Medium-sized robin of montane and foothill forests in Java and Sumatra. Male is dark blue, with a bright white spot on the forehead. Female is warm earthy cinnamon-brown, with a grayish belly. Dark belly and male’s white forehead (instead of eyebrow) serve to distinguish this species from blue robins and shortwings. Shy and furtive, typically moving about quietly on or close to the ground, often in pairs. Song consists of a short series of beautiful musical, fluty notes; rising in Sumatran birds, generally descending in Javan birds.