Butterfly Count 2011 - 2023Each year, Yosemite coordinates its Yosemite Butterfly Count event with the North American Butterfly Association, an organization that conducts long-term monitoring of butterfly populations all over North America.This event takes place in summer in the Tuolumne Meadows area. Since its inception in 2011, the Yosemite Butterfly Count has recorded a remarkable diversity of 100 butterfly species.
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Last updated: September 5, 2023