Keep Learning

Our classes range from Beginning Birding to Birding By Ear to more intensive courses for advanced birders. Experts help you name your usual backyard visitors, and find and ID more unusual species.

Protect Habitat

To protect birds, we must defend the places in which they live. Help us support campaigns to preserve wildlands, wetlands and parklands. Join our Community Science bird count projects, and meet fellow enthusiasts!

Go Birding

Field trips are free and range from half-day local destinations, to longer-distance weekend trips to various birding hotspots. Open to members and non-members alike; enjoy a relaxed and informative stroll with our knowledgeable volunteers.

Keep Learning

Our classes range from Beginning Birding to Birding By Ear to more intensive courses for advanced birders. Experts help you name your usual backyard visitors, and find and ID more unusual species.

Protect Habitat

To protect birds, we must defend the places in which they live. Help us support campaigns to preserve wildlands, wetlands and parklands. Join our Community Science bird count projects, and meet fellow enthusiasts!

Go Birding

Field trips are free and range from half-day local destinations, to longer-distance weekend trips to various birding hotspots. Open to members and non-members alike; enjoy a relaxed and informative stroll with our knowledgeable volunteers.

Connecting People with Birds

The Mt. Diablo Audubon Society is committed to protecting birds and  preserving their habitat, and to connecting people of all ages to the fascinating world of birds, with monthly meetings, field trips, classes, and conservation and advocacy programs. The chapter serves the San Francisco Bay Area’s central and eastern Contra Costa County, a bountiful birding territory in which roughly 350 species have been spotted – 150 of them nesting. We welcome everyone interested in any degree of participation, and at all levels of experience.

Spotlight: Birding Trips

Connecting People with Birds

Wild Birds Unlimited is restarting Bird Walks! Sign up at their store in Pleasant Hill.

Mt. Diablo Audubon Society has resumed field trips after a year-and-a-half hiatus due to the COVID-19 pandemic. Please refer to Birding Field Trips page for more information.

Mt. Diablo Audubon on Facebook

Get Involved

Connecting People with Birds

Take a class, or join our popular monthly programs. Take part in a bird count, or mix with legislators and fellow birders on Advocacy Day. Attend or lead a field trip. Volunteer for a leadership position or at a conservation event. Whatever your interests, MDAS can help deepen your connection to local birds and birders.

Upcoming Events

Jun 01

Monthly Program: June 2023

JUNE 1 @ 7:00 PM - 9:00 PM

The Mt. Diablo Audubon Society will meet Thursday, June 1, in the McHale Room of the Pleasant Hill Community Center at 320 Civic Drive, Pleasant Hill, 94523.   Everyone is welcome to bring a snack to share, if they wish. Parking is free.   6:30 PM Doors Open 7:00 PM Birding Info: Winners of the […]

Jun 03

MDAS Field Trip — Outer Point Reyes

JUNE 3 @ 8:30 AM - 3:00 PM

Outer Point Reyes Saturday, June 3, 8:30 AM to 3 PM Point Reyes is one of the premiere birding locations in Northern California, a great spot to find rarities during migration—like the Prairie Warbler pictured on the registration page (image by Beth Branthaver). MDAS tries to visit at least twice a year. On this trip […]

Jun 24

The Beaver Festival in Martinez

JUNE 24 @ 10:00 AM - 3:00 PM

Join Mt. Diablo Audubon Society at The Beaver Festival in Martinez! The Beaver Festival is finally back! Show your support for urban beavers and join your friends and favorite nature organizations at the FOURTEENTH festival celebrating the Martinez Beavers. Beavers have become big news lately but this is the festival that started it all. Don’t […]

Jul 21

MDAS Field Trip — Hayward Regional Shoreline, Frank’s Dump

JULY 21 @ 3:30 PM - 6:00 PM

Hayward Regional Shoreline, Frank’s Dump Friday, July 21, 3:30 PM to 6 PM For a shorebird spectacle, we will visit the hotspot known as “Frank’s Dump” in late afternoon when the sun will be at our backs, allowing good viewing of shorebirds congregating on the dry flats at high tide. At this time of year […]