We've got 3 Golden Buffs and 3 Barred Rock (30 weeks old) that have been together since birth. The Barred Rock seem to be the dominate ones, pecking at the Buff's when water melon..corn cobs etc are thrown in the coop but nothing real aggressiveness happens. Now last night we bring home 1 Ameraucana pullet and the Buff's are fighting with her, where the Barred Rock don't seem to mind her at all. The Ameraucana is just so docile and takes a beating from the Buff's. Should we just keep them separate or together and let pecking order be established?