Been having the birds smash the chook chow on the inside of our coop. Tried hanging a cd from the doorway but chickens seem scared of it and don't want to walk through it. And it also doesn't seem to do a good job of keeping the birds out? Any other ideas? Thought I read somewhere that perhaps some shade cloth or a drape cut in strips covering the entrance to the coop? Does that work quite well or anyone else have any other ideas other than a treadle feeder to keep the birds from going inside the coop? Anything that doesn't require a gun?