How does the sparrow divide the father and mother

There are many ways to divide the sparrows.First of all, you can look at its head. Generally, the female bird is small and there is no back of the head.Secondly, you can look at the eyes. The males are close to the corner of the mouth, and the female bird is small.At the same time, you can also look at your mouth. The male's mouth is long and thick, and the pecking is very powerful.The female's mouth is shorter and thinner, and the pecking is also very weak.