2020 - 2021 SEASON
<2,000

 Sparse clusters of monarchs in fall 2020 at Pismo State Beach, usually the largest overwintering site in California. (Photo: Sarah Sindel, California State Parks.)

Western Monarch Rebound to Final Tally of Nearly 250,000 Butterflies

Monarch Larva Monitoring Project

2022 Training

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The Monarch Larva Monitoring Project (MLMP) training sessions, organized by Monarch Joint Venture and the UW-Madison Arboretum, are one-day workshops designed to inform participants on how to collect data that contribute to our knowledge about the monarch population.

​Monarch Pollinator Garden signage soon available through Western Monarch Trail.  The lower left quarter can be edited for your area and sponsors.  Choose English or Spanish.

2021 Annual

Monarch Research Review

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A review summary of 85 research papers in PDF format about many aspects of our eastern and western monarchs.

Great 4 Minute Video

for Kids and Kids at Heart!

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Why is the Very Hungry Caterpillar so Dang Hungry?

Thanks to KQED Podcast with Pollinator Posse.

Is Your City or Town Interested in

Helping Our Pollinators Survive?

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Take the National Fish and Wildlife Federation's Mayor's Monarch Pledge!

Population Updates

Pros and Cons of Roadside Habitat

​Monarchs and Crops.Climate and Remote Sensing

2022 PRESS RELEASE

Xerces Announces Western Monarchs Rebound to Final Tally of Nearly 250,000 Butterflies!