American Goldfinches are found throughout the United States and southern Canada. Males' bright yellow feathers contrast dramatically with the black patches on their head and wings. Females and juveniles are a duller yellow. During their short, swooping flights, goldfinches often make twittering sounds. Though some migrate south for the winter months, others stay put and are frequent visitors to backyard feeders. During winter months the plumage of both sexes become gray-brown.