Breeds western North America from south-eastern Alaska, south-western Yukon, British Columbia and south-western Alberta southern in USA to Oregon. Non-breeding south to Arizona and southern California.
petrophilus (Oberholser, 1919) - Unalaska, in eastern Aleutians.
stevensoni (Oberholser, 1930) - Western Alaska Peninsula, including Amak I and Amagat I.
ochroleucus Rea, 1986 - Islands of Baranoff, Admiralty, Chichagof, Mitkof and Kupreanof, off southern Alaska Peninsula.
semidiensis (Brooks, WS, 1915) - Semidi Is, off southern Alaska Peninsula.
helleri (Osgood, 1901) - Kodiak I and Afognak I, off southern Alaska.
pacificus (Baird, 1864) - Breeds western North America from south-eastern Alaska, south-western Yukon, British Columbia and south-western Alberta southern in USA to Oregon. Non-breeding south to Arizona and southern California.
muiri Rea, 1986 - Coastal western USA from south-western Oregon south to central California.
obscurior Rea, 1986 - Interior western USA from Oregon (southern from Cascades) south to east-central California (also on central coast southern from San Francisco Bay) and Nevada.
salebrosus Burleigh, 1959 - Interior British Columbia to north-eastern Oregon and western Montana.