What do you think of the ten sisters?

If you want to know the age, you can look at its legs and claws. If the skin is delicate, it means that it is a young bird, and the old bird's leather is very thick.In addition to the legs and claws, you can also look at its feathers. The feathers are bright in color, and the softer is often young birds. The old birds are messy.In addition, the young bird's toenails are relatively short, and the old bird's toenails are longer.