A large, long-legged, long-tailed robin-like bird. The face, breast, wings, and tail are glossy black, while the belly, lower back, and undertail are white. Feeds in the understory and on the ground, frequently raising its tail to reveal reddish-brown vent. Shy and inconspicuous in its wooded habitats, but its presence is often given away by its song, which consists of mellow guttural trills and whistles.