I have one weekers with two weekers and the two weekers are starting a little to pickon the younger ones, not too bad yet but I am not liking it. Trying to keep faith cause I know chickens will be chickens but if the picking on gets much worse I will get rid of the older or separate, dont know. I have one that has been from day one the head honcho. We call her joker from spiderman the movie?...joker is the bad guy with attitude. So far, thats the only one weve named. Hopefully she gets better though and not much worse, shes a butt. Might get rid of that one, seems to be the one causing problems. I put a chunk of earth and grass in there and it helped a little but when I moved them where there is a lot more light the fighting seems to be getting worse. Not sure what else to do myself. Good luck.