Unmistakable large black swan with a red bill. When swimming this species is almost entirely black, with curly feathers just above the tail (tertials). In flight, note the wings have extensive white ends (primaries and outer secondaries). Juveniles are similar but dark-gray. Compare to Magpie Goose which has white belly, and white underwing with black tips. Typically found along inland waterways, rivers, sewage ponds, and coastal lagoons and inlets. Sometimes flocks together in enormous numbers on large wetlands.