Just over 9,000 monarchs were counted in California last winter, the second lowest ever since the annual count began in 1997 ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...

Newly released data shows that the number of monarch butterflies migrating to California this winter is near-record low. "We ...

A winter count of visiting monarch butterflies found a steep drop from previous years, which has scientists worried about the ...

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

Once, millions of monarchs wintered in California. But climate change, habitat loss, widespread pesticide use and disease ...

Scientists are grappling with a stark population decline of the western monarch butterfly after the species’ numbers hit a ...

This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in California this winter, a foreboding sign for the future of the beloved ...

Hundreds of volunteers and partners participated in the 28th annual Western Monarch Count by attempting to identify all of ...