Western U.S. Monarch Butterfly Population Declined Sharply in 2018

https://e360.yale.edu/digest/western-u-s-monarch-butterfly-population-declined-sharply-in-2018

California’s population of monarch butterflies declined 86 percent in 2018 compared to the previous year, according to the Xerces Society for Invertebrate Conservation, a nonprofit group that conducts an annual survey of the species in the western United States. Overall, the state’s monarch population has declined 97 percent since the 1980s.

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Original Title: Western U.S. Monarch Butterfly Population Declined Sharply in 2018
Full Text of the Original Article: https://e360.yale.edu/digest/western-u-s-monarch-butterfly-population-declined-sharply-in-2018