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Pomarine Skua Stercorarius pomarinus (L 42-50cm) shares some plumage similarities to Arctic Skua but is appreciably larger, with deep, powerful wingbeats, and long, spoon-shaped tail streamers in adults. Two adult forms occur: dark morph (uniformly dark) is seldom seen while pale morph is more regular; it has white neck and belly, dark grey-brown upperparts, yellow-flushed cheeks and a dark breast band. Juvenile has variably barred dark, grey-brown. Outer Hebrides and NW Ireland are migration hotspots for Pomarine Skuas.