The Great Migration Takes the Tidal Trail

November 25th, 2014

Every year millions of Monarch butterflies migrate up to 4,830 miles from southern Canada and the USA to winter in groves in Mexico. The Monarchs that migrate in the fall are not the same ones that migrate back north five months later. The northern-migrating butterflies are at least five generations removed from overwintering sites! One researcher calls it […]

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