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Every fall, a magical event takes place—the annual monarch migration to Mexico. Perhaps traveling over your own head right now—or clustered by the hundreds in a nearby tree—monarchs are on the move. By instinct alone, they migrate to mountain sanctuaries in Mexico where they've never been before.

We look on with wonder:

  • How do the monarchs know when to go to Mexico?
  • How do they know which way to fly?
  • How fast, how far, and how high do they travel?

Travel with the monarchs this fall. Find out what's known about these migration mysteries, and how much more we can discover.

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Report Your Sightings and Track Migration
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Report your sightings to 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.

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