One of our hens was killed over the weekend while we were gone. I looked around the coop and noticed something has been burrowing all over the place and managed to get underneath the wire that goes down 6” all around the coop. There are multiple holes coming up that measure about 3”. The tunneling looks pretty extensive. What animal is doing this? I’m guessing whatever it is killed the chicken but it seems crazy considering how small the holes are. I have no idea where the holes are originating from so it’s kind of hard to fix the problem. Thanks for any help.