Map | List
The Overwintering Season
Explore the monarch's winter habitat in Mexico and see what happens while the butterflies are there. More...
The monarchs overwinter in high mountain forests about 10,000 feet above sea level.
Report Your Sightings and Track Migration
Report your sightings each fall and spring as the monarchs travel to and from Mexico.
Track migration on real-time migration maps. Help scientists learn more about monarchs.
Report Your Sightings
What to Report | Where to Report
Spring Migration 2017
February - June
Watch this season's story unfold.
February 9 - June 15
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