How to divide the mother -in -law and mother

The appearance of the father -in -law of the tiger head, but the color is different.The forehead, pillow, cheeks, and throat of the male bird are black. The eyebrows are divided into three sections. The first paragraph is pure white, and then it becomes bright yellow. The third paragraph is still white.The female bird's forehead, pillow, cheeks and throats are not black, but not clear brown. The yellow eyebrows are not very bright. At the same time, the lower throat is not black, and the others are equivalent to the male bird.