Watch as fluttering swarms of monarch butterflies return to the warm weather of Mexico in their annual journey, how the cold and snowy weather is affecting countries around the world, and more of ...

Monarch butterflies have a unique multigenerational migration pattern, leading to behaviors not seen in other butterfly species. This means they exhibit some amazing behaviors that are not seen in ...

Why Do Monarch Butterflies Swarm? Monarch butterflies, like other butterfly species and birds, must migrate to warmer climates during the cold winter months. Monarch butterflies are unique because ...

MEXICO CITY (AP) — The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, ...

By Claudia Steiner The monarch butterfly (Danaus plexippus) population has plummeted by 80% to 95% since the 1990s, depending ...

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 ...

CERRO PRIETO, Mexico If you'd rather see butterflies on a mountaintop than slather yourself with sunblock on a tourist-packed beach, then Mexico is an ideal winter destination. Ecotourism is drawing ...

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This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. MEXICO CITY (AP) — The number of monarch ...