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

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

Pismo State Beach this year – The Xerces Society for Invertebrate Conservation, an international nonprofit dedicated to ...

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

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

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

Santa Cruz County had the most overwintering monarch clusters this year, with Lighthouse Field State Park reporting 1,406 butterflies, Natural Bridges State Park counting 1,400 ... Experts say the ...

The Western population of the monarch ... by 2080. Habitat destruction, pesticides and extreme weather fluctuation due to climate change are all to blame for the butterfly’s decline.

The Xerces Society, a conservation group dedicated to invertebrate protection, announced disheartening news for insect ...

The Western population of the monarch ... by 2080. Habitat destruction, pesticides and extreme weather fluctuation due to climate change are all to blame for the butterfly's decline.

The Western population of the monarch ... to 4 million butterflies were estimated to spend winter in California, according to the California Department of Fish and Wildlife. Without urgent ...