Scientists used tiny new sensors to follow the insects on journeys that take thousands of miles to their winter colonies in ...

This year, 500 monarch butterflies began their annual migration wearing a tiny tracker that weighs less than a grain of rice.

After flying some 3,000 miles from the northern U.S. and Canada to a remote forest in Central Mexico for the winter, tens of millions of monarch butterflies are making their way back north. These are ...

Texas A&M scientists study how roads, wind and conservation affect one of nature’s most extraordinary journeys.

Monarch butterflies have begun fluttering across Michigan after a migration that began in Mexico. The brightly colored insects have been reported in southeast Michigan, migration watchers say.

Hundreds of Monarch butterflies are lingering on Cat Island instead of continuing their migration to Mexico, prompting a Mississippi State University researcher to investigate the unusual behavior.

MEXICO CITY (AP) — The first monarch butterflies have appeared in the mountaintop forests of central Mexico where they spend the winter, Mexico’s Environment Department said Saturday. The first ...

The Monarch butterfly migration across Texas is one of North America’s most extraordinary natural events. Each year, millions ...

FARGO — Families had a chance to learn about monarch butterflies on Wednesday night, Aug. 20, as they began their migration. Urban Plains Park hosted a monarch butterfly tagging event Wednesday.

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 ...