Anser Cygnoides, also known as the swan goose, is a large bird species that is native to East Asia. Its scientific name is derived from the Latin words "anser," meaning goose, and "cygnoides," meaning resembling a swan. Some synonyms for Anser Cygnoides include the Chinese goose, the Tundra swan goose, and the Siberian goose. These birds are recognizable for their distinctive black and white feathers, long necks, and loud honking calls. They are migratory and travel in flocks to breed and feed. Despite being classified as a species of "least concern" by the International Union for Conservation of Nature, their populations are threatened by habitat loss, hunting, and disease.