How to divide the father and mother

The difference between the father -in -law of Bolao is still relatively large.First of all, their feathers are different, and the male looks more brilliant than the mother.The second is that the head size is different, the public head is larger, and the mother is relatively small.At the same time, their calls are not the same, and the male bird's call is much larger than the female bird.There are also some different details. For example, the black pattern of the male bird's eyes is very thick, and the black pattern of the mother bird is relatively thin.