Sequoia Audubon Society
                              San Mateo County, California

Sequoia Audubon Sponsored Field Trips

Matt Hofeditz photo by Linda Vott
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.

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

Matt Hofeditz at Redwood Shores; photo by Linda Votteri

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


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


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

Field TripAlpine Lake and Ipiwa trail loop
Saturday Apr. 26, 8:30am - hike will last 3 to 4 hours

Join Malia and Chris to explore Alpine Lake and vicinity. We will hike around Alpine Lake through willows, chaparral, and mixed forest, then onto the Ipiwa trail to open grassland. Our moderately easy hike has some gain and loss in elevation and will be 3 to 5 miles. We'll look for Ash-throated Flycatcher and Black-throated Gray Warbler.  This is a lovely hike with some beautiful vistas.

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. 

Leaders: Malia DeFelice and Chris Hayward

Field TripfeeMitchell Canyon
Saturday, May 3, 8:00am-2:00pm 

Mitchell Canyon, on the north side of Mt. Diablo is a great place to see a good variety of oak woodland and chaparral birds. We can hope for migrants and there should still be some wildflowers. We will look for multiple species of flycatchers, vireos and warblers. With luck we may find Western Tanager, Orioles, Lazuli Bunting and with a little more luck, we'll find Hammond's and Calliope Hummingbird and the recently split, Bell's Sparrow.  Expect a gentle incline with a steeper trail to the chaparral habitat. Bring lunch and liquids.

Directions: Take Hwy 92 east to 880 north; continue on to 238 and 580. Take 680 north to Ygnacio Valley Road. Follow Ygnacio Valley Road to a right turn on Clayton Road. Turn right on Mitchell Canyon Road and go to the end. Meet in the Parking Lot. There is a $6 entrance fee. Those who have State Park passes can park free.  Roy can take 3 passengers.  Contact Roy for carpooling.

Leaders: Roy Carlson  650-576-4602

Field TripFiloli Estate
Saturday, May 3, 8:30 AM to Noon 

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 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 as 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 TripBurleigh Murray State Park
Wednesday, May 7, 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 old 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 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 the Johnston House parking area.

Leaders: Donna Pomeroy

Field Tripmotor tour Mines Road – The Ultimate Spring Birding Trip
Saturday, May 10, 8:00 AM (all-day) 

The variety of habitats in the Mines Road area provides a fascinating array of birds not found elsewhere in the Bay Area. On this trip to the Coast Range east of Livermore, we will look for Phainopepla, Prairie Falcon, Lawrence's Goldfinch, Lewis's Woodpecker, and Golden Eagles. Bring a full tank of gas, water, and food. Only two reliable restrooms, one at the lunchtime stop and one in mid-afternoon, are available. Weather is unpredictable, from cold and windy to hot and dry. Heavy rain cancels.

Directions:Take the San Mateo Bridge (Hwy 92) east. Follow the signs to I-580; stay on 580 for about 25 miles to Livermore. Take the South Vasco Road exit and follow Vasco to Tesla Road. Turn right on Tesla; go about ½ mile and turn left on Mines Road. Follow Mines Road about ¼ mile to the Murietta Wells Winery on the right. Pull up to the new gate; go through, and park in the area by the winery, where we will meet. Contact George for carpooling. 

Leaders: George Chrisman  (510) 719-2747

Field Trip Edgewood Park - Butterflies with Liam O'Brien
Saturday, May 10, 11:00am - 2:30pm  

Field Trip for May Program

Bring lunch and liquids - we'll have lunch in the field. Edgewood Park is rather famous butterfly-wise in the last few years with Stuart Weiss's attempt to reintroduce the Endangered Bay Checkerspot (Euphydryas editha bayensis) back into this serpentine outcrop. We will walk about and see what we see. Bramble Hairstreaks (Callophyrs perplex) and Anise Swallowtails using their native Yampah as a host...and of course we will look for Bay Checkspots. It should be good for wildflowers as well.

Directions:  Take I-280 south to Edgewood Road.  Turn right (west) at the exit and go to the "T" with Canada Road. Meet at the casual parking area at the intersection of Edgewood Road and Canada Road. We'll hike to the grasslands from there.  Park along Edgewood or Canada.

Contact: Leslie Flint

Field TripEdgewood County Park
Sunday, May 11,   8:00am - hike will last 3-4 hours

Explore this gem of a park with Susie Hons. 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 TripfeeSan Francisco Bay Bird Observatory
Bird Banding Demonstration, Milpitas, CA
Saturday, May 17, 8am – 10am

SFBBO is a nonprofit with the mission to conserve birds and their habitats through science and outreach. SFBBO conducts research about birds throughout the Bay Area, including mist netting and bird banding studies at its Coyote Creek Field Station in Milpitas.

SAS is invited to attend a group tour of the banding station to learn  about SFBBO's bird banding research and see several different bird species as they are banded. Participants will also get to tour mist nets and explore a restored riparian habitat. Cost is $10 a person, and RSVP is required. To become a member of SFBBO and attend future SFBBO banding demonstrations, bird walks, and other events for free, please visit

Directions will be sent with a confirmation email, along with a description about what to wear and

Contact: Sue Cossins to reserve a space.

Field TripSan Francisco Watershed Walk
Saturday, May 24, 9am – 3pm

Enjoy a leisurely hike in the San Francisco Watershed.   We will hike 5 nearly flat miles through chaparral and Douglas Fir forests, birding as we go as well as learning about the ecology and history of the area. This area is not open to the public and we should have the trail to ourselves.

Directions: will be provided to those who RSVP.

Please RSVP to Leader: Ginny Marshall

Field TripSkyline Open Space Preserve - Horseshoe Lake
Saturday May 31, 8:30am hike will last 3 to 4 hours

Join Malia and Chris and explore Horseshoe Lake and vicinity. We will hike through diverse habitat of chaparral, willows, and mixed forests.  This easy hike will be 2 to 3 miles.

Directions: The main entrance is .9 miles south of the intersection of Alpine Rd. and Skyline Blvd. (SR35).  The turnoff is on the west side of the road. We will meet in the equestrian parking lot, the southern-most lot of the three parking areas. Restrooms are located at the northern and middle parking lots. Wear layers.  Bring water and sunscreen.

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

Field TripGazos Creek & Pigeon Point Lighthouse
Wednesday, Jun.  4, 8:00 am - 12:00 pm

Gazos Creek is a prime location in the county to see and hear our summer resident woodland birds such as grosbeaks, warblers and thrushes.  This lush coastal canyon, with its permanent stream and light traffic, is an excellent birding location.  We will meet at the parking lot at the lighthouse and then carpool to Gazos Creek, since there is limited parking along the pullouts on Gazos Creek Road.  When we return to our cars at the lighthouse, we will spend some time looking at the Pigeon Guillemots and other waterbirds.  Scopes will be useful at the lighthouse, when we look for seabirds.  The weather at the lighthouse can be cold and windy.  Bring layers.

Directions: Take Hwy 1 south from Half Moon Bay for 20 miles.  Turn right at the lighthouse and drive to the end of the road to the parking area.

Leader: Donna Pomeroy

Field Tripout of area trip Northern Sierra Weekend
Yuba Pass, Sierra Valley, Gold Lakes and Other Stops in the Area
June 7, 8 and 9, 2014

Join Martha, Sue and Bob in traveling to the Northern Sierras for a reprise of the SAS yearly trip that Martha led with her husband, Joe Macho, several years back.

The northern Sierra offers a spectacular array of nesting birds. Past trip highlights have included Black-backed and White-headed Woodpecker, Williamson's Sapsucker, Evening Grossbeak, Cassin's Finch, Chipping Sparrow, Hermit Warbler and many more.

The leaders plan to stay at Herrington's Sierra Pines Resort in Sierra City (104 Main St. 430-862-1151), but feel free to choose any other accommodation in Sierra City. Carpools are encouraged. Please register with trip leaders. Trip is limited to 12 participants.

Leaders: Martha O'Neal , Sue and Bob Cossins

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

Explore this gem of a park with Susie Hons. 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 TripMysterious Marbled Murrelets
Saturday, June 14, 5:30am - 7:30am

Field Trip for June Program:

We will be meeting in the vicinity of Gazos Creek Road; location will be specified when a reservation is made for space on this field trip.  We will plan to look and listen for Marbled Murrelets as they fly between the redwood forest where they nest and the ocean.

Leader:  Portia Halbert. Reservations are a must.  

Contact: Leslie Flint

Field TripfeeSan Pedro Valley Park.
Wednesday, June 18, 9:00am -11:30am

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. We will visit the Old Trout Farm Trail and the picnic groves. 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 here on Oddstad Boulevard and make an immediate left into the Park. To park inside the park there is a $6.00 fee.  Seniors park free during the week. We will meet at the Visitor's Center.

Leader: Robbie Fischer

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

wheelchair accessible Wheelchair Accessible

(not an official Sequoia Audubon event)


2014 S.A.S.