Bill stout, wide at the base, compressed in front; culmen curved throughout, upper mandible very high ; nostril a narrow-longitudinal slit, parallel to the commissure and close to it. Sides of the head naked and papillose, the bare skin extending across the forehead all round the base of the upper mandible ; no eyelashes. Tail long, broad, and graduated ; wing rounded. Feathers of crown and throat with stiff projecting shafts. Sexes only differing in the colour of the iris.
A single species.