How do I divide my mother and mother in the ten sisters

The ten sisters are not very good, because the appearance is too close, but after the adult bird enters the estrus period, there will be obvious differences in behavior.The male bird became lively and active, liked to jump on the bar, and he would sing, his voice was pleasant and continuous.The mother bird is more quiet, does not like activities, the cry is not very continuous, and most of them are single sounds.In addition, after being stunned, the male often flys, and the mother will enter the nest.