13CMS.,BLACK WITH WHITE WING-PATCH,RUMP AND VENT,OFTEN SEEN IN FIELDS AND GRASSLAND WITH BUSHES,SCRUB,TEA GARDENS.THEY PICK UP INSECTS MAINLY FROM THE GROUND.THEY NEST IN CAVITIES IN THE STONE WALLS OR IN HOLES IN AN EMBANKMENT.MALES ARE BLACK WITH WHITE SHOULDER AND VENT PATCHES, BILL AND LEGS ARE BLACK.FEMALES ARE PREDOMINANTLY BROWNISH.THEY ARE INSECTIVOROUS.