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 ...

Every year, millions of Methuselah or super generation monarchs overwinter in the oyamel fir forests of Central Mexico after a 3,000-mile journey from Canada. Then in spring, they start the whole ...

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

MEXICO CITY (AP) — The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, doubling the area they covered in 2024 despite the stresses of climate change ...

A journey from Austin, Texas to the volcanic mountains of central Mexico leads to an unforgettable encounter with millions of monarchs wintering in the Monarch Butterfly Biosphere Reserve. Highlights: ...

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

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 ...

This is an archived article and the information in the article may be outdated.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 ...

FILE - A Monarch butterfly rests near a stream at Piedra Herrada sanctuary in the mountains near Valle de Bravo, Mexico, Jan. 4, 2023. (AP Photo/Marco Ugarte, File) MEXICO CITY (AP) — The number of ...