Seabirds
Thick-billed Murres
Uria lomvia
ALSO KNOWN AS
Brünnich’s Guillemont
DISTRIBUTION
Circumpolar, Arctic and Subarctic
ECOSYSTEM/HABITAT
Nest on coastal cliffs; feed in the ocean
FEEDING HABITS
Active (diving) predator
TAXONOMY
Order Charadriiforms (sandpipers, plovers, gulls, auks); Family Alcidae (auks)
SHARE
Thick-billed murres are a marine bird and the largest living member of the auk family. One of the most common Arctic bird species, these murres are deep-diving predators and regularly dive to depths of 100 metres in pursuit of prey such as fish, squid, crustaceans, polychaetes and molluscs. Incredibly, they are capable of diving deeper than 200 metres and staying submerged for more than three minutes! Thick-billed murres live in large groups called colonies, which sometimes can reach sizes of more than one million adult birds. They can be found in these dense aggregations during the breeding season on coastal cliffs. In Canada, populations of thick-billed murres can be found in British Columbia, Hudson’s Bay and all along the east coast.