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6-8

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Part of NOVA
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Marathon Migrators

There are many strategies animals use for staying close to their food sources, as this video segment from NOVA: "The Mystery of Animal Pathfinders" explains. One of the most remarkable of these strategies, however, is demonstrated by the red knot, a species of shorebird that flies 20,000 miles annually in its never-ending search for food, especially the eggs of spawning horseshoe crabs.

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