The whooper swan is a large waterbird known for its striking white plumage and long neck. It typically measures about 125 to 165 centimeters in length and has a wingspan of 205 to 250 centimeters. These swans are found in parts of Europe and Asia, often migrating to warmer regions during winter. Whooper swans are social birds, usually seen in pairs or small groups. They feed primarily on aquatic plants, grains, and grasses. Their distinctive, loud trumpeting calls are a key feature, especially during courtship displays. These swans are also known for their strong pair bonds, often mating for life.