An annual count of monarch butterflies conducted by the United States and Mexico as the insects migrate back and forth over ...

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

A newly released survey of the eastern monarch’s 2025-26 winter population in Mexico showed a 64% increase over 2024-25.

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Add Yahoo as a preferred source to see more of our stories on Google. Monarch butterflies have begun fluttering across Michigan after a migration that began in Mexico. The brightly colored insects ...

The California State Parks Foundation is asking Californians to track sightings of western monarch butterflies to help save the dwindling insect population. The California State Parks Foundation, a ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate change ...

MONARCH This is a recent photo of the now-rare monarch butterfly, submitted with location by a local hiker to the citizen-scientist app, iNaturalist. The app crowdsources observations of wild nature ...

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 post.

Why the monarch butterfly has such cultural meaning for the Mexican community. Monarch butterflies may be moving toward federally protected status. One local resident is taking it upon herself to help ...