Science ❯ Biology ❯ Ecology ❯ Biodiversity

Butterflies

All 136 Midwestern Butterfly Species Declined Over 32 Years, PNAS Study Finds

Volunteer surveys from 1992 to 2023 reveal a 40% abundance decline with results guiding new habitat restoration efforts.

Butterfly Populations in the U.S. Decline by 22% Over Two Decades

US Butterfly Populations Decline by 22% Since 2000, Study Finds