This rather large wagtail is the only resident among its group. It has a black head, back, and upper tail, with white underparts. A distinctive feature is its broad white eyebrow that extends from the base of the bill to the back of the head. It also has a broad white bar on the wing, visible both when perched and in flight. The female is usually a duller black than the male, while immatures have a shorter eyebrow, grayish-brown replacing black areas, and dirty white underparts. Very vocal, it gives a loud 3-4 noted whistle and a “psi-sit” flight call. It is mostly seen in pairs or family groups near any wet areas, including small pools in lawns and buildings, running around wagging its tail and flying with a distinctive undulating flight.