Lovely picture, Frank! I like chipmunks, which is lucky because we have lots of them. Do you feed yours?
A chipmunk was running around in my garden today collecting dry grass and birdseed. We've had a couple of mild days, most of the snow has melted, and he (or she) took the opportunity to get out of the burrow, freshen the bedding, and top up the larder. Between two bird tables we have an area of grass (I hesitate to call it lawn, although it is mowed) riddled with chipmunk burrows. My DH was cursing them the other day, because he accidentally put his walking stick down a burrow entrance and nearly toppled over. If a hole gets really large or causes a subsidence I throw a bucket of topsoil on it and level the ground. Chipmunk burrows have at least two entrances - an obvious one and a hidden one - so I'm not trapping a chipmunk by filling in one hole.
