Genus Coscoroba is a taxonomic classification belonging to the family Anatidae, which includes birds commonly known as Coscoroba swans. Genus Coscoroba consists of a singular species, Coscoroba coscoroba. These swans are large, graceful waterfowl found primarily in South America.
Coscoroba swans are characterized by their striking white plumage, long necks, and black bills. They possess a slender body and a wingspan measuring approximately 150-190 centimeters, making them some of the largest waterbirds in their range. With their distinct appearance, they are easily recognizable among other waterfowl species.
These birds are predominantly found in wetland habitats, both freshwater and saltwater, including lakes, marshes, lagoons, and estuaries in the southern parts of South America. They are known to undergo seasonal migrations, moving towards more favorable feeding and breeding locations.
The diet of Genus Coscoroba primarily consists of aquatic vegetation, seeds, leaves, stems, and sometimes invertebrates. They are proficient grazers, often feeding on submerged plants found in shallow waters. Unlike some other swan species, they do not engage in diving activities to feed.
Coscoroba swans are known for their monogamous mating system. They form lifelong pair bonds and often stick together year-round, even during migration. The breeding season typically occurs during the southern hemisphere's summer months, when these swans build relatively large nests on the ground, lined with down feathers and vegetation. The female usually lays 4-7 eggs, which are incubated by both parents for about 38-42 days.
Despite being relatively widespread in their range, Genus Coscoroba faces various threats, including habitat loss, pollution, hunting, and
