House finches can be found in the Decorah area year-round, although some wintering finches could be migrants from colder northern areas. They eat almost exclusively plant materials, including seeds, buds, and fruit. While they don’t display the seasonal flexibility in diet that red-bellied woodpeckers or American robins do, they adapt to local conditions, eating whatever plant foods are available.
House finches use stems, leaves, rootlets, twigs, feathers, and string to build their cup nests, which they line with soft materials, including more grass, rootlets, and hair. They lay two to six eggs per clutch and produce up to six broods per year. House finches incubate eggs for 13-14 days and young stay in the nest for 12-19 days before fledging.