Field Trips
Events
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The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael
Thursday, February 5, 2026 8:30 AM to noon Birding with Mark Clark Registration is not required. 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 walk around the ponds at Las Gallinas. On our search we’ll be looking for waterfowl, waders, songbirds and raptors. 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 restroon in the parking area for public use.
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Winter Birds of the Delta – Boat Trip
Sunday, February 8, 2026 8:40 AM to 4:00 PM Birding with David Wimpfheimer Register HERE for the Boat Trip Registration for this trip opens January 6 at 8 AM. The trip costs $130. Limit of 25 participants for this trip. This popular cruise is a winter highlight for birders and provides a specialized look at the richness and history of the California Delta. After meeting at 8:40 for sign in and instructions, we’ll depart from the Antioch Marina at 9 AM As we head east, we enter sloughs and waterways with views out over the flooded agricultural fields that provide a refuge for flocks of geese, ducks, swans and shorebirds that nest in the north but winter here. Well known birder and naturalist David Wimpfheimer will provide commentary and captain Ronn Patterson will fill in bits about the history of the delta. Coffee, tea, hot chocolate is provided, bring lunch and snacks. As bad weather can cancel as with any winter trip, there is an inclement weather date set for February 22. Light rain will not cancel. Waitlist: A waitlist will open if the trip sells out. Add your name to the list by clicking Contact Organizer prompt. Cancellation: If you cancel your registration before February 1 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. Directions: Approximately one week prior to the trip, ticketholders will receive instructions and directions to the Antioch Marina, where the trip begins and ends.
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Hamilton Wetlands – Novato
Friday, February 20, 2026 8:30 AM to noon Birding with David Sexton and Matt Keller No registration required. All participants are welcome to join this trip. Birders of all experience levels are welcome to join us for an exciting morning at Hamilton Wetlands with Point Blue Conservation Science! Spotting scopes and binoculars will be available. We recommend bringing your own pair of binoculars, water, sun protection, layers of clothing, and comfortable walking shoes. We will be on a wide, flat compacted dirt/gravel levee. A fully accessible bathroom will be available at the start and end of the event. Directions: meet at Point Blue’s Novato Baylands native plant nursery at 737 Aberdeen Road, Novato, CA. From Hwy 101, take exit 458 to merge onto Nave Dr toward Hamilton Field. Turn right onto Hamilton Pkwy. Turn left through an open gate onto Aberdeen Rd, then keep to the right at the fork to proceed to the nursery.
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Rodeo Lagoon – Marin Headlands
With early spring migration underway will be looking out for migrant wildfowl, grebes, loons, gulls, and passerines. As usual, the weather will dictate our focus with onshore northwest winds ideal for spring sea watches, while offshore easterly winds promise a good selection of late winter and early summer passerine migrants. Join us for a Sea Watch at 7:30 AM or arrive later at 8:00 AM for a circuit of the lagoon. A brief mid-morning ‘coffee-stop’ is planned at Headlands Center for the Arts and it would be appreciated if participants come willing to contribute via the onsite ‘tip-jar’ as a thank you to the Headlands Center for the Arts for accommodating our group. This field trip is less suitable for beginners.
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The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael
Thursday, March 5, 2026 8:30 AM to noon Birding with Mark Clark Registration is not required. 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 walk around the ponds at Las Gallinas. On our search we’ll be looking for waterfowl, waders, songbirds, raptors 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 restroon in the parking area for public use.
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Rodeo Lagoon – Marin Headlands
With early spring migration underway will be looking out for migrant wildfowl, grebes, loons, gulls, and passerines. As usual, the weather will dictate our focus with onshore northwest winds ideal for spring sea watches, while offshore easterly winds promise a good selection of late winter and early summer passerine migrants. Join us for a Sea Watch at 7:30 AM or arrive later at 8:00 AM for a circuit of the lagoon. A brief mid-morning ‘coffee-stop’ is planned at Headlands Center for the Arts and it would be appreciated if participants come willing to contribute via the onsite ‘tip-jar’ as a thank you to the Headlands Center for the Arts for accommodating our group. This field trip is less suitable for beginners.
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The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael
Thursday, April 2, 2026 8:30 AM to noon Birding with Mark Clark Registration is not required. 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 walk around the ponds at Las Gallinas. On our search we’ll be looking for waterfowl, waders, songbirds, raptors 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 restroon in the parking area for public use.
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Birds, Plants and Wildflowers of Mt. Burdell
Thursday, April 2, 2026 8:30 am – 1:30 pm Birding with David Edelson and Michelle Muir REGISTER HERE Registration is required. Registration opens Sunday, March 23 on 8 AM. Limit of 15 participants for this trip On this moderate 4-mile hike, we will look and listen for birds, and also stop to appreciate native plants and habitat, particularly wildflowers which should be in abundant bloom. Mount Burdell, a Marin County Open Space Preserve located just west of Novato, is a hotspot of plant and avian diversity, with diverse oak woodlands, grasslands, serpentine outcrops and a vernal pool (Hidden Lake). Some of the birds we’ll hope to see include spring migrants like orange-crowned warblers, house wrens, lark sparrows, and Bullock’s orioles, as well as year-round residents like oak titmice, Bewick’s wrens, western bluebirds, and multiple species of woodpeckers. This trip is suitable for all levels of birders and plant enthusiasts. We’ll meet at the San Andreas trailhead. To get there, exit Highway 101 at San Marin Drive, go west approximately 2.5 miles, turn right (north) on San Andreas Drive and go roughly .6 mile to the trailhead. There is parking along the road but no bathrooms or water. We are planning a 4-mile hike which includes some uphill and/or rocky sections where hiking poles might be useful. We recommend hiking shoes or trail shoes with good traction. Please bring lunch/snacks, ample water, sunscreen, a hat, and of course binoculars.
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Dominican University – San Rafael
Wednesday April 15, 2026 8:30 AM to 11:30 AM Birding with Rich Cimino and Janet Bodle REGISTER HERE Registration is required. Registration opens on April 5 at 8 AM. Limit of 12 participants for this trip. Spring migration birding on the Dominican University grounds will take us to riparian, sycamore and oak habitat. Species we hope to see might be, Western Tanager, Black-headed Grosbeak, Cassin Viero as well resident birds. Address for Dominican University is 50 Acacia Ave in San Rafael – meet at the free visitors parking lot at the intersection of Grand and Acacia avenues (the Conlan Center lot).
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Rodeo Lagoon – Marin Headlands
With early spring migration underway will be looking out for migrant wildfowl, grebes, loons, gulls, and passerines. As usual, the weather will dictate our focus with onshore northwest winds ideal for spring sea watches, while offshore easterly winds promise a good selection of late winter and early summer passerine migrants. Join us for a Sea Watch at 7:30 AM or arrive later at 8:00 AM for a circuit of the lagoon. A brief mid-morning ‘coffee-stop’ is planned at Headlands Center for the Arts and it would be appreciated if participants come willing to contribute via the onsite ‘tip-jar’ as a thank you to the Headlands Center for the Arts for accommodating our group. This field trip is less suitable for beginners.