Large, unique, sooty-colored chat with a proportionately small head and long broad white-tipped tail (except on central feathers), often seen only on spread tail. White spots in wings are obvious only in flight. Immature is paler. Pairs and family groups prefer rocky granite hills and outcrops that have light tree cover, especially embedded within Mopane and Miombo woodland. Mobile, they scuttle and bound over rocks and perch in trees, tail regularly raised or fanned. Gives a loud varied collection of high-pitched whistles and trills, often likened to a squeaky wheel.