Ever since I learned about red bats roosting in old foliage of trees, especially beech, I cannot look at such situations and not think about bats. And I had, earlier this day, but discounted the possibility given the cold temperatures. Red bats often roost in leaf litter, and I figured that if any were around, they'd be buried in the leaves.
Red bats are highly migratory. But some also overwinter this far north. It's be interesting to know if this one is an early migrant, or a local overwinterer. Anyway, keep an eye on those beech trees for funny lumps, and you might be rewarded with a sighting of one of North America's most elegant bats.