|Photo from Wikimedia Commons|
Towhees that nest in Michigan or Canada usually migrate to the southern United States for the winter. It is uncommon for one to stick around in the winter but don't worry. As long as there is food, water and a nice bush for them to roost they should be OK.
Towhees feed on various seeds, fruits, nuts, berries, insects, spiders, millipedes, centipedes, acorns. They are also often observed feeding on the ground where they noisily scratch for food under bird feeders. A blend with sunflowers and peanuts, like the Wild Birds Unlimited no-mess blend would keep him fat until spring. https://youtu.be/mWVa08fpnXg