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Monarch butterfly migration faces threats from milkweed shortages
Entomologists warn the eastern monarch population is declining. Mike Martin of Monarch Research Project notes milkweed scarcity disrupts spring migration and fall nectar needs, with Iowa playing a key role as 38 percent of migrating monarchs pass through.
MENTIONED IN THIS ARTICLE
Mike Martin
Monarch Research Project
Marion
Cedar Rapids
Linn County
Mexico
Martin
Iowa