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.
If a trip is closed when you try to register, click “Contact Organizer and ask to be placed on the waiting list”
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!
Roy’s Redwoods Preserve
Wednesday, April 30, 2025
8:30 AM to 12:00 PM
Birding with Liz Lewis
Register HERE for this Field Trip
Registration required. Registration opens on April 20 at 8AM
As we saunter along the Roy’s Redwood loop trail and the newly restored floodplains and meadows, spring migrant arrivals we will be looking (and listening) for are Warbling Vireo, Wilson’s Warbler, Black-throated Gray Warbler, Western Wood Pewee, Western Flycatcher and Ash-throated Flycatcher.
Besides listening and looking for migrants, we will also seek out the resident species who nest in Roy’s Redwoods: including Hairy Woodpecker, Pacific Wren, Red-breasted Nuthatch, Hutton’s Vireo and several raptors. The trail is generally flat with a gentle rise. Please remember to dress in layers and to bring water and snacks. There is a portable bathroom available at the trailhead.
Directions: Meet at Roy’s Redwoods Preserve trailhead, on Nicasio Valley Road, about 0.5 north of Sir Francis Drake Blvd. or about 3.5 miles south of Lucas Valley Rd. Parking is available along Nicasio Valley Road near the trailhead.
The Ponds at Las Gallinas Sanitary District – San Rafael
Thursday, May 1, 2025
8:30 AM to 12:00 PM
Birding with Mark Clark
All participants are welcome to join this trip.
We welcome bird enthusiasts of all levels, especially beginning birders, to join leader Mark Clark on our monthly first Thursday walk around the ponds at Las Gallinas. On our search 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.
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 a portable restroom in the parking area for public use.
Mt. Burdell/Stafford Lake or Rush Creek – Birding in Marin Series
Birding in Marin, Season 10, trip 5
Saturday, May 3, 2025
8:30 AM to mid afternoon
Birding with Jim White and Bob Battagin
Register HERE for this Field Trip
Registration required. Registration opens April 23 at 8:00 AM
Join Jim and Bob for a field trip to the gentle slopes of Mount Burdell where we’ll listen to and observe the impressive variety of songbirds that make this area their springtime home. Species we might see include Lark Sparrow, Ash-throated Flycatcher, Bullock’s Oriole, Lazuli Bunting and Grasshopper Sparrow, among many other possibilities. In the afternoon, we plan to continue birding at Stafford Lake or Rush Creek.
This will be a moderate hike with many opportunities to look at birds and spring wildflowers. Wear comfortable walking shoes and layered clothing. Bring water and snacks. We will meet at the end of San Andreas Drive in Novato.
DIRECTIONS: Take Hwy 101 to Novato, exit at the San Marin Dr/Atherton Ave exit. At the end of the exit ramp, turn left (west) on San Marin Dr. Go approximately two miles and turn right on San Andreas Dr. Drive nearly to the end of the road and park on the street. No restrooms available.
Birding the Napa River by Boat – CANCELLED
Monday, May 5, 2025
8:30 AM – 12:30 PM
Trip Leader: Jude Stalker
Trip Cost: $120 per person
Register HERE for this Field Trip
Registration required. Registration opens April 10 at 8 AM
This trip begins at the historic Vallejo and Mare Island waterfronts and continues into a different world, one of vineyards, backwater homes, and some of the largest contiguous marshes in the Bay Area. Even before leaving the dock, you’ll spot diving ducks and grebes feeding. At Mare Island, you’ll pass Ospreys and egrets roosting in nearby trees. As the boat passes under Highway 37, you might even catch a pair of Peregrine Falcons during this springtime cruise alongside the Napa/Sonoma marshes. A variety of raptor species are common and occasionally both golden and bald eagles are seen.
The trip costs $120. A waitlist will open if the trip sells out. Join the waitlist by clicking the Contact Organizer prompt. If you cancel your registration more than one week before the start of the trip AND we can fill your spot with someone else on the waitlist, you will be reimbursed unless you would like to convert your registration fee into a tax-deductible donation to MAS.
Ticket holders will receive instructions and directions to the Vallejo Marina, approximately one week prior to the trip.
Field Trips Webinar Recordings Archive
2021
March
– Rare Birds of Marin 2020 – by Joseph Zeno, John King, Lucas Corneliuseen and Mark Schulist
February
– GIS Conservation – The Breeding Birds of Marin County – by William Wiskes – CLICK HERE
January
– Marin’s Breeding Birds (How We Know What We Know) by Dave DeSante – CLICK HERE
– New Breading Bird Atlas – by Juan Garcia – CLICK HERE
2020
September
– Snowy Plovers: A Natural History, Breeding Biology & Conservation – CLICK HERE
– Pacific Flyway Shorebird Surveys – CLICK HERE
October
– 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
November
– Improving Habitat for Central Valley Waterbirds – CLICK HERE