Without humans as natural enemies, why are swallows not flooding?

It has been noticed that swallows will also choose people who are usually rich and kind when they build their nests, so some people say that swallows can see Feng Shui. In fact, it is unreasonable for swallows to look at Feng Shui, but it is reasonable for houses with wealth and virtue to attract swallows, but the reason is simple. First of all, speaking of wealthy families, usually these families have better building quality, which can better shelter from the wind and rain, and there are more buildings and more nesting sites, which is of course easier to attract swallows.

Besides, being kind to others, such families usually have a peaceful and happy atmosphere, family members usually don't quarrel with each other and have a good relationship with their neighbors. When swallows come to such a family, they will feel that there is a quiet and peaceful environment and will be less disturbed, so they will nest with peace of mind. And some disharmonious families, when they come to such a family and meet family quarrels, will naturally run away in horror and choose other families.

Why do swallows like to live with humans? Will it really look at Feng Shui and choose a good family to stay in?

But when swallows choose people to nest, the first consideration is not the above conditions, but the safety of the nest, because compared with humans, swallows are more afraid of small carnivores such as snakes, mice and cats, and it is most important to avoid their invasion. Therefore, when swallows choose people to build nests, the first thing to look at is the rain-proof performance of the nests, and the second thing is whether snakes, mice and other animals can invade. If you pay attention, you will find that these small animals can't reach the place where swallows nest, and the height of their nests is generally beyond people's reach, because only in this way can they stay away from the harm of natural enemies, nest with peace of mind and breed the next generation.

Why do swallows like to live with humans? Will it really look at Feng Shui and choose a good family to stay in?

Swallows are also many kinds of birds. Swallows that nest in mud almost always choose human buildings, so they will live with human dwellings. However, some petrels are not like this. For example, in Jin Siyan, they will nest on some cliffs that can shelter from the wind and rain, because there is no silt (usually gravel, which is not sticky) at the seaside, and they are all made of their own saliva mixed with seaweed. This is the famous advanced nourishing bird's nest.