The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in ...

Scientists are grappling with a stark population decline of the western monarch butterfly after the species ... susceptible to these factors and end up bouncing around in more significant ...

Overwintering populations of monarch butterflies in California have reached a near all-time low since records began, conservationists announced on Thursday. The ...

“Monarchs are the face of the wildlife extinction ... They need us because if we don’t act now to save them, monarch migrations will collapse and that would be morally unforgivable,” said Tierra Curry ...

WASHINGTON— The yearly count released today of monarch butterflies that overwintered in Mexico continues to show imperilment for the migratory butterfly. This year’s count of 2.84 hectares (7 acres) ...

Fewer-than-usual monarch ... butterfly habitat. She also encouraged people to volunteer with the Xerces Society to collect data about monarchs and spread the word about challenges the insects face.

The annual Western Monarch Count observed a peak population of 9,119 Monarch butterflies in California this winter, marking a sharp decline in the last few years. The count, administered by the ...