Why do you know more when it rains?

When cicadas are soft and easy to climb out after rain, they will climb out and shell the trees. When there are fewer birds in rainy days, there will be fewer relative natural enemies. In fact, only cicadas come back at night, and natural enemies basically sleep, which is safer.

Cicadas don't make sounds by vibrating vocal cords like other small animals, but by special vocal organs in their stomachs. This organ is like a drum, covered with an eardrum, which makes a loud noise when it vibrates.

There is still a small space in the eardrum, which can cause * * *, so the cicada's cry is so loud that it can be heard from a kilometer away! Interestingly, you can also sing passionately in different tones.

Extended data:

Only the male cicada can sing, and the female cicada doesn't make a sound because of her body structure. However, when the weather changed from sunny to rainy, the male cicada stopped singing.

The content of water vapor in the air becomes more, and the eardrum is not easily aroused, so the cicada becomes a "dumb cicada". Only when the weather clears up and the air humidity decreases will cicadas sing again. Therefore, there is such a proverb: "If you know the sound, it will be sunny."