What kind of weather is depicted in the picture of swallows flying in the Chinese language volume 2 of the third year?

Refers to rainy weather, because the humidity in the air before rain is relatively high, making the wings of insects wet. Therefore, the ability of the insects that are food for swallows to fly is greatly affected, and they can only fly when swallows eat them. Fly close to the ground.

Swallow is the collective name for 74 species of birds in the family Passerine. It is small in shape, with narrow wing tips, a concave tail and a short beak, weak and small feet, and not too many feathers. The plumage is solid or metallic blue or green; both sexes are similar in most species. Swallows spend a lot of time catching pests in the air and are one of the most flexible passerines. They mainly feed on insects such as mosquitoes and flies and are well-known as beneficial birds. They build nests in tree holes or crevices, or drill holes on the beach, or stick mud to walls or protrusions of corridors, roofs, eaves, etc. in urban and rural areas to make nests.

3 to 7 eggs are laid every time