Canada (B) (NB), Faroe Islands, Greenland (B) (NB), Iceland (B) (NB), Japan, Norway (B), Russia (Asian) (B), Russia (Central Asian), Russia (European) (B), St Pierre and Miquelon (NB), Svalbard and Jan Mayen Islands (B), USA (B).
Vagrant to Austria, Belgium, Denmark, Finland, France, Germany (NB), Ireland, Latvia, Netherlands Antilles, Poland, Portugal, Romania, Spain, Sweden, United Kingdom.
Population
Estimated population is 22,000,000 (2010).
Voice
Throaty roaring 'aoorrr', 'quaaaaaa' or 'kuakuakuaaaa', slightly lower-pitched, harder and more crow-like than Common Murre (Uria aalge). Juveniles at sea give a low plaintive whistle.
Thick-billed Murre (Uria lomvia) [XC487905]
by Stanislas Wroza from Westfjords Region, Iceland (call, song)
Thick-billed Murre (Uria lomvia) [XC817317]
by Stanislas Wroza from Svalbard, Norway (call)
Subspecies
The following 4 subspecies are recognised:
lomvia (Linnaeus, 1758) - North-eastern Canada south to Gulf of St Lawrence, and Greenland east to Franz Josef Land, Novaya Zemlya and Severnaya Zemlya.
eleonorae Portenko, 1937 - Eastern Taymyr Peninsula east to New Siberian Is.
heckeri Portenko, 1944 - Wrangel I, Herald I and northern Chukotskiy Peninsula.
arra (Pallas, 1811) - Northern Pacific, from north-western Alaska south to northern Japan, Aleutians and south-eastern Alaska.