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Many insect pollinators are declining in California, including bees and butterflies. The population of western monarch butterflies has declined 99.9% since the 1980s, due to a variety of reasons, including habitat loss and degradation, pesticides, and climate change. One important …

California Monarch and Pollinator Habitat Kits Read More »

By Stephanie McKnight on 1 March 2021 Many people have been seeing and reporting fairly large numbers of monarchs, both adults and caterpillars, all winter long in gardens on the California Coast this year. Since there haven’t been any formal …

Resident Monarch Populations on the Rise in California: What Does this Mean for the Western Migratory Population? Read More »

By Stephanie McKnight on 1 March 2021 Western Migratory Monarch Population Needs Extraordinary Level of Conservation to Persist. Since 1997 volunteers have conducted counts of overwintering monarchs for the Xerces Society’s annual Western Monarch Thanksgiving Count. As a way to …

Fifth Annual Western Monarch New Year’s Count Confirms Continued Decline in Western Monarch Population Read More »

Join us and thousands of volunteers across North America from July 24 – August 2, 2020 for the 4th annual International Monarch Monitoring Blitz (the Blitz). To participate, simply go out and look for and report milkweed plants and all …

2020 International Monarch Monitoring Blitz: July 24 – Aug 2, 2020 Read More »

Monarchs still urgently need Endangered Species Act protection in the United States and extraordinary conservation efforts throughout North America. The World Wildlife Fund-Mexico and the Comisión Nacional de Áreas Naturales Protegidas (CONANP) announced today that monarchs in central Mexico occupied …

Monarchs Overwintering in Mexico Down 53% Read More »

Monitoring revealed an average decrease of 46% between the Thanksgiving and New Year’s counts. This winter, many waited with bated breath for the results of the Western Monarch Thanksgiving Count (WMTC), which occurs annually around the Thanksgiving holiday. In January, …

New Year’s Count Finds Continued Decline of Monarchs Overwintering in California Read More »

The Western Monarch Mystery Challenge is a campaign running from February 14th to April 22nd, to collect more records of where western monarchs spend the spring in California, after leaving the overwintering sites. We know monarchs spend the winter months …

The Western Monarch Mystery Challenge February 14 – April 22 Read More »

Action is urgently needed to address the challenges facing monarch butterfly overwintering sites. With the number of western monarchs overwintering in California at less than 1% of historic levels for the second year in a row, it is obvious that …

The Vanishing Butterfly Groves of California Read More »

The annual Western Monarch Thanksgiving Count (WMTC) kicks off this coming weekend on Saturday, November 16 and will continue through Sunday, December 8. Thank you for being a part of this incredibly important community science program. This remarkable volunteer effort …

Western Monarch Thanksgiving Count Nov. 16 – Dec. 8 Read More »

Saturday, November 30, 2019 10:00 AM – 3:00 PM Pacific Grove Museum of Natural History “Celebrate the return of Pacific Grove’s monarch butterfly population during Magnificent Monarchs on Saturday, November 30th, from 10 a.m to 3 p.m. at the Museum. …

Science Saturday – Magnificent Monarchs – Pacific Grove Museum of Natural History Read More »