When do swallows migrate? What is the Chinese swallow migration route?

The Chinese swallow migration routes are:

In China, Jiayan began to move north in February and flew to Guangdong; It arrived in Fujian in early March, and was seen in Zhejiang and the lower reaches of the Yangtze River in the middle of the year; At the beginning of April, and occasionally before the end of March, the Yellow River basin can be used.

See its trails. Its migratory route follows the coast to the north, and at the same time follows the river to the interior, almost all over the north of our country and even the Mongolian People's Republic.

and the north-east of our country and Siberia.

of the Southeast. In addition, when the family swallow migrated north, it first went to Taiwan Province.

After crossing the Taiwan Strait to the west.

to Fujian, or east along the Ryukyu Islands.

As for Japan, it may have flown over the East China Sea and moved to Northeast China, Inner Mongolia and Siberia via Korea. In the middle, it flies over mountains and mountains, and often faces the danger of predators such as falcons and eagles.

Swallows belong to the passerine family and are a common name for house swifts and swifts.

Swallows are small birds with a body length of 13 to 18 cm, long wing tips, a forked tail, a short beak, and mostly grayish-blue or black shiny back feathers. In ancient times, it was called Xuanniao. The wingtips are long and good at flying, the beak is short and weak, and the beak is wide and lobed, which is the beak shape of a typical insectivorous bird.

The feet are short and the claws are weak. There are more than 20 kinds of house swallows, rock swallows, gray sand swallows, golden-rumped swallows and hairy-legged swallows in the world, and there are 4 species in China.

Our common swallow swallow is a migratory bird among birds, which flies south en mass every autumn and returns to the north in the following spring. The swallow is a famous summer migratory bird in our country, which migrates to most parts of our country in early spring every year, spreads all over the country in summer, migrates south in groups after breeding, and winters in India, Nanyang Islands and Australia.

Swallows mainly feed on harmful insects such as mosquitoes and flies, and are known to be beneficial birds. House swallows nest under the eaves and prefer to be close to humans, who also love to take care of this beneficial bird.

The swallows migrate in early spring.

Swallows belong to China's famous summer migratory birds, will migrate to the northern region in early spring every year, spread all over the country in summer, and migrate south in groups after breeding, to spend the winter in the South Ocean Islands, Australia, India and other places. Swallows migrate mostly in the early hours of the morning, and the direction of swallow migration is north-south.

In addition, the timing and location of the swallow's migration is also related to the species and climate, with some swallows starting to migrate before the onset of winter, while others will start migrating before the onset of spring.

In conclusion, the swallows migrate in early spring, and the exact time and location of the migration needs to be determined according to the local species and climate.

Some birds can change habitats at regular intervals with the changing seasons of the year, and these birds are called migratory birds. Migratory birds can be divided into two types: summer migratory birds and winter migratory birds. The former refers to flying to a certain area in spring and summer to nest and settle down, give birth to children, when the young birds grow up, it is late autumn, they fly to the warmer areas in the south to winter, and fly to this area to breed in the spring of the following year, for this area, this kind of bird is called summer migratory birds.

Red-winged blackbirds flying in the sunset.

Such as Jiayan, etc., spread throughout all provinces and cities in China in summer, and migrate to southern Yunnan, Hainan Island, Xisha Islands and Taiwan in winter; Another such as cuckoo, oriole and so on also belong to summer migratory birds, the latter refers to wintering in a certain area in winter, flying to the north in the spring of the following year to breed, after the young birds grow up, it is late autumn, and fly to the original area for wintering, for the region, this kind of bird is called winter migratory birds. For example, wild geese, swans, wild ducks, etc. are winter migratory birds in the middle and lower reaches of the Yangtze River in China. Most migratory birds have the habit of migrating from north to south, and the farthest can cross the ocean, such as the peregrine falcon, which can reach Australia directly from Siberia via China.

In addition, there are very few migratory birds that can fly from west to east or vice versa.

Swallows are divided into swifts, floor swallows, house swallows, rock swallows, etc. In China, it began to travel north in February, flying to Guangdong; It arrived in Fujian in early March and was found in Zhejiang and the middle reaches of the lower reaches of the Yangtze River; This phenomenon can be seen in the Yellow River basin at the beginning of April and even before the end of March. Its migratory route is to fly north along the coast and rivers, almost all over northern China, as well as the Republic of Mongolia, northeastern China, and southeastern Siberia.

In addition, when Jiayan traveled north, it first reached Taiwan, then west through the Taiwan Strait to Fujian, or east through the Ryukyu Islands to Japan, and even flew over the East China Sea via Korea to Northeast China, Inner Mongolia, and Siberia. Flying over the high mountains in the middle often faces the danger of being preyed upon by natural predators such as falcons and eagles.

The Swallow flies at a speed of 100-120 kilometers per hour and can basically fly 700-800 kilometers a day. It can be called one of the most flying members of the bird family. The swallows are also very good at flying, some hit the wall like arrows, and some go straight into the sky like arrows; They can make a sudden 180-degree turn, or their wings don't vibrate, they don't shake, and they just glide through the air for a few minutes.

Swallows in China migrate south and north in a regional gradient. Most of the common swallow wintering grounds in China are Southeast Asia and South Asia, and some swallows also wintering there on the border of Yunnan. Beijing Louyan moved to South Africa.

The distance traveled by different species of swallows also varies. Every spring and autumn, swallows migrate in flocks along a relatively stable route. The "southern" destination of swallow migration distributed in China is not the southern region south of the dividing line of the Qinling Mountains and the Huaihe River, but generally selected in Hainan, Yunnan and other tropical regions, and some species of swallows fly south out of the country to Southeast Asia, South Asia and other more southerly regions, and travel tens of thousands of kilometers.

Some Asian swallows can fly over mountains to India, while others can cross the equator and fly to Australia and other places for the winter. European swallows are more persevering, and they are also very desperate to survive the winter, crossing the Mediterranean, crossing the Sahara Desert and finally reaching southern Africa.

Extended Materials. Why do swallows fly south?

The winter in the north is not conducive to insect reproduction, some insects are frozen to death, some enter a dormant state to hide, due to the lack of food, swallows themselves do not have the habit of hibernation, in order to make a living, force them to fly to the southern tropical areas where there are insects to eat before winter comes.

Winters in the tropics tend to have plenty of food**. On the way south, swallows also fly and hunt at the same time. In the south, they only need to do one thing, which is to eat and drink enough, and the time there is still relatively leisurely.

Why do swallows fly back north in the spring?

Since the climate in the south is like spring all year round, and there are always enough insects to eat, the swallows have crossed thousands of mountains and rivers before migrating to the south, why not stay all year round? And what about returning to the temperate northern region in April next year?

In the southern tropics, the vegetation is abundant and the biological diversity is diverse. The tropics are much more diverse and abundant than in the north, and competition for food and habitat is intense. Whereas, swallows are petite in size and gentle in nature, so they do not have a competitive advantage.

Moreover, the south is rich in species, and there are many natural enemies of birds, such as birds of prey, snakes, and birds under the eagle family, which are obviously not conducive to reproduction and raising the next generation.

Swallows migrate from a few kilometers to tens of thousands of kilometers.

Biological "migration" - migration of birds: refers to the process of birds moving long distances between breeding grounds and wintering grounds (or new feeding grounds) along a relatively stable route with the seasons of the year.

Many birds must have enough energy in store before migrating. This is an adaptation to the flight over long distances. The way energy is stored is mainly by depositing fat.

Not only does fat provide energy for migratory birds, but the water produced during fat metabolism is also used by the body. Many birds gain weight dramatically, or even exponentially, due to fat storage. For example, the black-capped white-cheeked forest warbler in North America and the water pampas warbler in Europe generally weigh about 11 grams, but can reach about 22 grams before migration, and the fat deposited can last about 100 hours of flight.

Swallows have a super memory, and when they return to the city where their home under the leadership of the group is located, they will find their home accurately. All living things in nature are amazing. Some animals can be considered their former owners years after they have left the crowdAnd there is another animal that will never forget their nest, and that is the swallow!

Swallows travel back and forth between the north and south every year, but every few months, when they go to their previous places, they can be ready to look for their nests because the swallows have a really good memory, as if they have their own map. Because of his good memory, when swallows return to their place of residence, they can immediately find their nest to live.

Swallows have their own biological map, they can remember their nest from memory, even if the house is renovated, it will not affect them to find their nest; But most of them can't leave the group leader. After all, they can only remember that their lair is in, but they can't really remember which city their lair is in. Only by following the tour leader will they be able to safely return to the city where they live.

What if the nest disappears? Never mind. Swallows will rebuild their nests.

There are many cases in life where sparrows grab their nests or humans lose their nests. Whenever we communicate in spring and autumn, we always see a flock of swallows flying home and then landing exactly in their original nests.

Does it look like GPS? I can be ready to find my nest. No, the most important thing is to have a strong leadership.

The most necessary condition for a swallow to find its nest is a strong leader。As the leader of the swallows, they need an extraordinary memory, remembering their route from north to south, and then bringing each one back to their own city. It is not difficult for them to find their nest.

It turns out that swallows feed on insects, they have always been used to preying on flying insects in the air, but they are not good at finding insect food in tree crevices and crevices, and they cannot hunt berries and seeds like grouse and ptarmigans, but eat leaves in winter (some conifers do not shed their leaves even in winter). However, in the northern winters, there are no flying insects for swallows to hunt on, and swallows cannot explore the larvae, pupae and eggs of lurking insects like woodpeckers and whirling finch. The lack of food makes it necessary for swallows to make a large migration from autumn to spring every yearin order to obtain a broader living space.

Swallows have become "nomads" in the bird family

Birds have a unique ability to discern directions, and as they migrate, this sense of direction slowly deepens in their memories, and over time they remember the route.

Swallows have a super memory, and they use the Earth's magnetic field to find their own nest.

In fact, the swallow remembers the route based on remembering the surrounding environment, as well as the smell left behind.