"Blue Golden-Winged Warbler or Helminthophila chrysoptera. Upper parts slaty-blue, or or fine bluish-gray; crown, and large wing-patch formed by confluent wing-bars, rich yellow; a broad stripe on side of head and patch on chin, throat and fore-breast, black, the eye-stripe bordered above and below with white; under parts generally, excepting the black breast-plate, white, often tinted with yellowish, and shaded on the sides with ashy. Exposed surfaces of wings and tail like upper parts; great white blotches on three lateral tail-feathers; bill black; feet dark." Elliot Coues, 1884

Blue Golden-Winged Warbler

"Blue Golden-Winged Warbler or Helminthophila chrysoptera. Upper parts slaty-blue, or or fine bluish-gray;…