Did a predator go through a wood wall. Some of my coops are made of wood. I guess it's knock on wood that nothing except rats have chewed through the wood. Problem was solved here. Do you have some pictures you can post?
The concrete is crumbling, but there. It was mixed by hand and it's due for restoration. I have CAR siding for patches, and 1 X 2 inch welded wire fenc, but it is too much wall to be cost effective. The welded wire would make it harder to clean behind it. I can add some oak sills layered on top of the ones there so I can screw down the siding better. The ends of the stall will have predator proof fence with a skirt.
Even the interior wall is exterior, the barn has one row of stalls converted for parking stuff, my sister has one of the support poles for her mantle.
Hardware cloth is a pretty expensive option. The center row of stalls (there were three) has some siding in it, I intend to use it to cover the holes. My skirting is 1" welded wire fencing, and the coop wall/fence's first foot or so will be 1/2" hardware cloth, with 1X2 welded wire to the roof, which is galvanized steel. The walls are oak frame with CAR siding (tongue and groove 3/4" pine). I will need some hardware cloth or poultry netting to keep the birds off of the foundation edge, and at the top for the same reason. I think I can keep 100 comfortably in the one third pictured above, hopefully I can keep 3 roosters in the mix. Off to put up coop walls...
