Unusual and distinctive paradise-flycatcher. Adult males are completely glossy blue-black with extremely long tail streamers. Female has a black head, rufous upperparts, and white underparts, and lacks tail streamers. Both sexes have a blue ring of bare skin around the eye. Endemic to the Seychelles, where it is found mainly on the islands of La Digue and Denis. Habitat is thick indigenous woodland. A restless, active bird of middle levels of the forest. Calls include a tearing “shreeet” and an agitated twittering. The song is a long, musical, slightly descending series of “twee” notes.