So I have 15 chickens. 7 are just about to start laying eggs and the rest are 10-11 weeks old. We integrated the two groups together about 3 weeks ago, & there was some pecking from the older girls, which is to be expected, but it's mostly been settled out and they've been getting along fine for the most part, now. the acception is our australorp (Agnes.) She's been having a serious pecking problem. She pecks the younger girls & she's recently started pecking the older girls. It used to be just a few pulled feathers on the younger ones here and there, but I noticed today that she pecked the crap out of an older Buff orps's waddle ( & I think she even tore off a piece of the skin.) Today, when I was locking up, Agnes even started pecking ME in the back of the head!!! It seems like she just keeps getting bolder & bolder with it. Any suggestions to break her of it!!? I don't want mean chickens! Thanks, Liz.