[Pollinator] Western Monarchs Head into Spring with a Small Migratory Population
Isis Howard
isis.howard at xerces.org
Fri Feb 27 12:17:59 PST 2026
Hello conservation partners,
We've just released the *late-season findings* from the Xerces Society's
annual *Western Monarch Count*. <https://westernmonarchcount.org/> You can
find our announcement at the following link, and please feel free to share:
https://xerces.org/news/organizational-news/western-monarchs-head-into-spring-with-small-migratory-population
.
We have also posted the update to our Xerces' social media channels.
Quick Summary:
- Volunteers and partners recorded 6,464 monarch butterflies across 193
overwintering sites.
- This tally is 47% lower than the mid-season count of 12,260
butterflies, compared with 35%-58% seen in the past ten years. (A drop
between the mid-season to late-season counts is typical due to seasonal
mortality and possibly early dispersal from overwintering sites.)
- Sites with the highest late season counts:
- Natural Bridges State Park in Santa Cruz with 1,540 monarchs
- Private site in Big Sur with 1,140 monarchs
- Lighthouse Field State Beach in Santa Cruz with 804 monarchs
- Skywest Golf Course in Hayward with 547 monarchs across two sites
- Moran Lake in Santa Cruz with 520 monarchs.
Thank you all for making the annual overwintering count possible--we
appreciate you!
Warmly,
Isis 🦋🐛
Isis Howard (she/her)
Conservation Biologist
The Xerces Society for Invertebrate Conservation
503.212.0546 | isis.howard at xerces.org
xerces.org
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