Each year, millions upon millions of monarch butterflies migrate from the Eastern U.S. and Canada all the way to Central Mexico where they spend the winter enclosed in a warm canopy of fir trees.  But according to the Environmental News Network, illegal logging in the area is threatening this winter refuge, and even a crackdown by Mexican officials is failing to slow deforestation.  Experts explain that when the canopy of trees is closed, it’s like a blanket – and even small holes in the forest canopy can expose butterfly colonies to fatal winter chills.  So here’s hoping local authorities will show increased vigilance to protect these beautiful fluttering flyers.

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