We have a large coop with 30 birds but I wanted a separte coop for the ones that wanted to set. My wonderful hubby has started an 8x8 coop and I am wanted to put 4 nest boxes in. 1.) should they be floor level but with enough "lip" in the front to keep the shaving from falling out and (2) are shaving ok? Also, have a question on how long mom will stay with them before I should return her to the main coop. I am fencing in the yard area for the 2nd coop but everyone else will free range all day.