How can a parrot divide the father and mother

There are many methods of parrot division, which can be distinguished from its body, head, color, and volume.Usually the male bird's head is more sharp, and the mother bird is relatively smooth.And the male bird's body is thinner, and the mother bird is fatter.In terms of color, the color of the male bird is usually more brilliant than the female bird.In addition, the male birds are better, and the two are easy to fight together, and the female birds will not.