Swallows really like to stand in the open space, which is related to their size and habits. Swallow has long wings and tail, so it can fly flexibly. However, it has a weakness: its feet are weak, and it can't take off quickly with legs and ankles in narrow places. Therefore, it often chooses to settle in the open space under power lines, cliffs and fences. If it wants to take off, let go of its feet, and it is already in the air! However, it is not absolute. For example, swallows will fill their nests in the pond and have to land.

It was awkward to take off at that time, so they would only land on the ground when they felt absolutely safe. This is why swallows like to hunt in flight, and once they land, it is difficult to take off. Similarly, swans are larger and have relatively weak legs. They can only take off by running up. If the swan is kept in a courtyard surrounded by high walls, it will be difficult for it to fly. The local pigeons are called stone pigeons and swallows by experts. The local bird's nest is also built on rocks. Their genes don't have the habit of taking trees as their homes.

People may not find it. Domestic swallows have never lived in the forest, but in order to reproduce, domestic swallows will go through the forest to find insects. I watch Yan Jia because I doubt that Yan Jia will have any rest time or sleep time. Yan Jia either stays in the wild for a period of time or rests on the high-voltage line. I can't figure out why swallows move to nest and breed under other people's eaves. The swallow wants to build a nest in the tree and stay away from the crowd, but his feet are too weak to stay for a long time. The leaves on the tree will affect his flight.

Swallows can fly as soon as their feet leave the attachments, so you can often see swallows flying in the air. As for the eaves at home, they are generally in relatively wide places. Swallows can take off to look for food as soon as they leave their nests here. Swallows hardly need to run like ducks. It is precisely because of his unique physiological structure that this article begins by saying that he is not suitable for nesting in power. Not only now, at least not in the Tang Dynasty. But what is certain is that Yan Jia doesn't like to find trees to build nests. Does answering this question like this affect me? No. I want to explain that animals have their own nature. Living habits are inherited by ancestors. So pigeons don't necessarily live in trees when they sleep at night. Domestic pigeons are domesticated by wild rock pigeons. According to my observation, turtledoves live in trees, and their breeding nests are also in trees.