The way birds avoid extreme dry weather.

As flying animals, birds are more sensitive to weather changes than other animals. The mainstream view in the scientific community is that birds have unique bones. Birds' bones are hollow, separated by honeycomb gaps, criss-crossing and filled with air. This unique "boneless" structure can not only reduce the weight to the maximum extent, but also feel the air pressure. The more good birds fly, the more hollow bones there are.

Drought will reduce water and food, and birds will reduce reproduction rate and improve survival rate.

When the weather gets bad, animals will be affected in various ways. Some scientists have done research. When the weather is dry, the reproductive rate of birds will be reduced to about 36% to 52%, on the contrary, the survival rate will be greatly improved. The survival rate and reproduction rate vary.