Cooperative Extension San Joaquin County
University of California
Cooperative Extension San Joaquin County

Posts Tagged: overwintering monarchs

David James' Incredible Research on Migratory Monarchs

This male monarch, released by citizen scientist Steve Johnson of Ashland on Aug. 28, 2016, fluttered into Vacaville, Calif., on Sept. 5, a 457-kilometer  journey. (Photo by Kathy Keatley Garvey)

Newly published research by entomologist David James of Washington State University, Pullman, Wash., in the Journal of the Lepidopterists' Society yielded incredible news about the monarch population that migrates from the Pacific Northwest to...

It Is Not a Good Time to Be a Butterfly

A female monarch that eclosed on Jan. 5 perches on a finger, next to a garden flag depicting a male monarch and a worker honey bee. (Photo by Kathy Keatley Garvey)

It is not a good time to be a butterfly. Especially if you're a monarch butterfly that eclosed on Jan. 5 in cold and rainy Vacaville, Calif. while all--or most--of your counterparts are overwintering along coastal California or in central Mexico. You...

Posted on Monday, January 9, 2017 at 5:54 PM

Our Story Begins with Eight Monarch Caterpillars in the Dead of Winter

Rita LeRoy of Vallejo holds a Vacaville monarch before releasing it at Lighthouse Field State Park. (Photo by Walter Rockholt)

This is a story about how eight monarch butterflies escaped the freezing temperatures of Vacaville, Calif., and hitchhiked to sunny Santa Cruz, thanks to Good Samaritans (Good Monarcharians?) Rita LeRoy and Walter Rockholt of Vallejo. It all started in...

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