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

Mt. Diablo Audubon Society is re-starting field trips this fall, after a year-and-a-half hiatus due to the COVID-19 pandemic. There are some changes from the way we used to do things, however. 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. Go on a field trip, or volunteer at a conservation event. Whatever your interests, MDAS can help deepen your connection to local birds and birders.

Volunteers Needed

MDAS has the following positions available for anyone with an interest in supporting our mission of Connecting People with Birds.

Outreach Coordinator is responsible for coordinating volunteers to staff MDAS booths and tables, etc at local festivals and other public events at which MDAS has a presence. This is an MDAS Board position.

Sales Manager handles sales and inventory of publications and merchandise, conducts raffles and silent auctions at membership meetings, and maintains financial records of sales. This is an MDAS Board position.

The Quail Editor is responsible for the publication of the monthly chapter email newsletter. This is an MDAS Board position.

Web Editor is responsible for making updates to the MDAS website content as needed. This is an MDAS Advisory position.

If you or someone you know is interested in any of these positions, please send an email to MDAS President Jerry Britten at . For more information about the responsibilities of these positions, click HERE.

Upcoming Events

Feb 05

MDAS Field Trip—Thornton Area/Cosumnes Preserve

FEBRUARY 5 @ 8:45 AM - 1:00 PM

Thornton Area/Cosumnes Preserve Saturday, February 5, 8:45 AM-1 PM Leader: Ethan Chickering, 925-890-3833 The major portion of the birding is done along Woodbridge Road and the Isenberg Crane Reserve,  and at the Cosumnes River Preserve.  In winter these areas are thick with Sandhill Cranes, Snow, Greater White-fronted and Cackling Geese.  Also present will be many […]

Feb 12

MDAS Field Trip—Bodega Bay

FEBRUARY 12 @ 9:15 AM - 2:00 PM

Bodega Bay Saturday, February 12, 9:15 AM-2 PM Leader: Hugh Harvey, 925-935-2979 Many opportunities for spotting great birds are available on this trip.  Wintering shorebirds and waterfowl sometimes number in the 1000s.  We will not be attacked by any of The Birds in Hitchcock’s famous movie.  After meeting at The Tides Restaurant, we will stop […]

Feb 23

MDAS Field Trip—Walnut Creek City Parks

FEBRUARY 23 @ 8:30 AM - 1:00 PM

Walnut Creek City Parks Wednesday, February 23, 8:30 AM-1 PM Leader: Hugh Harvey, 925-935-2979 Starting in Heather Farm Park, we will walk around the large, mostly natural pond, birding along the way.  We will visit one or two other parks within the city, to be determined the day of the trip. Rating: Category 2-Moderate Elevation change: N/A […]

Feb 26

MDAS Field Trip—Los Banos/Panoche Valley

FEBRUARY 26 @ 8:00 AM - FEBRUARY 27 @ 3:00 PM

Los Banos/Panoche Valley Saturday/Sunday, February 26-27, two full days Leaders:  Beth Branthaver and Hugh Harvey On Saturday this trip takes us through marshy areas of the Central Valley, where we should see large numbers of waterfowl, raptors and waders.  Sunday will be a visit to the Panoche Valley, which may have more raptors and other […]