The Martin Griffin Preserve is open seasonally for visitors and schoolchildren to explore. In the fall and spring, the preserve hosts its well-regarded nature education programs, which serve thousands of elementary schoolchilden every year. During the spring, summer and fall, the preserve is open to visitors.
Hours vary depending on season, please call ahead: 415-868-9244, ext 110.
Spring & Summer Hours:
April 4 - June 2: open Tuesday–Friday, 2–4pm by appointment.
June 6 - July 29: open Tuesday-Friday, 10am-4pm.
OPEN Saturdays, May 6 - July 29, 2017.
SEE CALENDAR FOR SATURDAY PROGRAMS
NATURE BOOKSTORE: Come browse our selection of field guides, local natural history books, stationary, gifts and nature-inspired toys and books for children. All proceeds from sales in the not-for-profit store help fund ACR programs. ACR members receive a 10% discount.
ADMISSION: Suggested donation of $15-25 per person supports our programs and management of the 5,000 acres of wildlife sanctuaries owned by ACR. All donations are greatly appreciated!
Martin Griffin Preserve
4900 Shoreline Highway 1
Stinson Beach, CA
Click here for directions, map and public transit info.
Phone: 415.868.9244 ext. 110
The Preserve is located between the towns of Stinson Beach and Bolinas in west Marin County, California. Parking is very limited, carpooling is encouraged.
Visitors are encouraged to hike over eight miles of fern-lined trails, discover ponds with newts and other aquatic life, enjoy a picnic under the redwoods and explore our bookstore, as well as take in views of the birds on Bolinas Lagoon. On spring and summer weekends, volunteer ranch guide naturalists are on hand to lead hikes and answer questions about the history, stewardship and preservation of the Preserve.
To make an appointment during the week, call 415.868.9244 ext. 110
Upcoming events at Martin Griffin Preserve
- Spring Work Day - March 4
Help us with trail work, library work, pulling weeds, planting native flowers or cooking the lunch (ACR will provide lunch). Bring your favorite tool and gloves for outdoor projects. 9:15am - 1pm. Registration required. Click here to register by email or call 415.868.9244, ext. 110
- Nature Guide Training - training begins March 11
ACR Nature Guides interpret the natural environment of Martin Griffin Preserve and its many unique natural features for hundreds of visitors each year. Join us for our next Nature Guide training, which will start on March 11th and occur over 8 Saturdays in March & April 2017.
Learn more about the important role of a Nature Guide.
- Annual event: Mothers Day Picnic, Sunday, May 14 – annual event for families held on Monther's Day! Bring families and friends to the magnificent meadow of Volunteer Canyon and enjoy time outdoors, a picnic in the meadow and a hike up the canyon. Proceeds benefit Audubon Canyon Ranch and Marin Audubon Society. $28 per adult; $12 children 12 and under.
- Conservation Talks & Nature Connection Days - Saturdays, May 5 - July 29
See Calendar for full listing of events.
Looking for information on our Heronry?
For more than 70 years, Martin Griffin Preserve hosted one of the most significant and well-studied Great Blue Heron, Great Egret and Snowy Egret nesting sites on the West Coast, with as many as 175 breeding pairs of herons and egrets nesting in the tops of the redwood trees in Picher Canyon. In 2013 the preserve nesting sites were abandoned in favor of others on the western shore of Bolinas Lagoon and elsewhere in the Bay Area. Although no one knows why the birds left, we suspect avian predators (Bald Eagles) as the likely cause.
While the herons and egrets did not return to Martin Griffin Preserve in 2014 or 2015, the productivity of the new nests established on the western side of the lagoon since 2013 indicates that the quality of feeding areas and the availability of food in Bolinas Lagoon has continued to be very good. In fact, egrets with successful (undisturbed) nests in the Bolinas colony were able to provision and fledge more young, on average, than egrets nesting in most other areas of the San Francisco Bay region.
Although we don’t know if the birds will return in 2017, ACR continues to monitor heron and egret nesting activities along Bolinas Lagoon. Get the latest updates here: http://egret.org/thebirds
Call 415.868.9244 ext. 110