Excellent pic of a wire apron!You need to protect it from digging predators. Put an apron of hardware cloth 2 feet across around it (don't forget the corners). Attach it to the coop so there are no gaps. (You could also dig down 1-2 feet, but that's a pain, and not even possible for some of us.) Walk around and look for any gaps larger than 1/2".
(I also use combination locks for my coops, because raccoons and clever and I'm paranoid.)
Here's one of my tractor coops where I had just put down the apron so you can see it (before I had tacked it to the ground with those ground staples). Once it's there a little while, grass grows through it, etc., and you can't see it much.
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