The red-bellied paradise flycatcher (Terpsiphone rufiventer), also known as the black-headed paradise flycatcher, is a medium-sized passerine bird native to West Africa. The male bird is about 17 cm (7 in) long and has a black head, a mainly chestnut body, and a tail with streamers nearly twice as long as the body. The colouring is somewhat variable across the bird's range. Both females and juveniles lack the tail streamers and are a duller brown colour. it is closely related to the African paradise flycatcher, and the two can hybridise.