Nothing happened over the weekend. I got to watch 28 30second videos of a sparrow. Those buggers can get in anywhere. No rat, no mice, no mole or owl or ground squirrel. Or weasel. I've been wondering if it might be a weasel, but I don't think they dig tunnels.
I got mad this morning and pulled all the mats up and filled all the holes with gravel. If nothing else, we should get some footage of him digging them back out.