In winter they move to the southern reaches of the United States and into eastern Mexico. In winter American Goldfinches molt into a very dull plumage, so drab compared to the bright colors of the summer breeding male. That makes them less noticeable in winter, unless they are in huge flocks in the weedy fields.

Do goldfinches migrate in the winter?

Migration. Irregular in migration, with more remaining in North in winters with good food supply. Peak migration is usually mid-fall and early spring, but some linger south of nesting range to late spring or early summer. Migrates mostly by day.

Where do goldfinches nest in winter?

To stay warm on a cold winter's night, American Goldfinches have been known to burrow under the snow to form a cozy sleeping cavity. They will also roost together in coniferous trees. Unlike many birds, Goldfinches completely molt their feathers twice a year, before breeding in the spring and after nesting in the fall.