Free Picture Tagged Red Knot Birds Calidris Canutus Rufa Overview. a robin sized shorebird, the rufa red knot is truly a master of long distance aviation. on wingspans of 20 inches, some rufa red knots fly more than 9,300 miles from south to north every spring, and repeat the trip in reverse every autumn, making this bird one of the longest distance migrants in the animal kingdom. Free photo: tagged, red, knot, coast, birds, calidris canutus rufa, knot birds, birds, bird, coast, knot, red.
Free Picture Tagged Red Knot Coast Birds Calidris Canut The rufa red knot's spring migration is timed to coincide with the horseshoe crab's spawning season, as the massive outlay of eggs provides a rich, easily digestible food source for the exhausted birds. delaware bay shores provide the single most important spring stopover area for the red knot, hosting within a narrow time window up to 90 percent of the north american population. Tringa canutus linnaeus, 1758. the red knot or just knot (calidris canutus) is a medium sized shorebird which breeds in tundra and the arctic cordillera in the far north of canada, europe, and russia. it is a large member of the calidris sandpipers, second only to the great knot. [2] six subspecies are recognised. The endangered canadian subspecies of the red knot, calidris canutus rufa, has come to attention in recent years given its 70% decline in abundance in a span of 15 years as of 2016 1. the rufa red knot is part of the sandpiper family, therefore having typical sandpiper characteristics: a long, streamlined body, long legs, and a long narrow bill to probe for food 2 . The red knot (calidris canutus rufa) is on a fast track to extinction. for decades, photographers, bird watchers and nature enthusiasts have gone to the shores of the delaware bay to view and record two of nature’s great spectacles. hundreds of thousands of horseshoe crabs, one of the oldest animals on the planet, come to lay their eggs on.
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