Breeding (Alternate) Plumage: Black mask, white eyebrow stripe. Conspicuous black band across the upper breast, with heavy black streaks on the sides, wide white wing-panels, and a black back. Rump yellow. Nonbreeding (Basic) Plumage: Duller with reduced streaking, two white wingbars, and greenish back. Lacks black face mask; face gray with white eyering.
Breeding (Alternate) Plumage: Gray face, white eyebrow stripe, modest black streaks on the sides, and thin white wingbars. Nonbreeding (Basic) Plumage: similar to nonbreeding male, with an olive-tinged crown and less streaking.
Similar to nonbreeding adult, but without black streaking on chest. Olive-gray crown and upperparts. Throat, breast and belly yellow, with pale gray band across upper chest. Narrow white wingbars.