Monarch butterflies' spectacular migration is at risk – an ambitious new plan aims to help save it
- Written by D. André Green II, Assistant Professor of Ecology and Evolutionary Biology, University of Michigan
Monarch butterflies cover a tree at El Rosario Monarch Butterfly Sanctuary in Michoacán, Mexico.D. André Green II, CC BY-NDOne of nature’s epic events is underway: Monarch butterflies’ fall migration. Departing from all across the United States and Canada, the butterflies travel up to 2,500 miles to cluster at the same...


