The 2015 Season: Putting Nature First

Picher Canyon and Historic Heronry Temporarily Closed 

ACR is committed to protecting the natural resources of its properties using science-based management. In an effort to promote reestablishment of the heron and egret nesting colony that was abandoned by the birds after 60 years, ACR will continue closure of Martin Griffin Preserve’s Picher Canyon during the 2015 nesting season.

ACR’s Education Programs for students continue in adjacent Volunteer Canyon, with no interruption to nature-based learning.

Visiting in General

If nesting habits allow, Audubon Canyon Ranch welcomes the public to the 1,000-acre Martin Griffin Preserve in West Marin annually from spring through mid-December.

On select weekends, trained naturalists called Ranch Guides inform visitors about the nesting colony, pond life and the history of ACR.

On weekdays, we ask visitors to park, then check in at the ACR bookstore before continuing on a self-guided hike.

Created after stopping a freeway and marina development in West Marin, the preserve offers several hiking trails for exploring the canyons and their diverse ecosystems. Enjoy forests of Douglas fir, coast redwood and California bay, as well as open scrublands and breathtaking views of the Bolinas Lagoon and Pacific Ocean.

We welcome visitors to bring a picnic and then hike to Henderson Overlook for a bird's-eye peek at the courting and incubation habits of Great Egrets in a historic heronry. Or, visit the ponds and peer in to find newts and other aquatic critters. Don't miss the historic education hall, nature bookstore, birdhide and ranch yard, all of which are accessible to people with disabilities. 

See the Frequently Asked Questions page for more information. 

Nature Bookstore

The ACR Nature Bookstore, located on the Martin Griffin Preserve, is open when Picher Canyon is open to the public. 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.


phone 415.868.9244 ext 110

Photo Credits: 

  • Mike Witkowski