Speculanas specularis
The Bronze-winged Duck (Speculanas specularis) is a distinctive, medium-sized waterfowl species, measuring approximately 46-54 cm (18-21 inches) in length with a robust build. Its plumage is predominantly a rich, sooty dark brown, contrasting sharply with its most iconic field mark: bright white "spectacles" or rings around the eyes and a prominent white chin and throat. The species earns its name from the brilliant, iridescent bronze-green speculum visible on its secondary flight feathers, o...
Primarily found along swift-flowing, clear mountain rivers and streams, forested lakes, and marshy bogs, often at elevations up to 1,800 meters, though also at sea level in some southern regions. It favors areas with dense riparian vegetation for cover and nesting.
Feeds predominantly on aquatic invertebrates (larvae, crustaceans), small fish, and occasionally consumes seeds and leaves of aquatic plants. Foraging is done by dabbling, up-ending, and diving in clear, fast-flowing waters.
The Bronze-winged Duck is typically observed in pairs or small family groups, rarely forming large flocks, and often exhibits a wary demeanor. During the day, it forages actively, primarily employing dabbling and up-ending techniques in shallow waters to sift through aquatic vegetation and substr...
The Bronze-winged Duck is endemic to southern South America, with its primary distribution concentrated along the Andes Mountains and associated lowlands. Its breeding range extends from central Chile and western Argentina south through Patagonia to Tierra del Fuego. In Chile, it is found from Sa...
Least Concern
- The Bronze-winged Duck is the sole member of its genus, *Speculanas*, highlighting its unique evolutionary path among waterfowl. - Despite being primarily a dabbling duck, it is an exceptionally strong swimmer and diver, skillfully navigating the turbulent, cold waters of mountain streams. - It...