Adults are white with a bit of black on the wingtips. Red decurved bill and pinkish-red legs. Bright blue eyes. Immatures are half brown, half white. Forages in saltmarshes and shallow wetlands, often in flocks. In flight, flaps quickly and then glides on bowed wings. Accustomed to people in some parts of its range. It is commonly seen on lawns and in parking lots scavenging for food scraps.