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Pomarine Skua (Stercorarius pomarinus), Sterlegova, Great Arctic Reserve, Taimyr, Russia
The Pomarine Skua breeds in the Arctic tundra of Eurasia and North America and winters in the southern hemisphere. The species is marine outside the breeding season, remaining somewhat coastal, especially in upwelling regions of the tropics and subtropics. Whilst breeding it specialises on catching lemmings which frequently constitute over 90% of their diet. Breeding at scattered sites across the tundra where lemming concentrations are high.