While field mice and voles are difficult to see in the wild during the summer, in the winter it can be easy to find their snow tunnels. Unlike the chipmunk or the woodchuck, these small mammals stay active all winter, building systems of tunnels under the snow. When the snow is shallow, like it was this week, the tracks are visible.
I teach economics at Kalamazoo College. My wife is also an economist. We were on sabbatical in Europe for the 2014-15 academic year. (Salamanca, Spain, followed by Oxford, UK.) We were in Uruguay for the 2006-7 academic year.