A striking small bird that frequents montane forests, but sometimes ventures into dry scrub and mangroves. This species is readily distinguished by its overall gray plumage (tinged green above and yellow below on immature birds) with boldly contrasting white eyebrows and wingbars. All potential confusion species are migrants from North America that have streaking above and/or below that Plumbeous Warbler lacks. Typically feeds in understory with tail often cocked upwards. Song consists of a dozen or so leisurely whistled sweet notes, the first three of which are at same pitch; at times only first three notes are given. Call is a dry rattle.