To continue, the bird needs constant care of their feathers to keep them clean, so they can be used at any time. To care for feathers bird uses a special fat gland, located under her tail taking some amount of fat, bird cleans the feathers. This fat does not allow to get wet or drowning water birds.
In addition, poultry, rcpusa feathers, do not allow to decrease the body temperature. In the same hot weather feathers close to the body, do not miss the heat.