The Black-winged Stilt is a large black and white wader with long orange-red legs and a straight black bill. It has black on the back of the neck, a white collar and a red iris. Both sexes are similar, and the plumage does not change during the year. Black-winged Stilts give a repeated high-pitched barking call. Young Black-winged Stilts lack black on the back of the neck and have grey-brown wings and back, speckled with white. They have a smudged grey crown, which extends down the back of the neck as the birds get older.
The Black-winged Stilt has a wide range, including Australia, Central and South America, Africa, southern and south-eastern Asia and parts of North America and Eurasia. More locally it also occurs through Indonesia, New Guinea, the Solomon Islands, the Philippines and New Zealand. Although widespread on the Australian mainland, it is an uncommon visitor to Tasmania.
The Black-winged Stilt is a social species, and is usually found in small groups. Black-winged Stilts prefer freshwater and saltwater marshes, mudflats, and the shallow edges of lakes and rivers.
Black-winged Stilts feed mainly on aquatic insects, but will also take molluscs and crustaceans. They rarely swim for food (unlike the Banded Stilt), preferring instead to wade in shallow water, and seize prey on or near the surface. Occasionally, birds plunge their heads below the surface to catch sub-aquatic prey.
As with other activities, Black-winged Stilts nest in small colonies; within these, the mated pairs strongly defend their individual territories. The nest may be anything from a simple shallow scrape on the ground to a mound of vegetation placed in or near the water. Both sexes incubate the eggs and look after the young.