Eastern monarch butterfly populations increase in 2025, but challenges remain

Mongabay
Mar 24, 2026, 1:13 pm57 ptsTrending
Monarch butterfly populations in North America have been in dramatic decline for several decades. But in a glimmer of hope for the iconic orange-and-black species, the 2025 population estimate was roughly 64% higher compared to the previous year. Scientists split migratory monarchs (Danaus plexippus) into two…

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