Right! I actually have been thinking about it myself. with ways to basically chicken proof the roof. It was scrap from the roof when I was building the coop itself. I was thinking those foam pool noodles but im thinking they could peck it. I've also thought plastic tubing and just slitting it and slipping it on the edges. And also just sanding it down. I haven't quite decided yet.The only thing that hasn’t been mentioned is the metal roof on your nesting box. Just be careful cause the edges are really sharp. Chickens get to crazy places and could cut themselves badly.