With vigorous debate surrounding the health of the monarch butterfly, new research from the University of Georgia may have answered the biggest question plaguing butterfly researchers. Why are the ...

Monarch butterfly populations in North America have been in dramatic decline for several decades. But in a glimmer of hope for the iconic orange-and-black species, the 2025 population estimate was ...

A conservation group says that monarch butterfly populations fell dramatically last year, claiming they counted 96% fewer butterflies than the previous year. Federal officials are now taking action to ...

Conservation groups sued the Fish and Wildlife Service for its failure to formalize a protection proposal made under the Biden administration.

SANTA CRUZ — Conservationists are concerned that western monarch butterflies may be teetering on the brink of collapse as the latest Western Monarch Count reveals a devastating decline. The 28th ...

Monarch butterflies (Danaus plexippus) appear to be declining not just in North America but also in Australasia. Could this be a consequence of global change, including climate change, the ...

For years, home gardeners have been told to do one thing to save monarch butterflies: plant milkweed, the only plant monarch caterpillars eat. And for years, that’s what Linda Barber Auld, known as ...

If it feels like there are fewer bugs now than there were decades ago, it’s not just nostalgia. Scientists estimate that, due to factors such as pesticide use, habitat loss, and climate change, as ...

Western monarch butterflies at Natural Bridges State Beach, California, one of the top four overwintering sites for the species. (Photo courtesy of California State Parks Foundation) The Western ...

Add Yahoo as a preferred source to see more of our stories on Google. Sep. 5—With a small black device attached to its body, the colorful butterfly took to the air, flapping its wings and flitting ...

In January, I had the life-changing experience of visiting the high-altitude oyamel fir forests of the Trans-Mexican volcanic belt, where most eastern monarch butterflies overwinter. Although the ...