Why do quails die when they see water

The quail is afraid of rain. After the feathers are wet, if it is not killed in time, the temperature will be reduced, and the continuous low temperature will cause it to be frozen to death.The bird's body is small, the feathers are dim, and the difference between male and female is not much different. It usually becomes a pair of activities. I like to find food in weeds or short trees.It is eaten mostly weeds, beans and grains, and it will eat a lot of insects in summer.