How to divide the mother and mother

The difference between the mouth: The upper mouth of the male civilian bird is mostly arched, the color is more red, the mother -in -law's upper mouth is not high, and the color is very light.Different eyes: A circle around the male bird is red. Although the mother bird is also red, it is often incomplete and there will be interval in the middle.Different calls: The screams of the male civilian bird can be extended, and the mother bird can only make short sounds.