- Medium-sized songbird.
- Long tail.
- Rather thin, straight, pointed bill.
- Two wingbars on each dark wing.
- Yellow to yellow-green.
- Male lemon yellow with black head and chest.
Male DescriptionHead, back, throat, and chest black. Rest of body lemon yellow. Wings black with a white wingbar and a yellow upper wingbar or epaulet bordered in white. Tail black with yellow bases to outer tail feathers.
Female DescriptionVariable amount of black spots or streaks on head, back, and throat. Back olive-gray. Underparts yellow to yellowish olive. Wings brownish black with two whitish wingbars. Tail olive; yellowish at base.
Immature DescriptionJuvenile dull olive. First year male resembles adult female. First year female similar, but duller and more brownish, and generally without black on throat or back.