Goldfinches move around the area in the winter, not exactly a migration. However, you may not recognize them in winter because they turn olive-green-brown in the fall, and lose their black caps. Woodpeckers are common in your area. The downy and hairy woodpeckers are black and white (males have red spot on back of their heads), the red-bellied has an all red head, as does the red-headed woodpecker. But the woodpecker you described sounds like the northern flicker, which has borwn, black and white, with a little yellow in the wings.