Will animals (like chipmunks?) eat crocus bulbs?

Factual Questions
1

When the snow melted from our flower gardens this year I noticed an area that had what sort of looked like a maze carved into the surface of the ground. It looked for all the world as if someone had taken an ice cream scoup and dug out a semi-circle in profile trench out along the surface. There’s some short strait lines, then it would branch, mostly at right angles, then lead to further branchings or small (but larger than the normal width of the tunnel) roundish areas that were a little deeper than the rest of the tunnels.

And so on – it was actually a pretty extensive feat of engineering by whatever did it.

Going just by size, I’d think it would have to be something on the size of a mouse or vole, or maybe a chipmunk at the larger end. BTW, I used ‘tunnel’ above, but these are all open to the sky but would have been hidden under the layer of snow before it melted.

Anyway, I found it a little neat, and figured I’d just smooth the dirt back flat when I got around to planting annuals.

But today I realized – that garden is usually sprinkled with patches of crocuses at this time of year. And there are NONE. And not just no flowers, no sprounting clumps of green leaves. And I don’t think I see any of the usual grape hyacinths, either, though there are plenty of snowdrops.

Is it possible my little engineering interloper was mining for my minor flower bulbs??

2

Mice & chipmunks are common bulb thieves. I’ve been lectured that voles do eat bulbs but moles do not.

3

Apparently voles it is. Or maybe just one, an article said they can dig at least twenty feet of tunnel in a day!

If you’re curious, here’s a pic of similar damage except in my case the trails wind around and between some azalea bushes.

Oh, well. I suppose the critter was hungry, found a food supply nobody was using and said “Yippee!” It’s not like I’m emotionally attached to those crocuses. They were there when we moved in, decades ago, and have just sort of lingered – never dying out, never spreading much. I enjoyed the flowers for a week in springtime and then never gave them another thought for a year.

4

I confuse voles & mice anyway. Apparently that is common enough that they’re also known as field mice.
Moles dig similar tunnels. I wonder if they end up sharing tunnels sometimes?

5

Voles absolutely eat crocus bulbs, and they tunnel, so it is probably voles. Voles may rhyme with moles but they are quite unrelated. Moles are not rodents, and are carnivorous and do not eat plants at all. Voles are rodents, in fact closely related to mice.

Quite a few bulbs are either poisonous, like narcissus, or bad-tasting, like onion relatives. Probably to protect themselves from the damn voles.