What natural phenomenon does Swallow South belong to?

In this natural world, strange things often happen, such as in winter, swallows migrate south in flocks. Some people think according to habitual thinking, and feel that the winter in the north is particularly cold, and the temperature in the south is relatively higher than in the north, so swallows naturally have to go to the south to warm up. But the southerners would have felt that this was wrong, because the swallow did not stop when it had reached them, but continued to fly south.

So, why do swallows fly south in winter? And where does this South refer to?

First of all, the swallows will fly south not only for warmth, but also because the food is cut off. Due to the cold weather in the north, many insects go into hibernation or die in the cold, so that the swallows cannot find food. Some people think that there are still plant fruits to eat, but it is difficult for plants to bear fruit under low temperature conditions.

Even birds that eat fish will not be able to catch fish because the water is frozen, so they will starve to death if they sit idly by. What's more, the feathers on the swallows are enough to resist the cold wind, and they are not afraid of the cold at all. In order to change the situation, they can only fly south in groups.

Secondly, most people don't know which area the south of the swallow flies to, so it is directly understood to be a place south of the Huai River in the Qinling Mountains. Actually, this idea is wrong, the south of the swallow flying south usually refers to Southeast Asia, South Asia and other places, flying farther may reach the area near the equator, like the south flight, Australia, etc., and even to the south of the equator. In such a long-distance flight, swallows are prone to accidents, for example, some weak swallows will break away from the team and become separated from the swallows; Some of them die in the middle of the flight due to physical fitness, not to mention the hunters who wait for the opportunity to move.

It is believed that in winter, it is common for swallows to migrate south, and it is also the instinct of their birds. For them, migration is not easy, in addition to having enough physical strength, but also have a firm willpower, otherwise all kinds of accidents will happen at any time in the process. We can also get a lot of inspiration from the matter of swallow migration, that is, when you come to the end, you should force yourself to take that step, no matter what dangers you face ahead, you must move forward bravely, so that you can survive the end of the road.

Like swallows, if they don't migrate, they will starve and freeze and die in the middle of their lives.

Swallow south belongs to the phenomenon of long-distance migration of migratory birds.