How to describe the composition of swallows' nests

When spring comes, animals are busy looking for their homes, and swallows are no exception. They want to build a warm nest for their families.

In the morning, I was having breakfast in the yard. Suddenly, a UFO flew past my ear. I was startled. When I looked intently, it turned out to be a swallow flying to the corner with a stick in its mouth. It turns out it's nesting. Why didn't I notice it before? There are two little swallows crying for help. When they saw their mother coming, they stopped screaming. Then, mother Yan flew away again and flew to a big tree in the distance. I'm really worried that it will fall. Soon, it flew back. Along with it, there is a swallow a little bigger than it. It is very strong, with a round belly in the middle of its feathered wings and strong muscles all the way to its neck. It seems to be the father of the swallow. The couple went back and forth, busy, and finally expanded the nest, but the swallows cried impatiently.

She chattered as if she were hungry. Mother Yan heard the sound, pecked something in her mouth, flew to the nest, put it in the swallow's mouth, and flew away. She is feeding the swallow.

Seeing such a warm picture makes me feel very warm.

I lowered my head and continued to eat. Gradually, the shadow of the sun appeared on the wall. Been here for a long time, too. Yan's parents are still collecting firewood and nesting there. They are also very lucky, and their children live well. I silently picked up some sticks on the ground and put them not far from the nest. I hope they can see them and pick them up, because I don't want them to work so hard for their children, so I can save them some strength.

I silently left my heart and silently blessed this happy family with my own labor.