One in five butterflies lost in the US since 2000, study finds

Mongabay
Mar 14, 2025, 1:41 am138 pts
A study in the United States found a dramatic 22% decline in butterfly populations between 2000 and 2020. Previous research has focused on a specific butterfly species or regions of the country. For this study, researchers wanted to understand overall butterfly population trends across the U.S. They gathered…

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