My coop and run has a steel roof, and the run is very very predator proof. The only predators that would ever be able to get in my backyard would be coons, possums, cats, and maybe rats. We live in Southern California so there aren't many predators here, I rarely see any coons and once and a while I see some possums, but not often at all. Anyway I'm 99% sure nothing would be able to get in at night so is the little pop hole need to be covered? It would be much eaiser that way because I wouldnt have to wake up early in the morning to let them out.