I have a pair in a cage by themselves, just today I realized that my female is picking on the male. Do tehy need to be seperated? Or is this just normal? Earlier this year I had 2 males in with her and she beat up one of the males so bad he was bleedingand had all the feathers pulled out of the back of his neck. I thougt that was odd to but I have never put him back. She never had a problem with the other male untill now. Any advice or reasons this may be happening?