What to think of pigeons to judge age

It is judged that the age of the pigeon can be replaced through its feathers. Adult pigeons have 12 deputy main wings. Each year will be replaced from the inside to the outside, and the color will become darker after replacement.You can also see the size of its cavity. Generally, the young pigeons are relatively large, and the pigeons are small.In addition, the older the pigeon, the more blunt and smoother its pecking end, the pointed pigeons.And the nasal tumor of the old pigeons is rough, while the young pigeons are shiny.