A poem about swallows nesting at home-a perpetual calendar

The poem of swallows nesting at home is: Chun Yan built a love nest with mud, not afraid of hard work. Settle under the eaves to avoid the wind and rain, and love to raise Miao Yan without borders. Swallows are birds that are beneficial to human beings. They mainly feed on mosquitoes, flies and other insects. They can eat 250 thousand pests in 1 season, so we should protect them. Swallows' nests are usually made under the eaves where people live, which can avoid the attacks of snakes and mice to the maximum extent and create a comfortable and safe environment for swallows. Where humans live, there are many mosquitoes and rich food sources. Walls and eaves can reduce workload and are stronger.