An unusual shorebird that is so distinctive that it has been placed in its own family. The back is blue-gray and the underparts salmon; the head and breast are boldly marked with black and white. Immatures are duller, but still distinctive. In flight, shows a striking pattern of black and white in the outer wing. Found mostly on sandbars in slow-flowing rivers, rarely in other wetland habitats. The call is a “tchep” that is often repeated, especially in flight.