When the swallow returns, how did he find his original home?

Some scientists speculateThere are two possibilities for birds to return to their old nests: one is that they will remember the position of the stars in their home and then navigate through the changes in the position of the stars in the sky; The second is that they can be sensedEarth's magnetic fieldand then use the magnetic field to determine its location and its old nest.

The swallow is a typical long-distance migratory bird.

In the process of migration, they often cross the ocean, cross the mountains, and are the house swallows of our country.

They may even fly to India or Australia in the winter, but no matter how far they fly each year during wintering, they will fly back to their old nest in the spring to breed.

Northern song dynasty. Nün Yat-nu "Huanxi Sha.

The new leaves are faint and traceless, and the spring mountains are green as the soul. Light smoke half cage small dusk. The swallow returns to find the old base, and the elegance is full of people. Flowers fall with catkins.

This Song poem has a history of more than 1,000 years, in fact, before the Northern Song Dynasty, people discovered the habit of swallows looking for old nests.

Swallows are a good flying bird, they can reach up to 3,000 meters in the air, and the lowest time can glide about 20 centimeters above the ground, ordinary swallows can fly at speeds of up to 120 kilometers per hour, according to scientists, the brown swift of India.

They can reach speeds of up to kilometers per hour, and spend most of the day in the air, rarely resting.

French scientific journal.

Savage Lands is mentioned in Swallows: The Migratory JourneyNo matter how far away from home the swallows are, they can eventually find their nest last spring with their amazing memory or other abilities.

Scientists have two theories about the swallow's ability to find old nests

Astronavigation scientists believe that many animals, such as dung beetles, use the stars in the sky for positioning.

No matter how far away they are from the nest, they can push the dung balls home in a straight direction, and scientists believe that most of the birds migrate at nightScientists have found through experiments that birds and dung beetles remember the location of the stars they live in and navigate themselves through changes in the position of the stars in the sky.

Geomagnetic induction scientists.

The study found that birds should be able to sense subtle changes in the Earth's magnetic field and then determine their own position and their own purpose. In December 2014, it was written in the Journal of Experimental BiologyBirds have delicate photosensitive proteins, and birds perceive changes in geomagnetic fields and navigate through the coenzyme action of this sensing protein.

Animals in nature often have all kinds of incredible special abilities, waiting for us to continue to study and explore.

The theory of geomagnetic induction of migratory animals is a fact that has been recognized by the scientific community for many years, and scientists believe that birds can sense subtle changes in the earth's magnetic field to determine where they are and where they are going. Birds have delicate photosensitive proteins, and in the process of geomagnetic navigation, it is the coenzyme action of this sensing protein that can make birds feel geomagnetic changes.

The little swallow wears a flower dress and comes here every spring, and it is said that every winter migrating wild goose comes to his own home according to his own memories. So he has a memory.

They can be found accurately based on their sense of direction and memory, as well as when they fly back together with the group.

Swallows have a super memory and are in flocks.

When the group returns to the city where they live, they will find exactly what they once called home.

Animals in nature are amazing, there are some animals that can still identify their former owners after years of leaving the crowd, and there is one thing that has never forgotten its own nest, and that is the swallow! Swallows travel back and forth between the north and south every year, but they can also find their nests when they go to the same place after a few months, because they have a really good memory, as if they have their own map.

1. Swallows must follow the group every time they move, after all, most of them can't move alone

Every spring and autumn exchange, we will always see a group of swallows moving home, and then accurately land in the former nest, does it look like GPS? You can be so ready to find your nest, no, the most important thing is to have a strong leader. The reason why the swallow can find its own nest, the most necessary condition is a strong leader, as the leader of the swallow needs to have extraordinary memory, remember their own north-south migration route, and then bring everyone back to their own city, for the appearance of finding their own nest is not a difficult thing.

Second, because of the good memory, swallows can immediately find their own nest to live when they return to their place of residence

Swallows have their own biological map, they can remember their nest by memory, even if the house is renovated, it will not affect them to find their nest; But most of them can't leave the team leader, after all, they can only remember their nest in **, and can't really remember which city their nest is in, as long as you follow the team leader, you can safely return to the city where you live. So what if the nest is gone? It's okay, swallows will rebuild their own nests, and there are many cases in life when they are robbed of their nests by sparrows, or their nests are lost by humans.

Relying on his super memory, the swallow can find his own place to live.

The swallow is a migratory bird that migrates depending on the season. And the reason why he was able to find exactly where he once lived was because he was able to use the Earth's magnetic field to discern the direction.

This is because the swallow will remember the path it has traveled when it flies south, so it can still find the place where it used to live.

Before they left, they left a mark on where they lived, so that they could find it the next time they returned.

Because for swallows, they migrate back and forth between the north and south every year, and they remember the routes they fly, and they can remember the places where they used to nest.

The swallow went, and when there came again, the imitation sentence was as follows:

1. The movie is over, and there is a time to play it again.

2. The sun has set, and there is a time to rise again.

3. The shadow is crooked, and there is a time when it is correct.

4. When the river is dry, there is a time to flow again.

5. The opportunity is gone, and there is a time to come again.

6. The stars are gone, and there is a time to come out again.

7. The wind has stopped, and there is a time to blow again.

8. The fish is gone, and there is a time to come again.

9. The leaves are yellow, and there is a time when they are green again.

10. The creek is frozen, which cavity has a time to remelt.

11. The grass has withered, and there is a time to grow again.

12. Spring has passed, and there is a time to come again.

13. The clouds have floated, and there is a time to come again.

14. The TV is turned off, and there is a time to turn it on again.

15. The peach blossoms are gone, and there is a time to bloom again.

16. The moon is missing, and there is a time when it will be round again.

17. ** is broken, and there is a time to reconnect.

18. Friends are separated, and there is a time to reunite.

19. The bird is gone, and there is a time to come again.

20. The shrimp ran away, and there is a time to come again.

21, ** hanged, there is a time to fight again.

22. When the flowers wither, there is a time to bloom again.

23. The rose is grateful, and there is a time to bloom again.

24. The fish is gone, and there is a time to come again.

25, the sky is dark, and there is a time when it is blue again.

26. The grass is yellow, and there is a time when it is green again.

27. When the street lights go out, there is a time to turn on again.

28. When the pond is dry, there will be a time when it will be full again.

29. The hair is cut, and there is a time to grow again.

30. The leaves of the finch potato have fallen off, and there is a time for them to grow again.

The swallow went, and when there came again, the imitation sentence was as follows:1. The movie is over, and there is a time to play it again.

2. The sun has set, and there is a time to rise again.

3. The shadow is crooked, and there is a time when it is correct.

4. When the river is dry, there is a time to flow again.

5. The opportunity is gone, and there is a time to come again.

6. The stars are gone, and there is a time to come out again.

7. The wind has stopped, and there is a time to blow again.

8. The fish is gone, and there is a time to come again.

9. The leaves are yellow, and there is a time when they are green again.

10. When the creek is frozen, there is a time for regeneration.

11. The grass has withered, and there is a time to grow again.

12. Spring has passed, and there is a time to come again.

13. The clouds have floated, and there is a time to come again.

14. The TV is turned off, and there is a time to turn it on again.

15. When the peach blossoms fall, there is a time to bloom again.

16. The moon is missing, and there is a time when it will be round again.

17. ** is broken, and there is a time to reconnect.

18. Friends are separated, and there is a time to reunite.

19. The bird is gone, and there is a time to come again.

20. The shrimp ran away, and there is a time to come again.

21, ** hanged, there is a time to fight again.

22. When the flowers wither, there is a time to bloom again.

23. The rose is grateful, and there is a time to bloom again.

24. When the fish are scattered and slippery, there is a time to come back.

25. When the sky is dark, there is a time when it is blue again.

26. The grass is yellow, and there is a time when it is green again.

27. When the street lights go out, there is a time to turn on again.

28. When the water flushes the rough wax pond and dries up, it is full again.

29. The hair is cut, and there is a time to grow again.

30. When the leaves fall off the stool and take them, there is a time to grow again.

Swallows and other birds rely on the earth's magnetic field to determine their direction when flying, so swallows and other birds have a strong sense of direction, and even in the second spring, they can find the first place to nest. It is believed that there are many miraculous things in nature, and people have even relied on the flight of swallows to find the secret that allows airplanes to fly freely in the air.

I believe that many people in the Bandung Forest Group have discovered such a thing, the swallow will come to the house every spring, and then in the autumn he will fly to the south to spend the winter, but in the spring of the second year, the swallows can also successfully find the first nesting place. This is mainly because many birds rely on the earth's magnetic field to determine the direction, and they have a very strong sense of direction, so even in extreme weather such as fog, they can find their direction smoothly.

In addition, birds such as swallows can also orient themselves based on the natural polarization of sunlight. For swallows, when visible light shines on the retina, a pigment on the retina, electrons on the retina become active. The pigment on the retina plays a very important role in the vision of the swallow, when the pigment on the retina, the electrons are active, and it can smoothly fly forward according to the earth's magnetic field.

Swallow is a migratory bird, it will fly to the south to spend the winter when the winter comes, and in the spring it will fly back to the north from the south, thanks to the swallow's good sense of direction, so he can find his nest very smoothly, may be for many people swallows can find their nest in the vast sea of people, it is a very magical thing to bury oranges, but for swallows, it is like going home in autumn and spring, a very normal thing.