A swiftlet of the Marquesas Islands, it has dark-brown upperparts, a grey rump, grey-brown underparts and a long, forked tail.
It has dark-brown upperparts, a grey rump and grey-brown underparts. The long tail is forked.
In 2003, birds around the Hitikau plateau on Ua Huka hunted above the low canopy, mostly in groups of about five to ten and occasionally alone.
It nests colonially in October, using shallow depressions beneath overhanging rocks, on coastal cliffs or in caves. The nest is made of plant material bound with saliva.
An extinction-risk assessment has not been added yet.