Volunteer: Invasive Plant Removal

Thu · Oct 29·9 AM·Marsh Creek Regional Trail (Oakley): Cypress Staging Area

Guided naturalist walk at Marsh Creek Regional Trail Cypress Staging Area showcases local bird biodiversity for novice and seasoned birders, free drop‑in, adult participation required, all ages.

Thu · Oct 29·9 AM·Sapp Center for Science Teaching and Learning, 376 Lomita Dr, Stanford, CA 94305 · Palo Alto

Featured book display at the Science Library examines legendary monsters versus verified natural history, separating facts from folklore and hoaxes.

Thu · Oct 29·9 AM·Marsh Creek, Oakley

Guided birding walk at Marsh Creek’s paved, flat trail offers immersive avian biodiversity experience for novice and seasoned birders, free drop‑in for ages 18+.

Thu · Oct 29·8:30 AM – 10:30 AM

Hard‑pack gravel trail provides a 1‑to 1½‑mile hike with a gentle 300‑foot climb and spectacular views, open to hikers, mountain bikers and horses, requires free permit application.

Sat · Oct 24·10 AM – 3 PM·Mark West Creek Regional Park and Preserve

Explore Sonoma County's newest parklands at Mark West Creek Regional Park before public opening.

Wed · Oct 28·8:30 AM – 10:30 AM·Spring Lake Regional Park

Leisurely bird walks at Spring Lake Regional Park cater to all experience levels.

Wed · Oct 28·9:30 AM – 12:30 PM·Doran Regional Park

Ice plant removal volunteers restore native coastal habitat at Doran Regional Park.

Sat · Oct 31·2 PM – 4 PM·Spring Lake Regional Park

Kayak: Spooky Paddle! at Spring Lake Regional Park delivers a chilling Halloween afternoon on the water.