I have 5 month old pullets in with my hens and the young girls are just hanging out in the coop and more irratating some are just sitting in the next boxes. Sometimes 2 in one....not doing anything. I don't want them just hanging out in there when I have enough roosts and outside space for them. They are making a mess of the next boxes and dirtying my eggs. Anyone have any insight on how to fix this matter......?