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Tiny Tags, Big Discoveries
Thousands of citizen scientists across North America tag and release monarchs every fall. Tags are tiny, light-weight, round stickers. They are a little larger than a hole-punch, about 9 mm in diameter. Each tag has a unique ID number. When a tag is recovered (found again), valuable information about migration is revealed. This week, check out our collection of true stories about tagged monarchs.

Jim Gagnon
Monarch Butterflies nectaring in Iowa prairie

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