Make a Donation

Your donation to Mt. Diablo Audubon Society is an investment in the future of native birds, wildlife, and the environment of Contra Costa County. Donations are tax-deductible, as allowed by law. Mt. Diablo Audubon Society’s Federal Tax ID (EIN) is 23-7089801. MDAS does not share information about our donors with any other group or organization.

Donation Levels:

    • $5 – $24 California Towhee
    • $25 – $99 California Quail
    • $100 – $249 California Thrasher
    • $250 – $999 California Gnatcatcher
    • $1000 – Up California Condor

Donate Online

Online payments are processed using PayPal because it is secure and widely trusted. You do not need to have a PayPal account if you use a major credit card.

Donate by Check

Make your tax-deductable check payable to MDAS and mail to:

Steve Buffi
1564 Pyrenees Place
Walnut Creek, CA 94598

Mt. Diablo Audubon Society Donation Forms to download and print.

Other Ways to Support MDAS

Register at Wild Birds Unlimited in Pleasant Hill, and owner Michael Eliot will donate 5 percent of your purchases to MDAS. You may also go to and designate “MT Diablo Audubon Society” as your charity of choice to direct .05 percent of eligible purchases to our group.

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 […]