New to my garden! More in the comments
Strikingly arrayed in black, yellow, white, and olive-green, Townsend's Warblers are arguably among the most beautiful birds of western North America. In winter, they are relatively common and easily seen on the coasts of Oregon and especially California. Despite their familiarity, however, Townsend's Warblers remain something of a biological enigma, as many aspects of their behavior and population dynamics remain undescribed.