Black-Necked Swans are a typical white swan but with a black head and neck and large red knob at the base of the bill...perhaps the most attractive of all swans. Thier wings produce a whistling sound in flight. Cygnets are carried on the back of adults until quite large. The male is aggressive, chasing other waterfowl or any intruder from vicinity of nest. Take-off and landing executed with more difficulty than other swans...possibly because of relatively short legs. Feeds mainly in shallow water by dabbling and submerging head.
Size: length: 102-124 cm.
Male: Male larger and longer-necked than female. Head and neck velvet-black, except for lower portion, with a narrow white line extending from forehead to a little behind the eye. Remainder of plumage completely white.
Female: Similar to male, but smaller.
Habitat: Freshwater marshes and shallow lakes, coastal lagoons.