Adult Description
- Small songbird.
- Plain olive green back, wings, and tail.
- Yellow throat and upper chest.
- Male has distinctive black mask.
Male Description
Back, wings and tail plain olive. Chin, throat, and upper chest bright yellow. Belly whitish. Dusky flanks. Bright yellow undertail coverts. Broad black mask extending from side of neck through the auricular area and from the eye to the forehead. Whitish to grayish line above black mask separating it from the olive crown.Female Description
Female similar to male, but face olive and underparts paler. Indistinct eyering. May occasionally have faint black mask.Immature Description
Immature resembles adult female. First year male with faint black mask, becoming fully adult-like by spring.