Great Thick-knee is an uncommon breeding resident in the dry lowlands. It inhabits large tank edges, lagoons and estuaries. It is nocturnal and crepuscular in habit while resting in open areas during the day time. Usually it encounters as pairs or small flocks. It feeds on insects, crabs, worms and mollusks. Breeding season lasts from January to August and lays one or two eggs on ground generally not far from water.