A medium-sized, long-tailed, ground-dwelling bird of lowland forest. Overall deep blue color with a white throat and upper chest, bordered with a broad black band across the chest, up through the eye to the bill. Female has a narrow white eyebrow. Usually separated by elevation from Chestnut-backed and geographically from Dimorphic, with a slight potential overlap, but Blue has a blue back and crown. Song, a slowly repeated, high-pitch whistle followed by an explosive descending “chew”.