Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California coast, ...

In late 2024, a tagged monarch named Lionel migrated from New Jersey to Florida, logging thousands of detections along the ...

Monarch butterfly count at Pismo State Beach Monarch Grove was only 471 in 2025. The counts have been falling in the ...

For the first time in California, citizen scientists can join the effort to track monarch butterflies thanks to Blu+, a new ...

Van der Heide got her start at Cal Poly, tagging monarchs by numbering their wings in Sharpie and trying to find them later ...

Monarch butterflies (Danaus plexippus) have long been known for their impressive migration abilities, with North American species traveling around 3,000 miles from the United States and Canada into ...

An international collaboration to track individual monarchs kicked off this fall, including James Madison University.

The number of monarch butterflies in California is in sharp decline this year, and biologists say record-high late summer temperatures and drought in the west likely contributed to the dropoff. The ...

Monarch butterflies from the western United States have arrived in Santa Cruz and other parts of the California Coast, clumping in the thousands on branches of Monterey pine, coastal redwoods and ...

Below is a press release from California State Parks Foundation urging California residents to be on the look out for Monarch Butterflies SAN FRANCISCO, Calif. – As California Biodiversity Day ...

This is an archived article and the information in the article may be outdated.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. ST. LOUIS COUNTY, Mo. – Say the word ...

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 annual survey, ...