Field Trips
Marin Audubon Society is providing a full schedule of free field trips for the 2025 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!
The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael
Thursday, June 5, 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.
Big Rock and Las Gallinas Ponds
Birding in Marin, Season 10, Trip 6
Saturday, June 7, 2025
8:30 AM to mid-afternoon
Birding with Jim White and Bob Battagin
Registration required for this trip. Registration opens on May 27 at 8:00 AM
REGISTER HERE
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 Bunting, Grasshopper Sparrow, Horned 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’ll stop to eat our lunch before looking for American and Least Bitterns, Green Heron, Cinnamon Teal, Common Gallinule, and Great-tailed Grackle.
Marin Art and Garden Center – Ross
Saturday, June 14, 2025 8:15 AM to 10:30 AM Birding with Rich Cimino All participants are welcome to join this trip. Our trip to Marin Art and Garden Center offers an opportunity to experience its 11 acres of spectacular gardens, which support several different habitats, including two water features. We’ll listen for Black-headed Grosbeak, Hairy Woodpecker, Band-tailed Pigeon, both White-breasted and Pygmy Nuthatches, possible Orange Crown, Wilson and Black-throated Gray Warblers. Who knows, we may stumble on an exciting species visiting, like singing Purple Finch or Western Tanager. Trails are flat and easy to navigate. The location has bathrooms and parking. Meet at 8:15 AM in the Main Art and Garden Center parking lot located at 30 Sir Francis Drake Blvd. in Ross.
Nicasio and Giacomini Wetlands
Birding in Marin, Season 10 Trip 7 Saturday, July 5, 2025 8:30 AM to mid-afternoon Birding with Jim White and Bob Battagin REGISTER HERE Registration is required. Registration opens Wednesday, June 25 at 8 AM. The rolling hills of central Marin are covered with pastures, forested ridges, ranches, and reservoirs. As we bird in and around Nicasio and its Oak tree-lined creek, we will have a chance to see a Golden Eagle as a pair has nested in the area in recent years. We also hope to find some flycatchers, woodpeckers and perhaps a Brown Creeper. After a break for lunch in Point Reyes Station we plan to look over the Giacomini wetlands, which has become part of Pt Reyes National Park and sits on the southern reach of Tomales Bay. Most of the wintering ducks will be gone but Cinnamon and Blue-winged Teal have nested there and the tidal wetlands fed by Olema Creek harbor an abundance of life so we should find some birds. Swallows, egrets and herons, including an American Bittern, are possible. DIRECTIONS: From highway 101 in northern San Rafael take Lucas Valley Road west, around 10 miles, then right turn onto Nicasio Valley road for 0.5 miles to park near the ball field at Nicasio Square.
Limantour Beach
Birding in Marin, Season 10 – Trip 8 Saturday, August 2, 2025 8:30 AM to mid-afternoon Birding with Jim White and Bob Battagin REGISTER HERE Registration required for this trip. Registration opens on July 23 at 8 AM. We will visit the great beach of Limantour with its miles of sand, its tidal estuary, the open expanse of Drakes Bay and the Pacific Ocean beyond. We will gather in the ample parking lot with restrooms nearby. We’ll pack our lunches, shoulder our scopes and head out and up the beach. We can hike far enough to find Snowy Plovers to get our exercise and to cross over to the estuary side for our walk back. Gulls, terns, cormorants, loons, grebes, pelicans, murres, and guillemots will garner our attention. Shorebirds too, some already back from their breeding excursion to the Arctic, may gather along the estuary shores and shallows. Some ducks, hawks, and herons will show up too. DIRECTIONS: From CA 1 South, right (left from CA 1 North) onto Sir Francis Drake Blvd for 0.7 miles, left onto Bear Valley Road for 0.5, then right onto Limantour Road for 7. 5 miles to Limantour beach parking lot.
Abbotts Lagoon – Point Reyes National Seashore
Saturday, August 23, 2025 9:00 AM to 2:00 PM Birding with Rusty Scalf All participants are welcome to join this trip. We will bird the coastal scrub, lagoons, and ocean. We hope to find migrant shorebirds and resident Snowy Plovers. Abbotts Lagoon has historically been good for Baird’s Sandpiper and we may get lucky. Meet at 9 am at the Abbotts Lagoon parking lot (bathrooms but no water). Bring scope, liquids, lunch. Plan on walking 4 miles round-trip; relatively flat but trail consists partially of sand. Prepare for wind. DIRECTIONS: From Point Reyes Station on Hwy 1 go just south of town, right turn onto Sir Francis Drake Blvd, follow that thru Inverness, up over Inverness ridge into the Point Reyes National Seashore, then go north on Pierce Point Road. The Abbotts Lagoon parking lot is on the left in about 3 miles. Carpool if you can.

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