Migrating Monarch Numbers Rebound

The iconic butterflies have flocked to their Mexican overwintering grounds, seemingly reversing recent population declines.

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Monarchs in Michoacan, MexicoWIKIMEDIA, SCOTT CLARKResearchers and conservationists are breathing guarded sighs of relief after a new analysis of the area of forest covered by monarch butterflies at hibernation sites in central Mexico last year was more than three times larger than the previous year. The World Wildlife Fund (WWF) announced the findings in Mexico City last week (February 26).

While the 10 acres that hibernating monarchs covered in Michoacán State and Mexico State was more than the 2.79 acres they covered in 2014 and the 1.66 acres they covered in 2013, it is nowhere near the approximately 45 acres the insects covered in 1996. “Now more than ever, Mexico, the United States, and Canada should increase their conservation efforts to protect and restore the habitat of this butterfly along its migratory route,” Omar Vidal, director general for WWF-Mexico, said in a statement.

Daniel Ashe, director of the US Fish and Wildlife Service, agreed. “We are seeing the beginning of success,” he told The New York Times. “Our task now is to continue building on that success.”

Though the issue of monarch butterfly decline is ...

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  • Bob Grant

    From 2017 to 2022, Bob Grant was Editor in Chief of The Scientist, where he started in 2007 as a Staff Writer.
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