What's wrong with pigeon hair loss

The hair loss of the pigeon may be a change of feathers or a problem with health.generally.The adult birds will slowly lose hair in the lunar calendar every year, basically lose light in August, and start new feathers in September, and they can grow all in October.However, their hair changing period is also affected by many factors, and sometimes the phenomenon of delay in hair change is also normal.The hair loss caused by health problems is often a lack of nutrition, and pay attention to replenishment in time.