The Common Scoter is a large sea duck found primarily in northern regions of Europe and Asia. It is known for its distinctive black plumage in males, while females are brown with lighter markings. These ducks are often seen in coastal waters and are known for their diving abilities, feeding on fish and invertebrates. During the breeding season, Common Scoters prefer freshwater lakes and ponds, where they build nests on the ground. They are migratory birds, traveling to warmer areas during winter. Their population is affected by habitat loss and hunting, making conservation efforts important for their survival.