This is my 5 month old Brahma. She started with feather loss on her rear, below her vent. The next day it was on her legs and now they look bruised and a little bloody. It seemed to come on over night. I have checked her for lice/mites. Any ideas? She doesn't seem to be acting broody. She has always been the boss of the flock but I'm not here during the day to see the interaction. She is eating, drink and laying fine. What do you think???