Drop in migrating monarch butterfly numbers in Mexico

MEXICO CITY (AP) — The number of Monarch butterflies making it to their winter refuge in Mexico dropped 59 percent this year, falling to the lowest level since comparable record-keeping began 20 years ago, scientists reported Wednesday.

This winter, the butterflies covered just 2.93 acres (1.19 hectares), down from 7.14 acres (2.89 hectares) last year.

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Read the rest here: http://www.nytimes.com/aponline/2013/03/13/world/americas/ap-lt-mexico-monarch-butterflies.html

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