American Tree Sparrows come to the feeders often in winter. Spizelloides arborea Tree Sparrows often fluff out their feathers. A rusty cap makes them look like chipping sparrows, who migrate south of Minnesota for winter. These little birds come 'south' to the northern US for winter. In spring, they breed in the far north tundra in Canada (near the tree line) building nests on the ground, often in a tussock of grass. They sport a rusty eyeline, a brown back, and dark smudge in the center of the smooth breast.
