Monarch butterflies that migrate to Mexico each year covet forests in Estado de México and Michoacán. So often do cartels.

A total of 160 monarchs across Mexico’s six butterfly sanctuaries have been tagged with new transmitters that will provide the most detailed look to date at the first leg of the the insects' migration ...

Suitable milkweed habitat in Mexico may shift south, fracturing existing migration routes and possibly pushing some ...

Learn facts about the monarch butterfly, including how how to tell male and female monarchs apart and if monarchs are ...

New research shows climate change may push monarch butterflies farther south and make their long migration harder in the ...

Inside the Monarch Butterfly Biosphere Reserve, a new cultural center helps protect wildlife, and sustain the local community.

The monarch butterfly is iconic in North America — but in Montana, it is a rare sight. That’s why when landscaper Kathy Ross ...

AUSTIN (KXAN) — Monarch butterflies are back in motion, fluttering their way through Texas on a 3,000-mile journey that is part science, part magic, and all heart. While their wings may be delicate, ...

Biologists found just one monarch butterfly at Ellwood Mesa on Monday during the last butterfly count of the 2025-26 overwintering season. That ...

As temperatures rise, monarch butterflies begin their remarkable trek north, renewing one of North America’s most iconic ...

Monarch butterflies are important culturally and ecologically across North America. Generations have watched in wonder as yellow-and-black striped caterpillars fold into green-and-gold chrysalises and ...