I have read on here some pecking order stuff that has been very severe leading to death or near death. My flock has never been that way, I am sure it has a top chicken and a bottom one, but I can't tell by watching, and no one is picked on to any noticable extent. Others report isolating the meanest for a week or two then placing them back, putting them on the bottom of the social order. I do not know if that would work. I'm afraid if I ever have an overly agressive chicken (either male or female) I would cull.