Attractive, perky, long-tailed warbler widespread in foothills and highlands, locally in lowlands. Favors brushy and weedy areas adjacent to woodland and scrub. Usually in pairs or small groups which hop around low in brush with tails cocked. Note white eyebrow, rusty cap, and yellow bib. Birds in southeast Mexico and Belize are extensively yellow below. Listen for its buzzy trills and chips, usually given in a multi-parted series. Once considered conspecific with Chestnut-capped Warbler.