The Seattle Times

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Kirsten Luce / AP, 2005
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Wednesday, January 29, 2014

Monarch butterflies’ Mexico migration plunges

, Monarch butterflies gather on a tree at the El Rosario Butterfly Sanctuary near Angangueo, Mexico. A report released on Jan. 29 by the World Wildlife Fund, Mexico’s Environment Department and the Natural Protected Areas Commission blames the dramatic decline on the insect’s loss of habitat due to illegal logging in Mexico’s mountaintop forests and the massive displacement of its North American food source, the milkweed plant.