Sequoia Audubon Society
                              San Mateo County, California

Sequoia Audubon Field Trips

SAS Field Trip
Sweetwood Group Camp, Half Moon Bay. Trip led by Malia DeFelice & Chris Hayward (on the far right.) Photo by Malia DeFelice

Visitors and guests are welcome!

  • All trips are open and suitable for beginners unless specifically marked.

  • Trips marked as Beginner's Trips include advice on binoculars and telescopes, and a short open-ended discussion on birding and the environment.

  • It is always a good idea to check with the field trip LEADER for confirmation on trips beyond the immediate area in case of last minute changes.

  • Note that some trips require reservations, see the individual descriptions for requirements.

  • Further information may be obtained from the listed Trip LEADER or from

  • A description for the event icons can be found at the bottom of the page.

  • This listing also includes trips and events not sponsored by Sequoia Audubon Society - listed for your information, only.

Note: All phone numbers are for Area Code 650, unless otherwise stated.

Recurring Activities


Weekday Walks and Field Trips with Donna Pomeroy on the First Wednesday of every month to some places we may not normally bird and usually in San Mateo County. For all trips carpooling is preferred. Contact Donna to arrange if a carpool location is not already suggested. Rain cancels trips.

Trip details found in dated listings below.

Leader: Donna Pomeroy

nature walk or viewingField TripPescadero Marsh – State Park Docent Nature Walks

First Sunday of each month is a morning walk starting at 10am till 12 Noon

The Third Sunday of each month is an afternoon walk starting at 1pm till 3pm

  • Walks in April are on the 5th and 19th
  • Walks in May are on the 3rd and 17th
  • Walks in June are on the 7th and 21st

The California State Park Docents will lead a field trip to learn about the marsh. The docents will point out the plants and animals that inhabit this San Mateo County treasure. If it is not raining, meet in the parking lot just over the bridge at Pescadero State Beach. Wear clothing in layers for cold and windy to sunny weather. Heavy Rain Cancels.

Questions: Call Rita Jennings at 650-728-2254

Directions: Go south from Half Moon Bay on Hwy 1, about 12 miles. Just past the bridge over Pescadero Creek, look for the south parking lot. If you get to the intersection of Pescadero Road and Hwy 1 you have gone too far.

beginner and family walk Beginner/Family Nature Hike


Don't forget to check Other Activities for field trips of interest not sponsored by SAS.

Field TripfeeJasper Ridge Biological Preserve, Stanford University 
Saturday, April 11, 7:50am – half day

Trip is limited to twenty people. E-mail Sonny to reserve a space. Those without e-mail call (650) 814-8028. There is a fee of $5 per person.

Meet in the parking lot on the right side of Sand Hill Rd as you head west toward the Preserve (near the freeway at the intersection of Lawler Ranch Road and Sand Hill Rd.). At the parking lot people are expected to form their own carpool, as carpooling is now required to minimize the number of cars on the Preserve. Caravan with a leader from the parking area between 7:50 AM and 8:00 AM only, the gate will then be open. (DO NOT LEAVE EARLIER, AS PARKING OUTSIDE THE GATE IS NOT ALLOWED, SINCE IT POSES AN UNACCEPTABLE TRAFFIC HAZARD!) From I-280, the main gate is on the left side of the road about 2 miles West (away from the freeway) on Sand Hill Rd. Trip involves 2-3 miles of moderately strenuous walking, and goes rain or shine.

Leader: Sonny Mencher

Field TripEdgewood County Park
Sunday, April 12, 8:00am - hike will last 3-4 hours

Hike through oak woodlands and natural meadows. Look for California Thrasher, Wrentit, Oak Titmouse and Western Bluebird year round. Hike 3-5 miles with some hills.

Directions: Take 280 to Edgewood Rd. in Woodside. Go east down Edgewood to the park entrance on the right. Meet at the Nature Center.

Leader: TBA Contact: Ginny Marshall

Field Tripout of area trip The Pinnacles National Park
Wednesday, April 15, 8:00am– 3:00pm - whole day trip

The Pinnacles lies just south of Hollister and affords the opportunity to see California Condor in the wild. We'll also look for Canyon Wren, Lawrence's Goldfinch, Greater Roadrunner, Prairie Falcon and more.

Directions: Take Hwy 101 south through the city of Gilroy to Hwy 25 south. On Hwy 25, go through the town of Hollister and continue about 30 miles to Hwy 146. Turn right on Hwy 146, then turn left into the Pinnacles Campground and Visitor Center. Allow 2 hours driving time. $5.00 entrance fee. Bring a flashlight for walking through the caves. Contact Leslie to carpool.

Leader: Leslie Flint

Field TripAlpine Pond and Horseshoe Lake
Saturday, April 18, 8:30am - Noon

Join Malia DeFelice and Chris Hayward and explore two birding gems. The first part of the day will commence at Alpine Lake (also called Alpine Pond). We will hike around Alpine Lake and take some side trails, exploring diverse habitats of willows, chaparral, mixed oak, madrone and conifer forest. Our moderately easy hike has some gain and loss in elevation and will start and end at Alpine Lake. From there we will carpool to Horseshoe Lake a short distance to the south and begin the second part of the day. We will hike around Horseshoe Lake and explore parts of fir knoll and the Christmas tree farm. We'll look for Ash-throated Flycatcher and Black-throated Gray Warbler.

Directions: Meet at the Russian Ridge Open Space Preserve parking lot at the intersection of Skyline Blvd. (Hwy 35) and Alpine Rd. Restrooms are located at the parking lot and at the south end of Alpine Lake. Wear layers. Temps can be cool under the forest canopy and quite warm in the open grassland areas. Bring water and sunscreen.

Leader: Malia DeFelice and Chris Hayward 650-346-2009

Field Tripmotor tour Mines Road
Sunday, April 26, all day road trip. 

Save the date - all day road trip. Leader to be announced

Contact: Ginny Marshall for details.

Field TripFiloli Estate
Saturday, May 2, 8:30 AM to Noon  

Filoli Estate is the property of the National Trust for Historic Preservation.  We have been invited for a morning of birding at this beautiful site on the edge of the San Francisco watershed land.  The grounds of Filoli have a beautiful formal garden surrounded by large oaks and trails leading to riparian, redwood and farm habitats.  Over 96 species of birds have been found here. 

Reservations required because this trip is limited to 20 people maximum (sorry, no children under 14). 

Participants may remain after the field trip to walk through the house and /or formal gardens at no charge.  No food or picnicking is allowed but light food and beverages at the Cafe are available for purchase and the gift shop will be open.

Directions: Take Hwy 280 to the Edgewood Road exit; go west.  Turn right/north on Canada Road and drive approx one mile to the entrance of Filoli.  We will meet in front of the Visitors Center.  Heavy Rain Cancels.

Leaders: Sue James and Martha O'Neal; Call Sue James 650-348-0315 to reserve your spot.

Field TripEdgewood County Park
Sunday, May 10, 8:00am - hike will last 3-4 hours

Hike through oak woodlands and natural meadows. Look for California Thrasher, Wrentit, Oak Titmouse and Western Bluebird year round. Hike 3-5 miles with some hills.

Directions: Take 280 to Edgewood Rd. in Woodside. Go east down Edgewood to the park entrance on the right. Meet at the Nature Center.

Leader: Susie Hons

Field TripBurleigh Murray State Park
May 13, (Second Wednesday) 8:00 am – 12:00 pm 

Burleigh Murray State Park is a hidden treasure on the coast.  It has very low visitor usage and a very high density of breeding birds.  The only trail is the mile-long, old ranch road that leads up to an historic and picturesque barn.  The high number of singing birds will keep this walk at a slow pace.  This is a great location to learn and practice birding by ear. Morning fog is common here, but it usually burns off and it can be warm and sunny.

Directions: We will meet at the lower parking lot to the Johnston House, located on Higgins-Purisima Road in Half Moon Bay. Higgins-Purisima Road begins just off of SR1, going east where Main Street ends. The Johnston House is the big white 1850s farmhouse on the hill.  We will caravan to Burleigh Murray, which is 1 ½ miles up Higgins-Purisima Road from here.

Leader: Donna Pomeroy

Field TripWatershed Walk
Sunday, May 17, 8:30am - 3:00pm – all day trip

We will walk about 4 miles on this fairly level ridge top in the San Francisco Watershed above Crystal Springs Lake. This is a chance to bird an area not open to the public. 

Contact leader to reserve space. Details on location will be provided.   

Leader: Ginny Marshall

Field TripDevil's Slide Trail
Saturday, May 23, 9:00am - Noon

Devil's Slide Trail is a 1.3-mile multi-use trail, converted from a former segment of Highway 1 that gives hikers, runners, bicyclists and equestrians access to the rocky heights of Devil's Slide above the Pacific Ocean. At provided overlooks, trail users may rest on benches and gaze through observation scopes and take in the view of the rocky coastal waters below. Interpretive signs are placed at key points along the trail and describe the history, geography and the marine and avian communities that live and migrate here. We will explore this newly opened trail. Rock Wren, Peregrine Falcon and sea and land birds will be on our search list. We will stop and look at the "Murre Rock" where a successful project brought pairs of Common Murre back to nest on "the rock" as they had ceased nesting after a devastating oil spill in the 1980's. There are restrooms at the trailhead. Be prepared for wind and cool weather. If you have a scope, please bring it, otherwise, we will have scopes for viewing seabirds.

Directions: The Devil's Slide Trail is located off of Highway 1 between Pacifica and Montara. Meet at the parking lot at the south end of the Tom Lantos Tunnel on SR1.

Leaders: Malia DeFelice and Chris Hayward 650-346-2009

Field TripMori Point – Pacifica Birding 
Wednesday, June 3, 8:30 – 11:30am 

Join us at Mori Point for fascinating birding in a changing habitat. Mori Point has been undergoing restoration by Trails Forever, including a new boardwalk, man-made ponds for Red-legged Frogs, and plantings of native vegetation – all of which is attracting birds. California Thrashers have returned after an absence of 30 years.

Directions: Meet at 8:30 AM at the trailhead at Bradford Way, Pacifica, and dress warmly!

Leader: Leslie Flint contact:

Field TripfeeSan Pedro Valley Park
Saturday, June 13, 9:00am - Noon

San Pedro Valley County Park is a beautiful wilderness area located in the foothills of the Santa Cruz Mountain Range in the city of Pacifica. Expect to see or hear riparian breeders such as Black-headed Grosbeak, Swainson's Thrush, Wilson's and Orange-crowned Warblers.

Directions: Take SR 1 to the city of Pacifica, 10 miles south of San Francisco or 12 miles north of Half Moon Bay. Turn east on Linda Mar Boulevard. Drive for about two miles, to the end of Linda Mar. Turn right on Oddstad Blvd. and make an immediate left into the Park. To park inside the park there is a $6.00 fee. We will meet at the Visitor's Center.

Leaders: Malia DeFelice and Chris Hayward 650-346-2009

Field TripEdgewood County Park
Sunday, June 14, 8:00am - hike will last 3-4 hours

Hike through oak woodlands and natural meadows. Look for California Thrasher, Wrentit, Oak Titmouse and Western Bluebird year round. Hike 3-5 miles with some hills.

Directions: Take 280 to Edgewood Rd. in Woodside. Go east down Edgewood to the park entrance on the right. Meet at the Nature Center.

Leader: Susie Hons

Field TripLower Windy Hill
Sunday, June 21, 8:00am - 12:00

Check out Sausal Pond and hike 2-3 miles through oak woodlands.  Look for Wood Ducks, Ash Throated Flycatcher, Blue-gray Gnatcatcher and other oak woodland specialties.

Directions: exit Sand Hill Road from 280. Go west to Windy Hill Open Space parking lot.

Leader: Ginny Marshall

Additional Field Trips will be added as the information becomes available.

Legend of Field Trip Symbols

Field Trip Wildlife Viewing

fee Fee required for part or all of this event

out of area trip Trip beyond local area, perhaps including an overnight stay

volunteer opportunity Volunteer Opportunity

beginner and family walk Beginner/Family walk

nature walk or viewing Nature Walk or Viewing

pelagic trip Pelagic (Ocean) Trip

motor tour Motor Tour. May include car pooling.

wheelchair accessible Wheelchair Accessible


2015 S.A.S.