I built an 8 x 12 coop using a wooden a-frame swing set. It is enclosed using the green square 48" fencing wire (8ft total in height) with hardware cloth on top of that. The coop and nest boxes are on one end. The roost is in the top section of the a-frame, enclosed with a window and another opening at the ladder entry. My question is: do I need to close up the small space where they will roost at night if the rest of the run and shelter is completely closed off? We live in the city-fenced yard and currently have raccoons, opossums, and skunks that we have seen at night close by.