Monarch butterflies are making their annual journey north out of Mexico to their summer breeding grounds. See where they've been spotted in Oklahoma.

Following a migration that started in Mexico, monarch butterflies have reached Michigan. Here's where they've been spotted.

Monarch migration map showing monarch sightings represented with green dots. As of April 20, they are inching closer to Michigan.

For thousands of years, millions of monarch butterflies have migrated from the northern U.S. and Canada to Mexico for the winter. But exactly how they know where to go is still a mystery.

Monarch butterflies are returning to Michigan for the summer after migrating from Mexico. Michiganders can support monarch butterflies by planting milkweed, tracking sightings, and donating to ...