Swallows enter the home: Swallows were called "Yanzi" in ancient times, which means "purple gas comes from the east".
Swallows build nests: Swallows build nests, which means "people are prosperous and happy".
Swallow, small in size, with narrow wing tip, short beak, concave tail, weak feet, few feathers, monochromatic, blue or green, metallic luster; Swallows' tails are like scissors. Swallows mainly catch pests, mainly mosquitoes, flies and other insects as the staple food, and are well-known beneficial birds. Nest in tree holes or cracks, or make holes in sand dikes, or stick mud on walls or protrusions of corridors, roofs, eaves, etc. In urban and rural areas. Swallows are most willing to approach humans, and humans also love this beneficial bird. There is a poem that says, "When you leave Yang She Island, you will go home in spring, weave willows with mud and fly in the rain." I don't want to be close to the rich, close to the people, whispering and cuddling. Swallows usually return from the island to farmers near farmland to breed from April to July. Domestic swallows nest under the eaves of farmhouses. Most of these nests are made of saliva-bonded soil and grass stems, covered with soft weeds, feathers, rags and some Artemisia annua leaves. The bird's nest is dish-shaped.