In fact, in some parts of southern China, swallows have settled here for a long time. They generally have no migration process or only short-distance migration! Speaking of swallows, it is a migratory seasonal rhythmic behavior animal. Every spring and autumn, with the periodic changes of the earth's rotation around the sun, it will live rhythmically in the northern breeding area and the southern wintering area along a fixed route, while swallows are good at flying and can carry out long-distance seasonal migration! In addition, the flying distance of swallows is very far, and the north and south mentioned here are not limited to China! Simply put:

Generally, at the end of spring every year, before the arrival of summer in the northern hemisphere, that is, before the arrival of summer in northern China, swallows will begin to migrate rhythmically to the north. They usually choose areas with warm climate for nesting, mating, hatching and brooding. Most of them will breed two nests of swallows in the north, and then set foot on the road of migrating to the south before winter comes in the northern hemisphere, that is, when autumn is getting colder. Generally, swallows fly from China to the south, including some areas south of the Tropic of Cancer in China.

Because swallows mainly overwinter in the south, these areas are mostly tropical or southern hemisphere countries, and the breeding climate conditions are not as good as those in the north. Besides, swallows also need rest and self-regulation. After migrating to the south, they will live a more leisurely and comfortable life, generally there will be no breeding process, and they just need to eat and drink enough every day!

In fact, swallows live in the north, which is the temperate zone in the northern hemisphere. Generally, they will look for mates, nest, mate and reproduce here. Unfortunately, there will be changes in the four seasons in the north. In winter, there is not enough food to keep them alive. In order to avoid the cold winter temporarily and continue the competition, they will fly to the warm areas in the south to find food in order to survive and protect themselves! It's like frogs, geckos, snakes and other animals wintering in the north. One stayed at home and the other flew to the south. Just like rural people go out to work now. Although they can live outside for a long time, they are not home after all. After the holiday, they still go back to their hometown in the countryside!

However, due to China's vast territory and wide distribution of various climatic environments, in some southern regions, swallows may not exist or only have a short-distance migration process because of the suitable local climatic environment, and there is no need for long-distance flight migration from north to south! According to relevant statistics, at present, in the climate environment near the Tropic of Cancer, Hainan Island and some small areas in the south, there is a way of life in which swallows do not migrate or migrate for a short time, so swallows in these areas actually live in the south all the year round, and rhythmic behavior is not obvious in the season! (The above is only a personal opinion! )

I don't like going to the north. That's because the swallow is a basic action, and I belong to human beings, which is an advanced action, so I have my own will. Bottom animals? In that season, you can only go to the north to survive. And people? Very different! No matter spring, summer, autumn and winter, wherever you go, you can live in the future. Except the north? Once in winter, you can't go out. Can it be more terrible than I thought? The reason is that I am the most freezing person.