What's wrong with the tail of the pigeon tail?

The tail of the pigeon tail is that it is changing the hair. Usually the summer of each year is its feather change period.Changeing hair is the normal physiological phenomenon of birds. Usually, in addition to changing the young bird's long -term meeting, the birds change the hair every year. Some change it once and some changes twice.If you change your hair, you will lose your hair first, and then you will grow new. When you lose your hair, pay attention to cleaning. When you have a new hair, you must add some nutritious foods.