What do you think of pigeon wings?

By looking at the update of pigeon wings and feathers, you can understand its age.For young pigeons, there are 10 main wing feathers. When 2 months old, the first root will be replaced. After that, it will be changed every half a month.Big, you can match at this time.For adult pigeons, it is the deputy owner Yiyu who judge the age. There are also 12. The same is changed from the inside, and the color will be deepened.