Join Us or Renew Your Membership

Mt. Diablo Audubon Society (a chapter of The National Audubon Society) is a private 501(c)(3) non-profit organization dedicated to protecting the well-being of our community’s people, birds, wildlife, and habitat through conservation, education and advocacy.

We are an independent chapter with our own membership, budget and programs. Membership dues support our conservation and community science efforts.

Our Equity, Diversity, Inclusion, and Belonging Committee creates and promotes an environment that is inclusive, supportive, accessible, and welcoming to all.

Membership Benefits

  • Monthly programs featuring engaging speakers with expertise in avian and environmental issues.
  • Field trips for birders of all skill levels.
  • A subscription to our monthly online newsletter, The Quail, which contains beautiful photographs, info on monthly programs, events and field trips, and links to birding and environmental information.
  • Opportunity to participate in our two Contra Costa County Christmas Bird Counts.
  • Join our Volunteer opportunities for a variety of conservation and community science projects, and public outreach events sponsored by our chapter or in cooperation with other organizations.
Available Membership Options:

New Annual Membership

$25 New MDAS Membership.
$45 New MDAS Membership ($25) plus New National Audubon Society Membership ($20). You will receive the quarterly Audubon magazine.

Renewing Annual Membership

$25 Renewal for existing MDAS Members. National Audubon Society (NAS) will contact you about
renewing NAS membership.

Lifetime Membership

$250 Lifetime MDAS Membership – To be paid in two installments of $250 each.
$500 Lifetime MDAS Membership – Paid in Full.

By Mail:   Print the Membership Application Form. Please make your check payable to MDAS.  Mail to:  Mt. Diablo Audubon Society, Attn: Membership Chair, PO Box 21625, Concord, CA 94521.

MDAS Chapter Links

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 […]