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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; In early April, and occasionally as early as the end of March, it can be seen in the Yellow River basin. Its migratory route follows the coast to the north, and at the same time to the inland along the rivers, almost all over the north of our country, as well as the Mongolian People's Republic, and the north-east of our country and the south-east of Siberia.
In addition, when Jiayan migrated northward, it first went to Taiwan Province, then crossed the Taiwan Strait to Fujian in the west, or went east along the Ryukyu Islands to reach Japan, or even flew over the East China Sea and moved to Northeast China, Inner Mongolia and Siberia through Korea. In the middle, it flies over mountains and mountains, and often faces the danger of predators such as falcons and eagles.
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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.
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Fly to the southern hemisphere for the winter.
Swallows are migratory birds, and they fly to the "south" every year to spend the winter, and the south here is not south of the Huai River line of the Qinling Mountains, but the guide hemisphere, and many swallows will fly to Australia and other places to spend the winter.
The reason why it is necessary to fly so far is because of the obvious seasonal distribution of the swallows' food. Swallows have a very light body structure, a streamlined body, and long and pointed wings, which are conducive to their flight in the air. However, swallows are so adapted to flight that they have weaker foot strength, so it is difficult for us to see swallows bouncing up and down the road, unlike sparrows.
Swallows rely on their super flying ability to catch food in the air, and almost all of their food is flying insects. Only in the season of food shortage, the fruits of crops are fed.
During the cold season, insects freeze to death or burrow into the soil to overwinter, while swallows migrate to the warmer southern hemispheres because of their short beaks and difficulty digging deep into the soil to catch enough food.
Other: The migration of swallows is not always easy, and they often face many challenges, such as the fact that there is little land in the ocean for them to rest.
Even if there are islands in the ocean, it is often possible that poisonous snakes lurk on these islands, which specialize in preying on migratory birds that settle down.
The climate in the oceans is changing unusually fast, and the winds and rains during migration can directly threaten their lives.
Of course, there are also some swallows that rarely migrate in the tropics and become local resident birds. This is due to the fact that the temperature is high throughout the seasons and there is no significant seasonal difference in food, so they can continue to survive in the winter months.
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Chinese swallows go to the south of China to spend the winter in winter, in China, the Qinling Mountains and the Huai River are the division between the north and the south, but the swallows migrate more than thatQinling Huai RiverTo the south, but to the southern hemisphere of Australia, AfricaSouth Americaetc.
Swallows are migratory birds that return from the south to the north from March to May every year.
Find a mate, build a nest, and multiply here. From September to October every year, they migrate to the "south" for the winter.
Swallow habits.
The swallow is a famous summer migratory bird in our country, which migrates to the north in early spring every year and spreads all over the country in summer.
Because swallows are accustomed to preying on flying insects in the air, they are not good at searching for food in tree crevices and gaps, and their mouths are particularly tricky, and they do not eat berries.
or other foods such as flowers and leaves, so in the winter when there are no flying insects, swallows can only fly south in flocks to warmer climates in order to make a living.
Each swallow can prey on more than 500,000 pests per season, helping us protect our crops and is regarded as a symbol of good luck. However, with the development of urban construction, there are fewer and fewer places for swallows to nest, and it is difficult to see swallows nowadays.
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Swallows fly south through the winter.
In the autumn before winter comes, swallows make their annual long journey, flying in flocks from the north to the far south. The time for swallows to fly south varies according to different regions, for example, in the northeast region, it starts in mid-August, and when it arrives in Shandong, it is after September.
The reason for flying south.
On the surface, the winter in the south is warmer, while the winter in the north is colder, and the swallows have to fly to the south to escape the winter, and then return from the south to the north when the spring flowers bloom.
In fact, this is only one reason, the root cause is food, swallows feed on insects, and they have always been accustomed to hunting flying insects in the air, and are not good at scavenging for insect food in the crevices and crevices of trees, nor can they omnivorous berries, seeds and leaves in winter like oak grouse and ptarmigans (conifers do not lose their leaves even in winter).
However, in the northern winter, there are no flying insects for swallows to feed, and swallows cannot dig for the larvae, pupae and eggs of lurking insects like woodpeckers and woodpeckers. The lack of food makes the swallows have to make a great migration from autumn to spring every year in order to get a broader living space. Swallows have become "nomads" in the bird family.
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In winter, the swallow spends the winter in the warm south.
In the autumn before winter comes, the swallows make their annual long journey—flying in flocks from the north to the far south, where they enjoy the warm sunshine and humid weather, leaving the frost and bitter cold winds of winter to the chickadees and grouse, which never fly south for the winter.
and Thunderbird. On the surface, it is the cold of the winter in the north that makes the swallows leave their hometowns to spend the winter in the south, and then return to their hometowns from the south to have children and live and work in peace and contentment when the spring flowers bloom.
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