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Monarch butterflies such as this one will be tagged Saturday with a round sticker attached to the wing with information to contact University of Minnesota-Crookston. Herald photo by Jackie Lorentz.

Monarch butterfly population fluttering downward

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The monarch butterfly, with its distinct orange and black coloring, is one of North America's most recognizable insects.

It's also one that's quickly disappearing.

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A recently published study reports the number of monarch butterflies worldwide has been reduced by half. The study, published in the journal Insect Conservation and Diversity, says the use of genetically modified corn and soybeans in the central United States is partly at fault.

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