The Long-tailed Duck is circumpolar, breeding on the Arctic coasts of North America (Canada, Alaska, USA and Greenland), Europe (Iceland and Norway), and Asia (Russia). It winters at sea further south, as far as the United Kingdom, South Carolina and Washington in the United States, Korea on the Asian Pacific coast, and other areas including the Black Sea and Caspian Sea¹. According to monitoring data from the Baltic Sea, where the western Siberian and northern European populations winter, the population there decreased by up to 70% between 1995 and 2009^14,15,16.