Kids at the lookout at Martin Griffin Preserve

Upcoming Events!

New and Interesting at ACR

Cypress Grove Research Center lawn

Did you receive an invitation? We hope you’ll attend! Rsvp here or to Leslie at (415) 868-9244 ext. 110. Didn’t receive an invitation? Become a member at the Sponsor-level today! We’d love to see you at the Cypress Grove Research Center on September 27th.

Docent teaching

Learn from experts. Teach children. Be outside. Become part of community that loves nature as much as you do. Docent Training starts on September 3rd!

Great Egret

Though no nests were attempted on the preserve in 2014, the colony site across the lagoon near the town of Bolinas saw a dramatic increase in nesting Great Egrets. 

ACR eagerly welcomes you back to the Martin Griffin Preserve for fall exploring. Though we limited access during the spring nesting season to encourage the egrets’ return, we've missed our community of nature lovers and bird enthusiasts. Check here for visiting days and hours.