We have seven 5-wk old chicks (got them when they were a day old) and are new to raising chickens. Two Wyandottes have made it clear from the beginning that they are at the top of the pecking order. In the last few days, the larger of the Wyandottes has started being very aggressive and is pecking and pulling feathers from at least 2 or 3 of the other chicks. Yesterday we separated two of the chicks that had bald spots on their backs but ended up isolating the bully today. The bullying behavior started around the time that we began introducing them to the outdoors by allowing them to spend a few hours a day in a small coop run. Once we isolated the bully, things were fine until we brought them inside tonight when the other Wyandotte started badly pecking the other chicks. Now we have both Wyandottes in isolation, however, they will all be together when we move them out to the coop/run full time in the next week or so. I'm worried that they bullying/pecking will continue and am not sure how to handle it. Does anyone have any suggestions for how we should proceed?