How to divide the mother -in -law and mother

It is not easy to distinguish between the mother -in -law, because the body color of the male and female birds must be observed from a subtle place.For example, the body of the male bird is often relatively large, the mouth is dark red, and the throat has large black plaques, and the sound is very beautiful.The female bird's body is slightly smaller, the mouth is conical, and the dark spots in the throat are mostly developed horizontally, and the cry is relatively single.Usually when you grow up, you can better distinguish.