Quantifying the relative impact of hunting and oiling on Brünnich’s guillemots in the North-west Atlantic
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Brünnich’s guillemot is an abundant pan-Arctic seabird, but several Atlantic breeding populations are declining by up to 6% per year. They are subject to traditional hunting in the wintering areas off west Greenland and Newfoundland, as well as chronic oil pollution in eastern Canada. Until recently, poor knowledge of the winter distribution has limited the possibility to assess the impact of these mortality sources on specific breeding populations.