed the little swallow and don't let the old swallow see it, otherwise she may move.

Of course, the swallow is also very spiritual, and it has a very good memory.