Why do dragonflies fly low when it rains?

Usually, before it rains, the humidity in the air is quite high. When dragonflies fly, they often get their wings wet when they encounter wet water vapor. This is a good time for dragonflies to catch their prey. Therefore, you can see that dragonflies fly very low. Although the dragonfly has strong flying ability, it is difficult for it to fly as high as usual because of its wet body. This phenomenon can only show that the air pressure is low and sometimes it doesn't rain.

1. The humidity is high before it rains, and the wet water vapor will wet the wings;

This is a good time for dragonflies to catch prey, so dragonflies fly very low.

This phenomenon can only show that the air pressure is low and sometimes it doesn't rain.

Flying low is a way for insects preyed by dragonflies to protect themselves before it rains, and dragonflies want to prey on them, to paraphrase:

Before it rains.

Compared with the humidity in sunny days, there is little difference, which does not mean that the humidity in the air must be high before it rains.

The humidity in the weather, sometimes the humidity in the air is very high on sunny days, which leads to extreme sultry, but at this time the dragonfly in the sky will not fly very low. It can be seen that the influence of humidity in the air on insect flight ability is not as great as people think.

The evolution of nature makes most insects have their own waterproof measures on their wings. These waterproof measures are highly reliable and practical, so that the wings of insects generally do not stick to the fog, let alone get wet by humid air. Insects must have the ability to keep flying in various humid climates to ensure their survival in the cruel natural environment. Imagine that if the flying ability of that kind of insect is greatly affected in humid air, they will certainly be affected by themselves.

Sweep it away, you'll never live today. Therefore, insects should be reduced on cloudy days.

There should be other reasons.

exist

There must be a reason why creatures have some instinct, otherwise there is no need to evolve this instinct.

Insect selection is often the most scientific choice. The author thinks that the selection of insects decreases on cloudy days.

To prevent lightning damage and raindrops and

A blow.

Insects are not unable to fly high in humid air, but to prevent raindrops.

And lightning hurts itself, and the instinct decreases before it rains.

Those insects that can't fly when they encounter humid air, even if they have appeared in history, have long been eliminated by nature. In fact, the real flying masters on the earth are all kinds of flying insects, not humans. Humans are not qualified to question the flying ability of insects in humid air.

So dragonflies fly low to catch those insects and fly low with them.