I have a communal nesting box that measures 36" across and is 20" wide. The sides slope up on the wide side to form a peak so it is narrow on the sides. It has a small doorway off of the coop leading into the nesting box. My two BR are 2years old and both went through a molt in the winter so they were not laying. The two Buff Rocks started laying late last year close to the time the other two started to molt so there was not much competion for the nesting box. The problem now is that one of the Buffs wants to lay at the same time as one of the BRs. Daisy (the older BR) is now pecking Angelika (the buff) and has ripped ssome of the skin off her bottom! I have tried putting another nesting box in the run but they won't use it (I have a fake egg in it). How do I stop the abuse? Please, I need suggestions.