This species is endemic to Mayotte. It is recorded in humid natural forest at about 200–350 m, as well as secondary forest, plantations, and forest margins.
It has sooty-black plumage and a long, forked tail.
Pairs hold territories throughout the year and perform a dancing duet with their forked tails. They catch insects in flight and in vegetation, and also search bark and the ground for food, including spiders.
An extinction-risk assessment has not been added yet.