• Rodeo Lagoon – Marin Headlands

    Wednesday, September 17, 2025 7:30/8:15 AM to noon **Please note below start times for this field trip Birding with William Legge and David Wiechers REGISTER HERE Registration is required for this trip. Registration opens on Sunday, September 7 at 8 AM. Join William and David for this third fall migration field trip at Rodeo Lagoon. This is their long-time “patch,” which never seems to disappoint birders with daily variations in species and a good chance of an unusual sighting. On this trip, our group will be targeting Parasitic Jaeger, migrating shorebirds and scarcer migrant passerines. We will begin the morning with a Sea Watch from Rodeo Beach at 7:30 AM. Those arriving later may join us at 8:15 AM for a circuit of the lagoon. A brief mid-morning “coffee stop” is planned at the 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. DIRECTIONS: Head south on Hwy 101 and take the last Sausalito exit just before the Golden Gate Bridge. At the exit stop sign, turn right and go under the freeway, then follow the road down to the left. Within 300 feet turn left at the sign to the Marin Headlands (This is the only available left turn before you begin the descent into Sausalito). You should see the tunnel with the five-minute light. Proceed through the tunnel on Bunker Rd to the Rodeo Lagoon Parking Lot at the end. Meet by the bridge over the channel to the beach or join MAS birders with scopes along the nearby beach area.

  • Vaux’s Swifts at McNear Brick and Block – San Rafael

    Wednesday, September 24, 2025 5:30 PM to sunset Birding with Rich Cimino REGISTER HERE Registration is required for this trip.  Registration opens September 14 at 8 am. Join other MAS members for an evening opportunity to witness Vaux’s Swifts during their fall migration through Marin, which occurs in September and October. Dan McNear of McNear Brick & Block has kindly allowed Marin Audubon to access this remarkable site where decommissioned smokestacks provide an important communal roosting place for the swifts. Watching thousands of swifts as they descend into the stacks just before nightfall is an unforgettable sight. At the peak of migration, as many as 19,000 swifts have been counted in one evening. However, keep in mind that the number of swifts varies greatly from night to night and can range from a few hundred to thousands. Like everything else in birding, there are no guarantees! Sunset on the evening of our visit will be at 7:03 PM, so plan on arriving on time to be ready. If the weather on the day of our trip is particularly cool or windy, the swifts are likely to enter the stacks early, so plan accordingly. Bring scopes, binoculars, and, if desired, folding chairs for your seating comfort. It can be chilly at dusk. Please stay with our group and do not enter any of the private areas on the property. Use soft voices and be sure to respect the privacy of local residents. Upon arrival, meet inside the yard by the office building on the right side of the parking lot, where you will be checked in from the registration list. DIRECTIONS: From Hwy 101 take the Central San Rafael exit. Head east on Third St./Point San Pedro Rd for about 3.5 miles. The brickyard will be on the right. The address is 1 McNear Brickyard Rd. Park as close to the San Pedro Road entrance as possible. Please do not drive to or park near the closed gate.

  • The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael

    Thursday, October 2, 2025 8:30 AM to noon Birding with Mark Clark Registration is not required. All participants are welcome to join this trip. On this trip we especially welcome beginning birders to join Mark Clark, along with bird enthusiasts of all levels, on our monthly 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. There is a portable restroom in the parking area for public use. 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.

  • Abbotts Lagoon and the Inverness Tennis Area – Birding in Marin

    Birding in Marin - Series 10, Trip 10 Saturday, October 4th, 2025 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 September 24th at 8:00 AM. Abbotts Lagoon on the Pacific Coast in the Point Reyes National Seashore is one of Marin’s premier birding locations, sporting an eBird sum of 283 species. Fall migration south along the coast brings many birds to this area. Some that we hope to see include Ferruginous Hawk, Baird’s and Pectoral Sandpipers, Red-necked Phalaropes, Lapland Longspur, Horned Lark and Pipits. Hundreds of ducks of a dozen species, geese, herons, Peregrines and Ospreys are also likely visitors. Plus, you get some exercise; out and back is about 2 miles (some in sand). Pack a lunch for a picnic on the beach and bring a couple of layers for the fresh ocean air and help us spot a rarity. After leaving Abbotts Lagoon, we plan to stop along Tomales Bay near the Inverness Tennis club to look for Pine and Alder woodland birds. A surprising number of species have been seen here and there is a nice little beach where we usually find several kinds of gulls. DIRECTIONS: From Point Reyes Station on Highway 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. Car Pool if you can, allow 1.5 hours from San Rafael.

  • Aves Argentinas: From Rescue to Resilience

    Thursday, October 9, 2025 7:00 PM – 9:00 PM Speakers: Hernan Casanas and Tamara Zalewski Event is free. Register HERE for this speaker series. Topic: For over a century, Aves Argentinas has been at the forefront of bird and nature conservation in Argentina. As the country’s leading ornithological and conservation NGO and the national partner of BirdLife International, its mission is to protect birds and biodiversity through science, education, advocacy, and collaboration. Hernan and Tamara will discuss how by tending to critically endangered bird species and landscapes they have built large-scale conservation programs. Speaker Bios: Hernan Casanas Hernan is the Executive Director of Aves Argentinas, responsible for the organization’s strategies and the building of strategic alliances, which have been instrumental in the creation of national protected areas.  He has a degree in Biological Sciences from the Universidad de Buenos Aires and has written over 100 publications on the environment and ornithology. Tamara Zalewski Tamara grew up in Patagonia, where she learned to love and care for nature from a young age. She graduated from college with a degree in fine arts but went to work to protect nature professionally. She leads partnership development efforts, looking for partners worldwide who are driven to save species and ecosystems.

  • Marin Art and Garden Center – Ross

    Saturday, October 11, 2025 8:00 AM to 10:30 AM Birding with Rich Cimino No registration required. 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 in the Marin Art and Garden Center parking lot located at 30 Sir Francis Drake Blvd. in Ross.

  • Rodeo Lagoon – Marin Headlands

    Wednesday, October 15, 2025 7:30/8:15 AM to noon **Please note below start times for this field trip Birding with William Legge and David Wiechers REGISTER HERE Registration is required for this trip. Registration opens on Sunday, October 5 at 8 AM. Join William and David for this fourth fall migration field trip at Rodeo Lagoon. This is their long-time “patch,” which never seems to disappoint birders with daily variations in species and a good chance of an unusual sighting. On this trip, our group will be targeting Parasitic Jaeger, migrating shorebirds and scarcer migrant passerines. We will begin the morning with a Sea Watch from Rodeo Beach at 7:30 AM. Those arriving later may join us at 8:15 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. DIRECTIONS: Head south on Hwy 101 and take the last Sausalito exit just before the Golden Gate Bridge. At the exit stop sign, turn right and go under the freeway, then follow the road down to the left. Within 300 feet turn left at the sign to the Marin Headlands (This is the only available left turn before you begin the descent into Sausalito). You should see the tunnel with the five-minute light. Proceed through the tunnel on Bunker Rd to the Rodeo Lagoon Parking Lot at the end. Meet by the bridge over the channel to the beach or join MAS birders with scopes along the nearby beach area.

  • Olompali State Historic Park – Fall Bird Walk

    Wednesday, October 15, 2025 8 AM to noon Birding with Rich Cimino and Evan Weissman No registration required. All participants are welcome to join this trip. Join us to explore for fall migrants and year-round residents in Olompali’s diverse ecosystems. Bird enthusiasts of all experience levels are welcome! We expect to see and hear thirty or more species – including woodpeckers, raptors, sparrows, and more – as we walk along the old ranch road, exploring grasslands, historic gardens, savannah, and up to the riparian zone by the park’s small reservoir. We’ll walk at a fairly slow pace, about 2 miles roundtrip, on gravel and well-packed dirt trails, with moderate slope in portions. There are several picnic tables to rest at along the partially shaded route. Because the walk is a slow out-and-back, folks are welcome to join late or leave early as needed. Note that the only restrooms are at the parking lot. Wear layered clothing, walking shoes, bring snacks, sunscreen, plenty of water, and binoculars and a birding field guide if you have one. We’ll also have two binoculars to loan. There is an $8 parking fee, payable by cash, check, or via smartphone with QR code at the parking lot. No fee is charged if you borrow a free State Park pass from your local public library.

  • Farallon Islands Boat Trip – From Clipper Yacht Harbor, Sausalito

    Join us for a day of seabird and marine mammal watching as we head out to the Farallon Islands and offshore waters. Naturalist David Wimpfheimer will be our guide aboard Captain Christian’s power catamaran, Outer Limits. When we last did this cruise, sightings included Humpback Whales, Laysan and Black-footed Albatross, Tufted Puffin, Rhinoceros and Cassin’s Auklets, shearwaters and jaegers. We will get a close-up look at the islands and hear about their interesting natural and human history. This is a trip that both experienced and first-time birders and nature lovers enjoy.

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  • Las Gallinas & Hamilton Wetlands

    Birding in Marin, Season 10 – Trip 11 Saturday, November 1, 2025 8:30 AM to mid afternoon Birding with Jim White and Bob Battagin Register HERE for this Field Trip Registration required. Registration opens at 8 AM on October 22 Join Jim and Bob on an easy, birdy walk of 1.5 miles around the Las Gallinas ponds where we are likely to see 10 species of ducks, five of herons, five of raptors, five of sparrows and some rails like Ridgway’s, Sora, and Virginia with Gallinules, coots, swans and geese! After lunch we are going to visit the Hamilton Wetlands, restored by the Army Corp. of Engineers in the recent 5–10 years to the SF Bay ecosystem, which have become the winter home of some ten thousand birds.We will try to find 10 species of shorebirds here while staying alert to many other possibilities. DIRECTIONS: From 101 north San Rafael take the Lucas Valley/Smith Ranch Road exit east. In about 0.5 miles, immediately after crossing the RR tracks, left turn and follow the road another 0.5 mile to the Las Gallinas parking at the end. To the Hamilton Wetlands return to 101 North, take the second exit, Nave Drive toward Hamilton. Stay on Nave Dr, heading north, to Main Gate Dr and turn right. Go east to Hanger Ave and park along the levee behind Hanger 7.

  • The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael

    Thursday, November 6, 2025 8:30 AM to noon Birding with Mark Clark Registration is not required. All participants are welcome to join this trip. On this trip we especially welcome beginning birders to join Mark Clark, along with bird enthusiasts of all levels, on our monthly 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. There is a portable restroom in the parking area for public use. 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.

  • Motus Wildlife Tracking System

    Topic:
    The Motus Wildlife Tracking System ('Motus') is an international collaborative research network that uses automated radio telemetry to study the movements of birds, bats, and insects. Motus, meaning "movement" in Latin, uses coordinated arrays of receiver stations that detect animals carrying miniaturized radio transmitters, enabling researchers to simultaneously track hundreds of individuals at local to hemispheric scales. Developed as a program of Birds Canada, Motus provides key insights into animal movement and behavior that are fundamental to wildlife conservation and habitat management. This presentation will provide an overview of the Motus system and its research applications.
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  • Bothin Marsh Preserve – Mill Valley

    Friday, November 21, 2025 8:00 AM – 11:00 AM Birding with Michelle Muir Register HERE for this Field Trip Registration required. Registration opens at 8 AM on November 11 Michelle Muir along with Rich Cimino welcome beginning birders, and bird enthusiasts of all levels, on a walk through the Bothin Marsh Preserve.  Enjoy scenic bay views as we look for early winter waterfowl, shorebirds, songbirds and an occasional raptor.  Some that we hope to see include American Wigeons, Green-winged Teal, Buffleheads, Black-necked Stilts, Greater Yellowlegs, Egrets and a several species of gulls and sandpipers.  This will be a 3 mile relatively flat and easy to navigate walk, primarily on the Mill Valley-Sausalito Multiuse Pathway with a few dirt path detours.  We will meet at the entrance to the Mill Valley Community Center, 180 Camino Alto, near the flagpole circle.  Restrooms are available at the Sewage Agency, about 15 minutes into our walk, and at the Community Center at the end of our walk. Heavy rain cancels, with a rescheduled date of Friday, December 5, 2025.  Participants will be notified of cancellation via email by 6:30 am the morning of the walk. Directions: From Hwy 101, take exit 447 toward Blithedale Ave.  Continue on Blithedale for about .7 miles and turn left at Camino Alto to the Mill Valley Community Center.

  • Rodeo Lagoon and Marin Headlands

    Wednesday, November 26, 2025 7:30/8:15 AM to noon **Please note below start times for this field trip Birding with William Legge and David Wiechers REGISTER HERE Registration is required for this trip. Registration opens on Sunday, November 16 at 8 AM. Join William and David for this fifth fall migration field trip at Rodeo Lagoon. This is their long-time “patch,” which never seems to disappoint birders with daily variations in species and a good chance of an unusual sighting. On this trip, our group will be targeting scarcer passerines and other mid-fall migrants. We will begin the morning with a Sea Watch from Rodeo Beach at 7:30 AM. Those arriving later may join us at 8:15 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. DIRECTIONS: Head south on Hwy 101 and take the last Sausalito exit just before the Golden Gate Bridge. At the exit stop sign, turn right and go under the freeway, then follow the road down to the left. Within 300 feet turn left at the sign to the Marin Headlands (This is the only available left turn before you begin the descent into Sausalito). You should see the tunnel with the five-minute light. Proceed through the tunnel on Bunker Rd to the Rodeo Lagoon Parking Lot at the end. Meet by the bridge over the channel to the beach or join MAS birders with scopes along the nearby beach area.

  • The Ponds at the Las Gallinas Valley Sanitary District (LGVSD) – San Rafael

    Thursday, December 4, 2025 8:30 AM to noon Birding with Mark Clark Registration is not required. All participants are welcome to join this trip. On this trip we especially welcome beginning birders to join Mark Clark, along with bird enthusiasts of all levels, on our monthly 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. There is a portable restroom in the parking area for public use. 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.

  • Bahia, Horseshoe Pond and Rush Creek

    Birding in Marin, Season 10 – Trip 12 Saturday, December 6, 2025 8:30 AM to mid afternoon Birding with Jim White and Bob Battagin Register HERE for this field trip Registration is required and opens November 26 at 8 AM MAS acquired and restored to tidal action the diked bay lands around the residential Bahia neighborhood. As the ebbing tide exposes the mudflats thousands of shorebirds now descend to feed, while on the flood tide hundreds of ducks and some gulls float, forage and loaf about. The oak-wooded ridge stretching from Hwy 101 to Bahia, also saved from development by MAS, holds Oak Titmice, White-breasted Nuthatch, Hutton’s Vireo, at least four woodpecker species and many sparrows in the winter. Horseshoe Pond (Homeowners Lagoon) at the southeast end of Topaz is a great place to look for wintering ducks. Goldeneyes, Scaup, Canvasbacks, Buffleheads, and Mergansers seem to like it and it has been Marin’s best place for Barrow’s Goldeneyes the last few years. After lunch we plan to look at the nearby Rush Creek area from the Airport Rd which parallels Hwy 101 north of Atherton. DIRECTIONS: From 101 in north Novato take Atherton Avenue east, take the Y left onto Bugeia which becomes Bahia Drive, near the end at the bottom of the hill take a right onto Topaz, follow Topaz to its end and park.

  • Corte Madera Marsh Ecological Reserve

    Corte Madera Marsh Ecological Reserve Sunday, December 7, 2025 8:30 AM – 12:00 PM Birding with Lisa Hug Register HERE Registration is required. Registration opens November 26 at 8 AM. This field trip is an eBird workshop for those participating in the Christmas Bird Count in Southern Marin County.  We will walk the Corte Madera Marsh Ecological Reserve starting at the Marin Audubon Society site Lookout. The walk is level and easy. We will be making observations using eBird. We will see waterfowl and shorebirds in the estuary as well as upland suburban residents.  Experienced birders and Christmas Bird Count Leaders as well as eBird newbies can enjoy counting and compiling together in an informal and fun setting. Directions: From 101 North, take Lucky Drive Exit to Wornum, turn left on Tamal Vista Blvd and left on Madera Blvd. Go under freeway and take a left on Redwood Highway and turn right into the Trader Joe’s /World Market mall.  Stay to the right and park behind World Market. From 101 South take the Corte Madera exit left over the freeway on Tamalpais Dr. Take a left on Redwood Blvd. and Right into the World Market Mall, staying right and parking behind. Meet in the parking lot.