Welcome Mount Diablo Bird Alliance!

It’s Official! Members have voted decisively to change our name from Mt. Diablo Audubon Society to Mount Diablo Bird Alliance! We believe our mission to connect people and birds through our activities, projects and events is being made stronger by this change. We will remain affiliated with National Audubon Society, and hope that in time we can all come together in celebrating and protecting of birds in a non-eponymous fashion.

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.

Welcome Mount Diablo Bird Alliance!

It’s Official! Members have voted decisively to change our name from Mt. Diablo Audubon Society to Mount Diablo Bird Alliance! We believe our mission to connect people and birds through our activities, projects and events is being made stronger by this change. We will remain affiliated with National Audubon Society, and hope that in time we can all come together in celebrating and protecting of birds in a non-eponymous fashion.

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.

Welcome Mount Diablo Bird Alliance!

Mt. Diablo Audubon Society is now Mount Diablo Bird Alliance!

Connecting People with Birds

The Mount Diablo Bird Alliance 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.

Mount Diablo Bird Alliance 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.

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.

Mount Diablo Bird Alliance on Facebook