How does colorful birds look at age?

The age of colorful birds is mainly manifested through feathers and skin. The feathers of young birds are loose, the skin is relatively tender, the birds are tight, and the skin has fish -like leather.In addition, you can use its claws to judge age. For example, the toenails of the chick's paws are short, the toenails of adult bird claws are relatively long, and it will be white on it. This is also one of the old manifestations.