Monarch butterfly population in Western U.S. nears record 30-year low. Here's what to know.
The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...
Monarch butterfly count yields worrisome finding
This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...
Los Angeles Times11d
California’s monarch butterfly population plummets; fire wipes out Topanga habitat
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.