The black swan is one of Australia’s most iconic waterbirds, instantly recognisable by its striking black feathers, bright red bill and impossibly graceful glide across lakes and wetlands. Found throughout much of the country, these social birds feed on aquatic plants by dipping their long necks beneath the water’s surface. Black swans form strong pair bonds and are often seen moving together in perfectly coordinated fashion. Healthy wetlands are essential for their survival, and organisations like Wetlands International work to protect these important habitats. Despite their calm, elegant appearance, they can be surprisingly aggressive when defending a nest — especially if you ignore the warning hiss.