Field Trips

Marin Audubon Society is providing a full schedule of free field trips for the 2024 season.

Advance registration is required for most of our trips, nearly all which have size limits to prevent overcrowding. Registration on the MAS website’s Field Trips page will open ten days before the trip date. 

Trips can fill up quickly. Please register early to make sure you get a spot. If you won’t be able to attend a trip that you have registered for, please cancel using the “contact organizer” button on Ticketbud so that the spot may be opened up for someone else.

Attention: Recently Ticketbud has not opened for trip signups precisely at 8:00AM. This has led to confusion among would be participants who assumed the message “There are no tickets available at this time” means the trip is already sold out, but it doesn’t, so please try to sign up again a minute or two later. Ticketbud is working on the problem.

Our field trips are free to our members and the public, but we greatly appreciate your donations to support our programs and conservation projects! A donation of $35 or more qualifies you for an annual membership at Marin Audubon Society! **New Members Only

Become a Chapter Supporting Member of the Marin Audubon Society starting at $35 a year, or RENEW your membership today! Your membership helps to fund important efforts such as our ongoing habitat restoration projects, the Monarch Rescue Project, our Northern Spotted Owl Outreach program, and of course our monthly field trips and speaker series! We cannot do these important projects, along with our many other efforts, without the support of our dedicated members!

Tomales Bay State Park

Wednesday, February 28, 2024
10:00 AM to 1:00 PM
Birding with Rich Cimino
Register HERE for this field trip

Registration required. Registration opens February 18th at 8 AM.

As we bird the trails of the State Park on this field trip, we will also discuss the Forest Health & Fire Resilience management plan for the California State Parks.

Mt. Tam and Corte Madera Marshes

Birding in Marin - Season 9, Trip 3
Saturday, March 2, 2024
8:30 AM to mid-afternoon
Birding with Jim White and Bob Battagin
Register HERE for this field trip

Registration opens Wednesday, February 21st at 8 AM.

Mount Tamalpais, rising like an icon above Marin, hosts some birds uncommonly seen in the rest of the county such as Pileated WoodpeckerRed-breasted NuthatchPurple FinchRed Crossbill, and in the winter, 1 or 2 Townsend’s Solitaire.

The Ponds at Las Gallinas Valley Sanitary District

Thursday, March 7, 2024 8:30 AM to 12:00 PM Birding with Sande and Bob Chilvers No registration required.  All participants are welcome to join this trip. Join old friends and meet new ones on our regularly scheduled walks on the first Thursday of the month at Las Gallinas. We welcome bird enthusiasts of all levels, especially beginning birders, on this leisurely walk around the ponds. Special thanks to Bob and Sande Chilvers for volunteering once again to lead our monthly walks in search of waterfowl, waders, songbirds, raptors, and shorebirds. Among other birds, we will see various species of rails, swallows and teals. With overwintering birds present, we are likely to spot some interesting species, so come assist in our search. We all help each other to find and identify the birds, and there are usually several experienced birders to assist. You don’t even have to arrive on time because we spend the first 30-60 minutes studying the birds around the first pond, and our group is easy to find. DIRECTIONS: From Hwy 101, exit at Smith Ranch Rd. Drive east on Smith Ranch Rd. toward McInnis Park. Turn left immediately 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 an outhouse in the parking area for public use or you can use the bathrooms at nearby McInnis Park.

Field Trips Webinar Recordings Archive


Rare Birds of Marin 2020 – by Joseph Zeno, John King, Lucas Corneliuseen and Mark Schulist

– GIS Conservation – The Breeding Birds of Marin County – by William Wiskes – CLICK HERE

– Marin’s Breeding Birds (How We Know What We Know) by Dave DeSante – CLICK HERE
New Breading Bird Atlas – by Juan Garcia – CLICK HERE


– Snowy Plovers: A Natural History, Breeding Biology & Conservation – CLICK HERE
– Pacific Flyway Shorebird Surveys – CLICK HERE

– Diurnal Raptors of Marin – CLICK HERE
– The Natural History of Osprey in Marin County – CLICK HERE
– Red-Tales: Hawkish Behaviors and Migratory Stories – CLICK HERE

– Improving Habitat for Central Valley Waterbirds – CLICK HERE