I have 4 chickens overall, a mature Black Australorp, a mature Buff Orpington, and a Welsummer and a Silver Laced Wyandotte who are probably around 14 weeks. The babies have been together with the large hens for about 4 weeks now, and our Buff Orpington bullies them nonstop. The little ones will be hanging out in the run by themselves, and Holiday the Buff Orpington will come over and "pretend" to eat a little just to scare them away for fun. She will chase them around and intimidate them even when they are across the yard and weren't even paying attention to her. Holiday also bullies the cat, and when she is broody (which is often) is VERY vicious and attacks and bites anything that gets near the coop. ( A video of her when broody ) It's clear that Holiday just likes to chase and bully the other animals for fun. Is there anything I can do to reform this hen? Just today we found the SLW with the bump of the top of her comb scabbed over and half torn off. We assume it's Holiday that did it, since she repeatedly attacks the SLW most of all. I don't think that separating her from the others fpr a week would do much, because when she came back she would still be bigger than the Welsummer and SLW and therefore be higher in rank, but still below the Australorp. What do you think?? Can someone please help?