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U.S. Migration of Monarch Butterflies Shrinks Again Under Inhospitable Conditions

By   /  February 1, 2014  /  News, Uncategorized  /   Comments

A Monarch butterfly in Mexico. The number of surviving butterflies has varied from year to year, sometimes wildly, but the decrease in the size of the migration in the last decade has been steep and generally steady. Marco Ugarte/Associated Press

Tweet By MICHAEL WINES Faltering under extreme weather and vanishing habitats, the yearly winter migration of monarch butterflies to a handful of forested Mexican mountains dwindled precipitously in December, continuing what scientists said was an increasingly alarming decline. The migrating population has become so small — perhaps 35 million, experts guess — that the prospects [...]

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