The colouring is dark grey-brown, darker on the upperparts with somewhat paler underparts, especially on chin and throat.

It forages for flying insects primarily in lowland forests and open areas.

The colouring is dark grey-brown, darker on the upperparts with paler underparts, especially on chin and throat.

It has been recorded as a rare vagrant to Australia, from Cape York Peninsula and islands in Torres Strait.

The nest is a shallow cup of mossy material and saliva, usually attached to a vertical surface of a cave wall in the completely dark zone.

On Guam, Neckeropsis lepiniana, is used as the nesting material and in Hawaii, a liverwort (Herberta spp.)