A daring surgical procedure has given a doomed monarch butterfly a new lease of life. The delicate operation was captured on film, and you can see it for yourself in this extraordinary Instagram ...

A first look at new research from the forests of central Mexico.

Two new reports estimate a 64% increase in species population and a significant decrease in forest degradation in the butterfly's winter home ...

WASHINGTON— The annual count of migratory monarchs who spend the winter in Mexico was released today and shows that the ...

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

From swallowtails to painted ladies, meet some interesting caterpillars you might find in your yard — and find out about the ...

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

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

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 ...

It’s a sunny July afternoon, and Grayslake neighbors Annie Lawson and Heather Bauer are standing at the side of Lawson’s home, carefully going through her garden of milkweed plants. Lawson points at ...

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

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) ...