I keep a mixed flock of bantams and standards. Right now it's 8 bantams and 4 standards. The four big girls have seniority here and are picking on my new little ones something fierce. In particular, I have a black Orpington who is at the bottom of the order among the big girls who is actually chasing and drawing blood on my bantam pullets and hens. I'm afraid she is going to do some irreparable harm at some point! The one that I believe is the top hen is mostly disinterested in them but she is pulling the beard and muff off of my other ameraucana. I originally though it was lice, but I treated for those a month ago and just saw that she calmly stood there while her clutch mate pulled feathers out of her neck. My oldest hen who remains comfortably in the middle of the standard size hen order is curious about the little ones but has shown to aggression at all. Can someone help my understand what's going on, and whether I can stop the bloodletting in my coop and run? Right now we have been crating the Orpington where she can see everyone but not attack if we aren't in the run to mediate. I also have a thread for people bantam and mixed flocks in the SF east bay here.