Support the Xerces Society’s monarch conservation efforts.
Photo: Monarch butterfly on milkweed (Asclepias fascicularis) by Eric Eldredge, USDA NRCS GBPMC.
Get ready to celebrate the 20th year of the Western Monarch Thanksgiving Count!
Started in 1997 by Mia Monroe, David Marriott, and Dennis Frey, the WMTC enters its 20th year this season. The count will run from Saturday November 12 through Sunday December 4 and you can sign up to monitor on the Find an Overwintering Site Near You page. Also, be sure to check out the Events page to stay updated on trainings and monarch celebrations happening up and down the coast this season.
You can help protect monarchs! Become a Citizen Scientist, trained by monarch experts to count and record observations (4+ times in 10 weeks) at one or more overwintering sites throughout the East Bay...
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Monarch overwintering site location data provided by this website is for basic navigational purposes only and is not intended to be relied upon in situations where precise location information is needed or where erroneous, inaccurate or incomplete location data may lead to personal injury, death, or property or environmental damage. Neither we, nor any of our content providers, guarantee the availability, accuracy, reliability, or timeliness of location data displayed by our website.
Participants of this citizen science project assume all responsibility for following the rules and regulations of the areas in which they are surveying, including all notices of private property and no trespassing warnings. The Xerces Society encourages all participants to follow basic common sense and safety precautions when accessing and monitoring overwintering sites. Participants are ultimately responsible for their own safety and well-being.