Why are swallows becoming less and less common? In more than 40 years, the number has dropped by 3/4, because people are very helpless to live in their hometown when they are young, and in the spring, they will see the arrival of swallows, and then build on the beams

Why are swallows becoming less and less common? In more than 40 years, the number has dropped by 3/4, and the reason is very frustrating

When I was a child, I lived in my hometown, and when it came to spring, I would see the arrival of the swallows, and then build their small nests on the beams, and almost everywhere you could see their "homes" built up little by little with mud, but now the swallows are basically invisible in the city.

China's urbanization is getting faster and faster, and it is very difficult for swallows to nest in cities.

First, the full range of high-rise buildings is not suitable for swallows to nest.

Second, in the city, there is very little dirt suitable for swallow nesting, and some dirt can only be found in some parks where there are waters or where there are houses. The towering mansions are not like the trees in the woods, and they can also allow swallows to get a moment of roost when building their nests.

There are very few trees in the city, and there are workers spraying pesticides, so there is very little food for the swallows.

What do you think is the reason why swallows are scarce?