I am new at this and have purchased 3 buff wyndottes and 1 silver laced wyndottes. The buffs all grew up together and the other one was with a mixed variety. As they were all of the same breed, I was told they would be ok. Problem is, the laced one is a bit of a bully and pecks the others to keep them away from any new foods I throw in. They don't get wounded, but it's clear she dominates the others. The bully is the only one that lays, while the buffs have stopped laying since I've had them, when I was assured they were laying before. I have no reason to disbelieve him. Could the bully be the cause of them not laying? Apart from take her back, is there anything I can do about it?