Some chicken lice will be attached to the chicken's body, and some feather lice and feather worms will be attached to its wings and feathers. These chicken lice will suck the blood of chickens, and feather lice will eat the hair on chicken wings.

The reason why chickens bathe in the sand is to drive away these insects. Chickens roll in the sand to rub their skin, harden the feathers of their wings and let the sand enter the space between the feathers. At this time, chicken lice, feather lice and feather worms attached to the body and wings will be shaken off with the sand.

It will wash itself in the sand, and the chicken will die when it touches the water.