Attractive, rather large warbler with long, expressive, white-tipped tail. Occurs in tropical forest of foothills and lowlands, mainly in winter, especially in areas with open understory and boulders. Forages mainly on or near the ground, flipping its tail loosely from side to side; regularly attends army ant swarms. Sexes look alike, with white face spots, blue-gray upperparts, and rich orange-yellow breast.