In the last month, I've mentioned a couple times that I seem to have developed a vole problem in the back garden, off the studio. Last summer, there was a friendly and totally cute chipmunk in that garden, who used the drainpipes and patio pots as convenient hiding and perching spots. This summer, I've never spotted the chipmunk, and instead, nasty two-inch sized animal holes started popping up in unexpected places. They seemed to pop up and then disappear in the yard, but in the garden, they popped up and stayed, mostly masked by the growing zinnias. When I weeded, in July, I found three or so.
This was combined with a weak spot in the yard, just outside the studio garden, that started slowly sinking. And then one day without warning, the area developed into a sink-hole about two feet in diameter and a foot deep. We plugged it with a log, temporarily, and then filled it in with dirt, and lo and behold the next day another small exit hole popped up beside it.
That was when I realized we had some sort of critter issue. I started looking online and, fairly quickly, determined that the problem must be voles. I learned that voles like to eat the roots of plants as well as tulip and crocus bulbs, and that they love hostas. I went and explored the one hosta in the angle of the studio garden off the patio, and sure enough, something had been munching around its base: