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. 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.

The Quail Editor is responsible for the publication of the monthly chapter email newsletter. This is an MDAS Board 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 02

Monthly Program: February 2023

FEBRUARY 2 @ 7:00 PM - 8:30 PM

A 27 Year Wildflower Journey: The Making of Beauty and the Beast: California Wildflowers and Climate Change Rob Badger and Nita Winter Rob Badger and Nita Winter take you behind the scenes on their 27-year journey photographing wildflowers throughout California and the West. It began in 1992 when they discovered and fell in love with […]

Feb 04

MDAS Field Trip — Thornton Area/Cosumnes Preserve

FEBRUARY 4 @ 8:45 AM - 2:00 PM

Birding Cosumnes Preserve and the Thornton Area Saturday, February 4, 8:45 AM-2 PM Tundra Swans, Sandhill Cranes, hawks and grassland birds. Trip will go in light rain. Bring lunch and a beverage. If questions, call the leader. Hike rating: 1 – Easy. Elevation change: Minor Distance: Depending on the route decided. Co-Leaders: Ethan Chickering, 925-890-3833 […]

Feb 11

MDAS Field Trip — Shollenberger Park/Ellis Creek — Rescheduled!

FEBRUARY 11 @ 8:30 AM - 3:00 PM

Shollenberger Park/Ellis Creek, Petaluma Saturday, February 11, 8:30 AM – 3:00 PM (Rescheduled from January 14) Both sites are good for wintering waders, shorebirds, waterfowl and a few raptors. Hike rating: 2 – moderate Elevation change: minor Meet: Access point to Shollenberger Park behind the Point Blue parking lot. Leader: Sandy Ritchie (925) 381-2514 Directions: […]

Feb 18

MDAS Field Trip — Bodega Bay

FEBRUARY 18 @ 9:30 AM - 3:00 PM

Bodega Bay Saturday, February 18, 9:30-3:00 Both sites are good for wintering waders, shorebirds, waterfowl and a few raptors. Hike rating: 1-Easy Elevation change: N/A Meet: Porto Bodega Marina, https://goo.gl/maps/SxWebctFy9ZDyUqP6 Leader: Maureen Lahiff, , 510-484-6529 Directions: Take US 101 north to Petaluma. Exit at Washington and head SW. Washington becomes Bodega Ave, which becomes Petaluma-Valley Ford Rd, […]