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Antigua and Barbuda,Canada,Czech Republic,Denmark,Finland,France,Germany,Greenland,Iceland,Ireland, Japan,Mexico,Netherlands,Norway,Poland,Russia,Slovenia,Spain,Sweden,Ukraine, United Kingdom,United States - Alaska,United States - mainland,
IOC 11.2 Subspecies
ne Canada, n Greenland to Svalbard and Franz Josef Land
se Canada, w, s Greenland and Iceland to w, n Europe and Novaya Zemlya