What's wrong with the monk parrot tail hair?

The monk's parrot tail may be changed or sick.If it is changed, this is the normal physiological phenomenon of the monk parrot. Do n’t worry too much, but you still have to maintain environmental hygiene and do a good job of feeding.If it is sick, the situation will be different. The birds will perform relatively sluggish, and the excrement will be different. At this time, it is best to treat it in time.