Every year in late summer and early fall, western monarchs journey back to more than 200 overwintering sites up and down the California coast. Here, they gather by the dozens, hundreds, and even thousands to rest for the winter, before mating in the spring and starting the cycle all over again. Citizen scientists monitor these overwintering groves each year, gathering information on habitat conditions and estimating population numbers. The highlight of this effort is the annual Western Monarch Thanksgiving Count (WMTC), which takes place for three weeks around the Thanksgiving holiday. To learn more about the count and find out how you can get involved, read more here. If you're visiting an overwintering site, don't forget to keep an eye out for tags this season too!
Mark your calendars. This year Pismo Beach is opening the 2016-17 Pismo Monarch grove on November 5 from 10am- 4pm with an event called “A Brush With the Butterflies” including art, music, food, and a raffle. Event is free and open to the public. ... See MoreSee Less
The monarch migration is upon us, and there is no better time to act to help protect this iconic species. As we anticipate leaves changing color and brisk autumn temperatures, monarchs too are recogni...
Do you know that you can help track monarchs in the West during the spring, summer, and fall, not just when monarchs are overwintering? The Xerces Society is gathering records of milkweed and monarch observations from citizen scientists like you! There are many ways to submit data---through the Monarch SOS app, online survey, etc. Check out www.xerces.org/milkweedsurvey to get started. ... See MoreSee Less
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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.