These chinooks are likely hatchery strays. But they are still an ecosystem boon—and flaming-bright symbols of restoration at work.

The first update to a local State of the Birds report in 14 years shows restoration working—and some puzzling declines.

The 2025 State of Our Estuary assessment, released this fall at a regional conference, takes the pulse of the San Francisco Estuary in 17 indicators. It’s a health checkup for over 38 million acres of ...

The first attempts to restore Mendocino’s streams for coho and other salmon began in the 1960s. Decades of logging in the ...

Editor’s note On a Saturday evening in late October, my boyfriend and I were walking around César Chávez Park in Berkeley ...

One year after the discovery that golden mussels had invaded the Delta, thick colonies coat boats and piers and threaten ...

On a waterlogged highway, cars drive into the sea. Truck cabs and bus windows poke up above the waves; sedans are fully submerged, burbling through the water like schooling fish. This is not a scene ...

A money spider (Tenuiphantes sp.) balloons, under controlled conditions, from its daisy perch. You can see the trichobothria (leg hairs) and dragline silk in this picture. (Michael Hutchinson via ...

A less-frequently spotted Vespula in our area: the forest yellowjacket (Vespula acadica). (Tony Iwane via iNaturalist, CC-BY-NC) Ask almost anyone about yellowjackets; they will have a harrowing tale ...

Audrey Fusco can’t help getting excited at the sight of one monarch butterfly these days. In the spring sun in Bolinas, one poses briefly on the spire of a tall purple flower, wings aglow in the ...

It’s a cool February morning in the San Francisco Bay Area’s Coastal Range. The air smells fresh and mulchy thanks to the recent rain. As you meander down the trail, a persistent tapping sound drifts ...

Bay Nature has just opened nominations for our 2025 Local Hero Awards! Next spring’s event will mark our 15th annual Local Hero Awards and Bay Nature’s 25th anniversary as an organization. We look ...