POST has purchased more than 6,000 acres of oak woodlands near Gilroy, saving it from becoming a sand and gravel mine. It’s ...

The parrots of San Francisco have ancestors from two species that hail from two completely separate parts of South America. Amir Aziz / Bay Nature This San Francisco story begins somewhere along the ...

To celebrate our 25th anniversary, we compiled the definitive guide to Bay Area hiking, from beginner-friendly walks to multi-day backcountry routes. In partnership with AllTrails. Bay Nature’s events ...

The San Francisco Bay Area is one of the most biodiverse regions in North America, home to hundreds of bird species, rare mammals, and wildlife found nowhere else on earth. Bay Nature has been ...

At some point during my decades of watching and researching hawks in the Marin Headlands, I began to notice insects. At first it was butterflies: migrating monarchs, local pipe-vine swallowtails, ...

After the Buttes erupted, from about 1.4 million to 630,000 years ago, a vast freshwater lake filled the Central Valley. Cleo Vilett In the vast flatness of the Sacramento Valley, encircled by a ...

A series on moths and mothing from two Bay Area enthusiasts, Cat Chang and Allen Fish, from our Spring 2026 issue. Best seen on Mount Diablo in mid-spring, when there usually are enough of them flying ...

My most inspiring bike ride this past year was not on a mountain or in some exotic destination. It was sixteen flat and muddy valley miles under overcast skies.

ALLEN FISH: Birders use the term “spark bird” to talk about the species that got them started. Do you have a spark moth? And why are moths exciting for you? CAT CHANG: The omnivorous looper might have ...

To start moth-lighting, tack up a white sheet or cloth outside. It could be on a wall or fence, tree or clothesline. I’ve used three types of UV (black) lights: (1) a ruler-size LED light bar that ...