Swallows are one of the most beautiful birds, causing the most good feelings in a person. Since ancient times, people have been watching them, there is even a popular sign - if the swallows began to fly low, then it will rain soon.

Indeed, why does this happen, maybe the swallow has some kind of feeling that a person does not have, and feels great what the weather will be like?

So why do swallows fly low?

The answer to this question is simple and lies in the field of physics. The fact is that before the onset of rain or cloudy weather, air humidity rises as a result of which the midges and other insects have wings covered with small drops of water during flight and become heavier than usual.

For this reason, insects cannot wave so actively, plus their mass increases, and they begin to fly much lower. Swallows, in their flight, not only enjoy it, but also eat, feed their chicks, as a result of which they also decrease following insects. If the human eye could easily distinguish between flying insects, it would immediately become obvious why the swallows begin to fly low before rain. The laws of physics always apply! For this case, the law of dependence of gravity on body weight is valid: F = mg