Western Monarch Count Tallies 233,394 Butterflies

Population tally is lower than last year, similar to 2021

Volunteers and partners with the Xerces Society’s Western Monarch Count have been busy counting butterflies this winter, and the final numbers are now in. The 27th annual Thanksgiving count ran from November 11 through December 3, 2023, totaling 233,394 butterflies across 256 overwintering sites in the western United States. This tally is slightly lower than last year’s, yet similar to the 2021 count. The overwintering population of western monarchs remains at approximately 5% of its size in the 1980s. Read the full blog here.