ne Atlantic from s Iceland, Faroe Is., c Norway, Ireland and Scotland; nw Atlantic from s Labrador to Massachusetts; nw Pacific from ne Russia and ne Japan to Alaska and n, c Baja California (nw Mexico); also off sw Africa
Nonbreeding Range Subregions
to tropical Pacific Ocean mainly n of Tropic of Capricorn, and tropical Atlantic, reaching s Africa in temperate se Atlantic Ocean
Algeria,Angola,Anguilla,Australia,Austria,Bermuda,Brazil,British Virgin Islands,Canada,Cape Verde, Colombia,Costa Rica,Denmark,Dominica,Dominican Republic,Ecuador - mainland,El Salvador,Estonia,Faroe Islands,Finland, France,French Guiana,French Polynesia,Gambia,Ghana,Gibraltar,Guam,Guatemala,Guyana,Haiti, Honduras,Iceland,Ireland,Israel,Japan,Kiribati,Latvia,Liberia,Luxembourg,Marshall Islands, Mauritania,Mexico,Micronesia,Namibia,Netherlands,Netherlands Antilles,Northern Mariana Islands,Norway,Papua New Guinea,Peru, Poland,Portugal,Russia,Saint Kitts and Nevis,Senegal,Sierra Leone,South Africa,Spain,Suriname,Sweden, Switzerland,Trinidad and Tobago,United Kingdom,United States - Alaska,United States - Hawaii,United States - mainland,Venezuela,Western Sahara,
IOC 13.1 Subspecies
Group
Subspecies
Breeding Range
leucorhous
islands of ne Atlantic from Westmann (s of Iceland), Faroe, Lofoten and Erkna (w of c Norway) and n of Ireland and Scotland; islands of nw Atlantic coast and Gulf of St. Lawrence from Herring (s Labrador) to Penikese (sw of Cape Cod, Massachusetts); islan
chapmani
Coronado and San Benito is. (w of nw, nc Baja California, nw Mexico)
Africa (entire continent rather than south of Sahara)
AN
Antarctica
AO
Atlantic Ocean
AU
Australasia (Wallacea (Indonesian islands east of Wallace's line), New Guinea and its islands, Australia, New Zealand and its subantarctic islands, the Solomons, New Caledonia, and Vanuatu)
PAL
Eurasia (Europe, Asia from the Middle East through central Asia north of the Himalayas, Siberia and northern China to Japan)
IO
Indian Ocean
LA
Latin America (Middle and South America)
MA
Middle America (Mexico through Panama)
NA
North America (includes the Caribbean)
NO
Northern oceans
OR
Oriental Region (South Asia from Pakistan to Taiwan, plus Southeast Asia, the Philippines, and Greater Sundas)