Events
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The San Francisco Bay State of the Birds
Learn how the SF Bay State of the Birds tracks bird trends as a sign of habitat health. Because birds tend to be sensitive to habitat changes and respond quickly, they are great indicators of overall habitat health. The SF Bay State of the Birds website reveals timely insights that guide restoration and management across San Francisco Bay. Built for land managers, funders, scientists, and community leaders, it delivers frequent updates to advance conservation goals.
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Deer Island Open Space and Simmons Slough – Novato
Join us on our walk along Deer Island Open Space trails with iNaturalist Ambassador Sarah Reid, who has experience with California Academy of Sciences, Sonoma Land Trust and Regional Parks. Her goal is to support new and existing users of the iNaturalist platform in learning how to record, identify and explore biodiversity in their local regions. READ MORE
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Rodeo Lagoon – Marin Headlands
Join William and David for this fourth fall migration field trip at Rodeo Lagoon. This is their long-time “patch,” which never seems to disappoint birders with daily variations in species and a good chance of an unusual sighting. On this trip, our group will be targeting Parasitic Jaeger, migrating shorebirds and scarcer migrant passerines. We will begin the morning with a Sea Watch from Rodeo Beach at 7:30 AM. Those arriving later may join us at 8:00 AM for a circuit of the lagoon. This field trip is less suitable for beginners. READ MORE
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The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael
Thursday, November 5, 2026 8:30 AM to noon Birding with Mark Clark Registration is not required. All participants are welcome to join this trip. On this trip we especially welcome beginning birders to join Mark Clark, along with bird enthusiasts of all levels, on our monthly walk around the ponds at Las Gallinas. With fall migration underway, we’ll be looking for waterfowl, waders, songbirds, raptors, rails and swallows. We are likely to spot some interesting species, so come assist in our search. The packed dirt paths around the ponds are wide, flat and easy to navigate. Heavy rain cancels. There is a portable restroom in the parking area for public use. DIRECTIONS: From Hwy 101, exit at Smith Ranch Rd. Drive east on Smith Ranch Rd. toward McInnis Park. Turn left after crossing the railroad tracks and drive about 0.5 mile through the LGVSD gates and into the parking lot at the end of the road. Meet the group by the bridge just past the parking lot. There is a portable restroom in the parking area for public use.
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Acorn Woodpeckers: Cooperation, Conflict, and Family Drama
Acorn Woodpeckers, best known for their unique habit of storing acorns by the thousands in special structures known as “granaries”, are cooperative breeders that exhibit one of the most complex social systems of any bird. Based
on a long-term study of this species at Hastings Natural History Reservation in Monterey County,
Walt will explain some of the strikingly cooperative and diabolically competitive behaviors of this species that he and his
colleagues have discovered during their 50+ year field study.