eastern Kamchatka and the Aleutian Islands.
Sometimes placed in genus Stictocarbo or occasionally in Leucocarbo, but classification here follows results of a comprehensive molecular phylogeny for the entire family#R. Recently proposed form U. kenyoni (described from bones of three individuals caught in late 1950s in fishing nets on Amchitka, in Aleutian Is) subsequently shown to refer to small females of present species#R. Two subspecies recognized.
Food and feeding
Status and conservation
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