The Grey Heron is a wading bird of the heron family Ardeidae. It is a large bird, standing 90-100 cm tall, with a 175-195 cm wingspan and a weight of 1-2 kg. Its plumage is largely grey above, and off-white below. Adults have a white head with a broad black supercilium and slender crest, while immatures have a dull grey head. It has a powerful, pinkish-yellow bill, which is brighter in breeding adults. It has a slow flight, with its long neck retracted (S-shaped). This is characteristic of herons and bitterns, and distinguishes them from storks, cranes and spoonbills, which extend their necks. The call is a loud croaking "fraaank". The Australian White-faced Heron is often incorrectly called Grey Heron. It feeds in shallow water, catching fish, frogs, and insects with its long bill. Herons will also take small mammals, reptiles and occasionally walbler nestlings, plovers, young and adult snipes, takes ducklings and tern chicks and other small birds.  It will often wait motionless for prey, or slowly stalk its victim. This species breeds in colonies in trees close to lakes, the seashore or other wetlands, although it will also nest in reedbeds. It builds a bulky stick nest.