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

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

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

The count estimated a winter population of 9,119 monarchs this year as climate change, habitat loss, pesticides and disease ...

“Insect populations commonly fluctuate from year to year,” according to the California ... The monarch butterfly was first petitioned to be listed under the federal Endangered Species Act ...

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as ...

Read more:Monarch butterflies proposed for threatened species status The ... 4 million butterflies were estimated to spend winter in California, according to the California Department of Fish ...

On Thursday, invertebrate conservation group the Xerxes Society released the results of their 28th annual Western Monarch ...

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 ...

A monarch butterfly at the Coastal Access Monarch Butterfly Preserve in Los Osos, Calif., on Jan. 20. (Gary Coronado / Los Angeles Times) ...

Read more: Monarch butterflies proposed for threatened species status The butterfly's Western population has plummeted more than 95% since the 1980s, when up to 4 million butterflies were estimated to ...