Latest from butterflies

Development Threatens San Bruno Mountain Butterflies

January 25, 2010 by Donna Whitmarsh

It's an old story. Another species that once flourished is being pushed to extinction by modern human encroachment. The callippe silverspot has been gradually pushed into a few remaining islands of habitat, including San Bruno Mountain south of San Francisco. Critics say a long-simmering development proposal threatens that habitat.

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Bees, Butterflies, and Other Insect Pollinators

March 26, 2009 by Sue Rosenthal

Insects have fascinating lives and behaviors most of us never notice. But if you spend even 15 minutes watching bees ...

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Chasing the West Coast Lady

July 18, 2008 by Laura Hautala

If butterfly watching sounds sedate, perhaps you've never witnessed the excitement of the territorial chase...

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Callippe Silverspot

June 20, 2008 by Laura Hautala

The endangered callippe silverspot butterfly was once common, but now it's found only on San Bruno Mountain, one of the world's hot spots of biodiversity and a spectacular bit of Bay Area wilderness.

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Monitoring the Monarchs

June 17, 2008 by Rick Bacigalupi

A multi-generational migration route includes Pacific Grove, CA, where monarch butterflies fill the air and form large clusters on tree ...

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Book Review: Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions

October 01, 2007 by Dan Rademacher

Field Guide to Butterflies of the San Francisco Bay and Sacramento Valley Regions, by Arthur M. Shapiro and Tim Manolis, ...

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Elfin Butterfly

October 01, 2007 by Aleta George

To us, the San Bruno elfin butterfly, with its one-inch wingspan, seems small, but to the ants that protected it ...

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Presumed Extinct

October 01, 2007 by Matthew Bettelheim

Mention extinct species, and most people think of long-gone mastodons and saber-toothed tigers. But we know that some Bay Area species have disappeared in just the last 200 years. Or have they? Prompted by rediscoveries of lost species in Solano and Contra Costa counties, we decided to see what other missing flora and fauna might still be out there, awaiting a patient observer.

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The Checkerspot Comes Home

October 01, 2007 by Carolyn J. Strange

Contrary to common notions of autumn as a season of dying back, our fall rains often herald new beginnings. That’s ...

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Coyote Valley: Another Drive-By Extinction?

October 01, 2007 by David Carroll

As we report in The Checkerspot Comes Home, Coyote Ridge southeast of San Jose is one of the last refuges ...

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