White-footed Mice are excellent tree climbers (great swimmers, too). I was surprised to learn they will spend the winter in covered-over, abandoned bird nests, high in hardwood trees, or in tree cavities when they occur. Although they can enter a state of torpor for several hours, they do not go into true hibernation and therefore they cache food in the fall for the winter. The little guy above had stored several acorns into the tree box, from which Monika had pulled him. These tree boxes in the Koffler Scientific Reserve, at Jokers Hill in King Township, are artificial nests which make scientific observation of the mice much easier for researchers and students.
These mice usually eat at night and their diet consists of nuts, seeds, berries, grains, fruits, fungi and insects.
Maybe in another 10 million years, these little creatures will evolve to have wings and they'll fly around in the treetops, as well as nest there. Who knows? We do have flying squirrels, right?
BtheB