The American tree sparrow (Spizelloides arborea), also known as the winter sparrow, has a rusty cap and grey underparts with a small dark spot on the breast. Breeding in the tundra or the northern limits of the boreal forest in Alaska and northern Canada, it migrates into southern Canada and the United States to spend the winter. It forages on the ground, nests on the ground, and breeds primarily in scrubby areas at or above the treeline.
