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!

Big Rock and Las Gallinas – Birding in Marin Series

Saturday, June 1, 2024
8:30 AM to mid-afternoon
Birding with Jim White and Bob Battagin
Register HERE for this Field Trip

Registration required for this trip. Registration opens on May 22 at 8:00 AM.

Trails at Big Rock, rather steep, allow us to view some of the expansive grasslands and forested ravines in Marin. Some of the grassland nesting birds we will be looking for include Lazuli BuntingGrasshopper SparrowHorned Lark, and Ash-throated Flycatcher. We will also have a vast amount of sky visible so swallows, swifts, and raptors may appear with a chance for a Golden Eagle.

At midday we expect to drive Lucas Valley Road to Las Gallinas where we will be looking for American and Least BitternsGreen HeronCinnamon TealCommon Gallinule, and Great-tailed Grackle.

Outer Point Reyes

Wednesday, June 12, 2024
8:30 am – 2:00 pm
Birding with Liz Lewis and Susan Kelly
Register HERE for this Field Trip

Registration required. Registration opens June 2 at 8 AM

Would you like to contribute to the second Marin County Breeding Bird Atlas? Join MCBBA2’s Liz Lewis and Susan Kelly for a morning of blockbusting birding in Outer Point Reyes including the cypress tree tunnel to the historic RCA radio station. Time permitting, we will explore the abandoned ranch as well. Block 3-4 is a high priority block with minimal data collected to date. Species we might see or hear include: Allen’s Hummingbird, Swainson’s Thrush, Northern Harrier, and Western Meadowlark. 

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