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The Red Knot and Long-Distance MigrationThe Red Knot and Long-Distance Migration
The red knot is a migratory shorebird that travels up to 20,000 km twice a year from its breeding grounds on the high Arctic tundra to its southern non-breeding sites. Along with having one of the longest total migrations of any bird, some populations also fly as much as 8,000–9,000 km between stopover sites in a single flight. As a shellfish-eating specialist avoiding pathogen-rich freshwater habitats, the red knot relies on the few large tidal flats with abundant food resources that the world has to offer. To undertake the physiologically demanding flight from West Africa to northern Siberia, for example, Calidris c. canutus refuels during three weeks of fast feeding in the national parks of Banc d’Arguin in Mauritania and the European Wadden Sea. After nearly doubling its weight, it burns off stored fat during the 3 or more days of non-stop flying.
Knots (Calidris canutus islandica) on the way from the Wadden Sea to Greenland just landed at the South Coast of Iceland
Knot (Calidris canutus canutus) with young, Sterlegova , 75.26N89.09E, Taimyr, Russia, July 1990
One-day old Red Knots (Calidris canutus canutus), Sterlegova , 75.26N89.09E, Taimyr, Russia, July 1990
Knot (Calidris canutus canutus) breeding, Sterlegova , 75.26N89.09E, Taimyr, Russia, July 1990
Knot (Calidris canutus canutus) Nest, Sterlegova , 75.26N89.09E, Taimyr, Russia, July 1990
Knot (Calidris canutus canutus) breeding, Sterlegova , 75.26N89.09E, Taimyr, Russia, July 1990
Red Xanthoria Lichen, Olrik Fjord, North-West Greenland
Breeding habitat of Red Knots (Calidris canutus iskandica), Thule, Greenland
One day old Red Knots (Calidris canutus iskandica), Thule, Greenland
Red Knot (Calidris canutus iskandica) in breeding habitat, Thule, Greenland
Nest Red Knot (Calidris canutus iskandica), Thule, Greenland
Macoma balthica (Baltic clam), German Wadden Sea
Red Knots (Calidris canutus islandica) at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica) at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
Red Knots (Calidris canutus islandica,) feeding at Porsanger Fjord, Northern Norway
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