Swallow is not only a migratory bird, but also a beneficial bird, which can help us eliminate pests and protect our crops and homes.
Under such circumstances, we all like swallows very much; Many times I also like living under our roof. Even if we pull feces on our land, we won't hate it.
Moreover, this bird has another magical place. Once the nest is built, it will come back here almost every spring. If one day, they suddenly leave this nest, it may be the following:
First, find a new home. For swallows, they thrive in their nests every year; When the swallows grow up, the original nest will become particularly crowded.
In this case, they will find a new place and start building nests again so that they can accommodate them and their families.
Of course, many times I feel threatened and don't want to stay in my original place. This threat may come from our cats or sparrows in nature.
In our life, we can often see that after the swallow leaves, sparrows invade the swallow's nest. Swallows will take the initiative to leave when they see that their nests have been invaded.
Second, something happened to the swallow. It is not easy for swallows to give up their nests, because it is also very difficult to build nests. If one day, the behavior of leaving suddenly appears, it may be that the swallow has left.
After all, in nature, there are also many natural enemies; Among many swallows, swallows are born and die every year.
So when the swallows suddenly leave, either this home is no longer suitable for them; Either something happens to them and they will never come home.