A distinctive rainforest greenbul with olive-brown upperparts, pale underparts, white spots on the wings, and white outer tail feathers. Found in the canopy of humid forest at low and middle elevations, usually in restless flocks of 5-15 individuals, but occasionally gathers by the dozens. Often flicks out one wing, an odd and distinctive behavior. Somewhat similar to nicators, but found in the canopy, and easily separated by the unhooked bill, the white tail edges, and the white rather than yellow spots on the back. Very vocal, constantly giving a penetrating “stick” call.