Please cover the walls and ceiling with at least 1/2" hardware wiring....was at my son's last week.....he had just put together a coop from pallets. I love to recycle, however, he didn't get the "holes" covered or get the run covered with anything except poultry (chicken) wire.....lost 6 or 8 that night ! has one little slikie left and about 8 or his little reds left! Can't explain what the predator did to the wiring ... surprised even me and I had known that raccoons and weasels, etc can tear it up. Check out the picture of the poultry wire I'm attaching..... Where it is dug is where I'm having my grandson bury some better wire.... I had also tried to straighten out some of the chicken wire myself to make do until my son could get home...(in military and was away)..