University of Minnesota

Newsletter and Updates

The Third Trinational Monarch Monitoring Blitz Was a Success Thanks to You

The Commission for Environmental Cooperation (CEC) is pleased to announce the results of the third annual Trinational Monarch Monitoring Blitz (the Blitz). For a week, hundreds of volunteers in Canada, Mexico and the United States helped monarch experts gain more information to enable better understanding of the distribution of the migratory monarch butterfly, an emblematic North American species. Between July 27 and August 4, 1,436 volunteers from the three countries participated in the Blitz, recording 32,883 monarchs at various stages of their life cycle, from eggs to full-fledged butterflies, and monitoring 59,176 milkweed plants—the sole food source for monarch caterpillars. Read More »

Join the 2019 International Monarch Monitoring Blitz!

The 3rd Annual International Monarch Monitoring Blitz is coming up in Canada, Mexico and the United States from 27 July to 4 August 2019. For one week, the Blitz invites people across North America to go out to gardens, parks and green areas and monitor milkweed plants for monarch eggs, caterpillars, chrysalises and butterflies. This information will help researchers identify priority areas for monarch conservation actions. Read More »

Thank you to everyone who contributed to the 2018 Monarch Monitoring Blitz!

Montreal, 27 September 2018—The Trinational Monarch Conservation Partnership is pleased to announce the results of the second annual Trinational Monarch Monitoring Blitz (the Blitz), and thanks the hundreds of citizen scientists across North America who gathered critical data over a week-long period to support monarch butterfly conservation. Read on for a summary of results! Read More »

MLMP contributes to the 2018 International Monarch Monitoring Blitz!

From July 28 to August 5, 2018, volunteers from Canada, Mexico and the United States are invited to participate in the second International Monarch Monitoring Blitz (the Blitz) to help identify the monarch butterfly's breeding sites. The Monarch Larva Monitoring Project (MLMP) is proud to be collecting data for the Blitz in the United States. Submit your observations! Read More »

Eastern Monarch Population Status Update

Earlier this month, World Wildlife Fund Mexico released the numbers for the eastern monarch overwintering population in an announcement which can be found here.  The following text is translated from the original news announcement:  The monitoring report of the forest area occupied by Monarch butterflies in 2017-2018, carried out by WWF and Conanp, registered 9 colonies of butterflies that occupied 2.48 hectares of forests, an area that represents a decrease of 14.77 percent with respect to the previous season (2.91 ha).  Read More »

Citizen Science Brings Monarch Butterfly Parasitoids to Light

Thanks to volunteers like you, we now know more than ever about the flies that attack monarch butterfly caterpillars. Over the last 18 years, Monarch Larva Monitoring Project volunteers have collected and raised more than 20,000 monarch eggs and caterpillars, and monitored them for incidents of parasitism by tachinid flies. A recent paper published in the Annals of the Entomological Society of America uses data collected by citizen scientists to delve into monarch-parasitoid associations and help discern between natural and human-driven impacts on monarchs and their population size. Read More »

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