What is the easiest way for the little lark to divide the mother -in -law

The easiest way to split the mother -in -law is to listen to the sound. The sound of the male bird rolled gentlemanly, and the sound of the mother bird was short, and only one sound could be made.In addition, there are other methods to judge male and female.For example, the male bird's body is slender, and the mother bird is short and fat.The male bird's head is very small and round, and you can also see the back of the head, and the mother bird's head is larger.The eyes of the male birds are very godly, the most thick, and the mother bird's eyes are small and gentle.