Western monarch butterfly populations decline by 30%.

Western monarch butterfly populations have dropped by 30% due to a wet winter in California. Researchers from the Xerces Society reported that volunteers counted more than 230,000 butterflies across California and Arizona, compared to 330,000 in the previous year. The decline is likely due to a wet winter that affected the butterflies' habitat and food sources. The western monarch butterfly population has experienced a significant decline since the 1980s, with numbers dropping by over 95%.

January 30, 2024
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