Ibis are common and widespread in northern and eastern Australia, preferred habitats include swamps, lagoons, floodplains and grasslands, but they have also become successful inhabitants of urban parks and gardens. Food includes both terrestrial and aquatic invertebrates and human scraps, he most favoured foods are crayfish and mussels, which the bird obtains by digging with its long bill. Mussels are opened by hammering them on a hard surface to reveal the soft body inside. Size 65-75 cm.