A 300-word composition describing swallows

Spring has come, the grass is green, the flowers are in bloom, and a lively and clever swallow comes out for activities. Swallows like to stop on telephone poles, and a pair of pale yellow claws hold the wires tightly. The feathers on his back are like a black suit. The feathers in the abdomen are like white shirts. It is small and exquisite, with a short and wide mouth under a pair of bright and flexible eyes.

Swallows are not only beautiful, but also catch pests. They are our good friends.

Although mosquitoes and flies are so smart and fly so fast, they can't escape the sharp eyes of swallows. As soon as the pests appeared, the swallow flew like an arrow, opened its short and wide mouth, and the pests became something in its stomach. Sometimes mother Yan will put pests in her mouth and fly back to the nest to feed her baby!

Swallows are not only experts in catching insects, but also experts in nesting! This reminds me of Bai Juyi's poem' A few early warblers compete for warm trees, who will carve spring mud with new flowers'. Swallows nest under the eaves. They first build them with mud, straw and branches, and then stick them with saliva. It is not easy for swallows to build nests.

Swallows are birds that are beneficial to human beings. It killed 250,000 pests in a few months, and it will serve people forever.