Why do cicadas chirp before it rains?

Because before it rains, the air pressure decreases, the air is humid and sultry, and the cicada's wings are wet, so it instinctively shakes its wings, which is the cicada's chirping.

Premonitions of heavy rain: dragonflies, swallows fly low, ants move, fish come to the surface for air, heavy rain is coming soon.

Animal predictions for rain: Before it rains, mosquitoes swarm, rain ants appear in swarms, and cats wash their faces. Frogs are croaking and swallows are flying low. Rain must be followed by frogs croaking and swallows flying low.

Cockroaches are flying around and there are showers. Cockroaches are very sensitive to climate change. If you see cockroaches flying around at night, it means that the weather has changed and there will be rainfall.

The spider builds its web, and the rain will clear after a long time. Because it has been raining for a long time, spiders cannot build webs to hunt for food. If you see spiders crawling out to build webs, it means that the weather will soon turn sunny.

Extended information:

About animal weather forecasting:

Chickens

Weather forecasting method - before it rains, the air pressure is low , the humidity is high, insects fly close to the ground, and the chickens have to look for insect food. In addition, the cage is stuffy, and the chickens are reluctant to enter the cage. As the saying goes: "Chickens worry about rain, ducks worry about wind."

Termites

Weather forecasting method - in spring and summer, whenever the weather is hot and muggy, termites will fly out of their holes. In the evening, when it gets dark and they don’t know the way back to the cave, they rush towards the light. This predicts that there will be heavy rain or thunderstorm in a day or two.

Fish

How to predict the weather - "When fish jump out of the water, wind and rain are coming soon", "When fish bloom in the river, it means rain will fall from the sky". When rain is approaching, the weather is dull and dull, which reduces the amount of dissolved oxygen in the water, so fish float to the upper layer of the water or even to the surface to breathe.

As the saying goes: "Swallows fly low, snakes pass by, and heavy rain will come soon." "Water snakes coil firewood heads, and heavy rain flows underground."

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Baidu Encyclopedia-Animal harbingers of weather changes