What do you think of the crow?

If you want to know the age of the crow, you can look at its feathers. If it is relatively bright, it means that it is still very young. The old bird's hair is not very shiny.In addition to looking at feathers, you can also look at its legs, claws and toenails. Generally, the young bird's legs and paws are more tender. The old bird's skin is rough, and there are keratin on it.And the old bird's toenails are longer, and the young birds are shorter.