What season are migratory birds flying south?

Summer migratory birds refer to birds that fly to a certain area to nest and give birth in spring and summer. Young birds grow up in late autumn. They fly to warmer areas in the south for the winter, and then fly to this area to breed in the following spring. For this area, this kind of bird is called summer migratory bird. Such as Rujiayan, which spreads all over China in summer and migrates to southern Yunnan, Hainan Island, Xisha Islands and Taiwan Province Province in winter; Another example is cuckoo and oriole, which are also summer migratory birds.

Winter migratory birds refer to birds that spend the winter in a certain area and fly to the north to breed in the following spring. When the young birds grow up, it is late autumn and they fly to their original place for the winter. For this area, such birds are called winter migratory birds. For example, geese, swans and wild ducks are winter migratory birds in the middle and lower reaches of the Yangtze River in China.

Migration time of migratory birds

More migratory birds, including smaller grain-eaters, wading birds, geese and ducks, choose to migrate at night and lie dormant for food during the day. Birds that choose to migrate at night will be extremely active in the early morning. On some bird paths, the birds chirping in the early morning of the migration season can even wake the sleeping people.

Studies have shown that birds that migrate during the day mostly use the sun or ground landscape to navigate and locate, while birds that migrate at night use moonlight and constellations to navigate. Some birds migrate day and night when crossing deserts and oceans because they have no place to stand.

Reasons for migratory birds' migration

Many animals migrate, and the migration distance of birds in spring and autumn every year can range from several hundred kilometers to tens of thousands of kilometers. Birds can fly over areas such as deserts or oceans where it is difficult to stop to rest or replenish energy, so they are considered to be the most successful animals in evolution to cope with migration.