Next Meetup

Birding Pine Flat with Two ACR Ornithologists
We’ll stop at several point-count stations to bird and to learn about the Songbirds of the Central Mayacamas project on Pine Flat Road. Then we’ll walk through Pine Flat where we hope to see and hear Purple Martin, Pileated Woodpecker, California Thrasher, Mountain Quail and others. Our guides will be ACR’s Avian Ecologists - Scott Jennings & David Lumpkin. You can download the Modini Mayacamas Preserves Bird List here: Click here to register via Eventbrite $20 per person suggested donation. Contributions support the preservation, education and conservation science programs of Audubon Canyon Ranch. All donations are greatly appreciated! Click here to learn more about supporting ACR: Questions? Contact ACR Education Specialist David Self by email [masked] or by phone[masked] ext. 503.

Beside Pine Flat Rd at Red Winery Rd

4020 Pine Flat Rd · Geyserville, CA

What we're about

Public Group

This group is for folks who love the views, wildlife, wildflowers, nature walks, conservation projects and/or just hiking on the Modini Mayacamas Preserves, near Healdsburg. The Preserves ( span from 400' – 2,800' elevation, making it unique among protected areas. We look forward to exploring these wild lands with you through the seasons and years, and we hope you’ll join our corps of local volunteers to help us protect the habitats and wild creatures that call this region home.

Hike reservations through Eventbrite ( are required. Click here ( for a list of upcoming events!

Access to the Preserves is by guided hiking programs ( or by permit ONLY, but you are welcome any time to enjoy birding and views from the pullouts along Pine Flat Road, which climbs a steep ridge through the length of the Preserves.

Please drive slowly and carefully - this is a rough, narrow, windy, one-lane country road with occasional blind curves. The road is also very popular with bicyclists (and some hikers too), so please use extra caution.

There are no facilities, no restrooms, no restaurants, no drinking water; please come prepared for steep, wild terrain.

The Modini Mayacamas Preserves are owned and managed by Audubon Canyon Ranch ( (ACR), a 501(c)(3) non-profit organization that relies on the generosity of individuals, corporations and foundations to fund its programs. ACR was formed in 1962 to protect the Bolinas Lagoon from development. Today, ACR acts as guardian of a system of nature preserves spanning 26 properties in Marin, Sonoma and Lake counties. These 5,000 acres provide significant habitat to wildlife and have been placed in ACR's care by generous donors to steward and protect in perpetuity.

Click here to learn more on ACR's website (

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