How to divide the mother and mother

There are many ways to distinguish between Baiyan Shanbi.First of all, you can look at its feather color. The feather of the male bird's head is all black, the throat is bright black, and the mother bird's head is green and gray, and the throat is black and white.At the same time, the feathers of the male bird are more bright, and the pattern is clearer than the female bird.In addition, there is another obvious difference in this kind of bird male and female, which is the black line of the abdomen.