One is to sleep in a henhouse in winter. The second is to reflect the primitive nature of birds. When sleeping, one leg stands, the other leg is stuffed in feathers, the neck is turned upside down, and the head is inserted in the wings.

Chickens only have a shallow sleep, not a deep sleep. So whether it is day or night, it is a "nap". The sleeping habits of chickens are derived from the genetic genes of primitive chickens (the ancestors of chickens), which are completely different from our human sleep.

There are many natural enemies (including pheasants) among birds. Beware of birds of prey in the sky, beasts in the trees and poisonous snakes on the ground. In the long-term evolution process, it has formed the ability to respond to natural enemy attacks and fly away quickly.