When will the swallows return to their nests?

Generally refers to spring. The specific time is determined by geographical location. In South China and Yunnan, the early domestic swallow returned in June 5438+ 10; From February to March, domestic swallows began to return to the Yangtze River and the south in large numbers; From March to April, swallows began to return to the north of the Yangtze River in large numbers.

April-May in Northeast China. If you like swallows, you can come to Baidu Jinyaoyan Bar to find the organization entrance.

In winter, the food supply of swallows in temperate regions is greatly reduced, so many species migrate. But unlike most other passerine migratory birds, swallows migrate during the day and fly at low altitude. In addition, they often feed during migration, so their fat reserves are lower than those of other migratory birds of the same size. Species that breed in Africa often migrate with rainfall patterns, but the specific situation is little known. Other species, such as the gray-waisted swallow, seem to wander around and have no fixed migration route.