IUCN threat status:

Least Concern (LC)

Distribution

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Red-breasted mergansers have a holarctic distribution; they are found throughout much of the northern hemisphere. Red-breasted mergansers have distinct breeding and wintering ranges, although they overlap somewhat in northern, coastal areas. In the Americas they breed from Alaska throughout northern, boreal Canada to the maritime provinces and into the northern United States: Minnesota, Wisconsin, Michigan, and Maine. They breed in Greenland and Iceland and in Eurasia from the Faroe Islands, Ireland, and Scotland through Scandinavia, northern Russia and Asia to Siberia and the Kamchatka Peninsula. They may also breed in northeastern China, northern Japan, and as far south as northern Germany, Lake Baikal, Manchuria, and the Sea of Okhotsk. Red-breasted mergansers winter in coastal areas, including the Atlantic, Pacific, Gulf of Mexico, Great Lakes coasts, and other large, inland waterways as far south as northern Mexico in the Americas and the Baltic, North, Mediterranean, Black, Caspian, and Aral Seas in Eurasia. They sometimes wander as far south as portions of the Red Sea and to the Hawaiian Islands in winter. They are found throughout the year in northern coastal areas, including Iceland, parts of the British Isles, southeastern Alaska and the Aleutian Islands, coastal areas of Maine and the Canadian maritime provinces, and the northernmost lower peninsula of Michigan and northern shore of Lake Michigan.

Biogeographic Regions: nearctic (Native ); palearctic (Native ); arctic ocean (Native ); atlantic ocean (Native ); pacific ocean (Native ); mediterranean sea (Native )

Other Geographic Terms: holarctic

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Source: Animal Diversity Web

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