A fairly small bird of wooded areas on the Bay Islands. Low crest is flattened at the front and rounded at the back. Male is glossy black with a purplish-blue iridescence. Female is medium gray above, pale gray below with brownish flight feathers and a darker mask, contrasting with the pale throat. Male similar to male Shining Flycatcher, but Biak is found in forest rather than waterside thickets and is smaller and less glossy. Often found in pairs and female has gray rather than rufous upperparts. Voice, a simple up-and-down whistled song and raspy call.