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Calidris alpina
Is a small wader, which breeds in Arctic or subarctic regions. An adult Dunlin in breeding plumage shows the distinctive black belly which no other similar-sized wader possesses. The winter Dunlin is basically grey above and white below. Juveniles are brown above with two whitish "V" shapes on the back. They usually have black marks on the flanks or belly and show a strong white wingbar in flight.
The Dunlin moves along the coastal mudflat beaches it prefers with a characteristic "sewing machine" feeding action, methodically picking small food items. Insects form the main part of the Dunlin's diet on the nesting grounds; it eats mollusks, worms and crustaceans in coastal areas. These were seen in the beach near Saxa Vord in Unst in the late evening.
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