Post some pics of your coop, inside and out, showing nests and roosts....They start off the night in a pile in the corner. When I open the coup in the morning they are on the poles. I'm not sure at what time of night they go from the chicken pile to the poles. I will find adequate sized container and put enough weight in it so the chickens won't be able to get in there. I also heard that nest box curtains can be used to prevent entry into the boxes at night. I'd like to come up with a clever way to close the curtains without having to crawl into the coup (4' X 4', approx, ground level)
...then we can help you figure out some solutions.