The American Goldfinch is the state bird of Washington, Iowa, and New Jersey. What they look like: The Blue-winged Warbler ...

Head usually buffy, eyes pale yellow. Undersides are white with thin brown streaks, white undertail. Flight: wings typically held straight out from body ... to medium-size birds and small mammals ...

Generally shy and elusive, the yellow ... of the bird. It favors eating caterpillars and seems to respond well to outbreaks of tent caterpillars. The yellow-billed cuckoo has a slender body ...