What does Hibari look at age

Seeing the age of Hibari depends on its claws. The skin on the young bird's claws is tender, and it is relatively bright. The old bird's claws will turn white and shallow.In addition to looking at the claws, you can also look at the brightness of its feathers. The smaller the birds and feathers, the bright, the color of the big bird feathers will be dull, and as the gradually becomes old, the feathers are not neat, and they will often be messy.