We have 6 chickens that are 14 weeks old, and another group of 6 that are 8 weeks old. Our coop is divided for now, to keep the older group from picking on the younger group. Both sides of the coop has roosting posts and both sides have nesting boxes lined with sawdust. All the chickens seem to prefer to sleep in the nesting boxes at night. None of them are laying yet, but when they do start, I'm thinking this will be a problem. Is this a problem that needs correcting or should I not worry about it?