Presumed Extinct

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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.

The Checkerspot Comes Home

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Contrary to common notions of autumn as a season of dying back, our fall rains often herald new beginnings. That’s especially true this fall at Edgewood County Park and Natural Preserve in Redwood City. For the first time since 2002, … Read more

Coyote Valley: Another Drive-By Extinction?

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As we report in The Checkerspot Comes Home, Coyote Ridge southeast of San Jose is one of the last refuges for the endangered bay checkerspot butterfly. A good deal of that habitat is protected, but the checkerspots here should keep … Read more

From Collecting to Recollecting

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This San Mateo coast reserve–home to brilliantly colored nudibranchs, 20-armed sun stars, and pupping harbor seals–has been transformed from a place of collection and plunder to one of exploration and wonder.

Mount Diablo: A Place for Raptors

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Mount Diablo’s woodlands and canyons provide habitat for a fantastic variety of raptors, from kestrels to golden eagles (of which the northern Diablo Range hosts perhaps the world’s densest population). In the 1950s, however, the mountain lost one of its … Read more

Do local breeding birds mate for life?

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Q: Do any local breeding birds mate for life? Why? [Leo, San Francisco] A: Some local birds do form long-lasting pair bonds of several different kinds. Ravens and scrub jay pairs hang out together all year, not just at breeding … Read more

Black Rock Abalone Endangered

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A favorite food of the southern sea otter is black abalone, a marine mollusk that has historically put down roots in rocky intertidal zones from Southern Oregon to Baja. This once-abundant creature—one of seven abalone species found off California—is nearing … Read more