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  • MDAS Field Trip — Lake Lagunitas

    Lake Lagunitas WCX2+JX, Fairfax, CA, United States

    Lake Lagunitas Wednesday, March 23,  9 AM-1 PM Leader: Hugh Harvey, 925-935-2979 Spring is approaching and we will enjoy birds and flowers on the north slope of Mount Tamalpais.  The […]

    $8

  • MDAS Field Trip — Tomales Bay State Park

    Heart's Desire Beach Hearts Desire Beach, Inverness, CA, United States

    Tomales Bay State Park Saturday, March 26, 8:30 AM-1 PM Leader: Linda Shinn, 925-597-0234 A popular site for birding along Tomales Bay, including a hike from Heart's Desire Beach to […]

    $8

  • MDAS Field Trip — Orinda Connector Trail

    Orinda Connector trail VQXQ+XR, Orinda, CA, United States

    Orinda Connector Trail Wednesday, March 30, 8 AM-11 AM Leader: Don Lewis, 925-284-2906 Meet: Trail head at Camino Pablo and Bear Creek Road A walk through an EBMUD property requires […]

  • MDAS Field Trip — North Briones

    Briones Regional Park (North) XV37+VX, Martinez, CA, United States

    North Briones Tuesday April 5, 8:30 - Noon Leader: Cheryl Abel, 925-957-6229 This walk begins in oak woodlands with lots of spring wildflowers and birds. We then continue through grasslands […]

    Free

  • Monthly Program: April 2022

    Zoom CA, United States

    Main Program: Cooperation and conflict in the communal world of the Acorn Woodpecker Walt Koenig Acorn Woodpecker, best known for their unique habit of storing acorns by the thousands in […]

  • MDAS Field Trip — Black Diamond Mines

    Black Diamond Mines Regional Preserve X45P+PP, Antioch, CA, United States

    Black Diamond Mines Tuesday, April 12, 8 AM to 1 PM Leader: Hugh Harvey, 925-935-2979 A serious walk up through the Canyon Wren habitat.  Other woodland and grassland birds are […]

  • MDAS Field Trip — Pine Canyon

    Diablo Foothills Regional Park Trailhead Parking 1700 Castle Rock Rd, Walnut Creek

    Pine Canyon Tuesday, April 19, 8 AM to 1 PM Leader Tracy Farrington, 925-788-6223 Pine Canyon, which includes the Castle Rock EBRPD recreational area, and the Diablo Foothills Regional Park […]

  • MDAS Field Trip — Del Puerto Canyon

    Del Puerto Canyon Rd & Diablo Grande Pkwy Del Puerto Canyon Rd, Patterson, CA, United States

    Del Puerto Canyon Monday, April 25, 9 AM to 4 PM Leader: Beth Branthaver, 510-502-4869 This is an all day trip requiring an early start to meet at the lower […]

  • MDAS Field Trip — Mitchell Canyon

    Mitchell Canyon 96 Mitchell Canyon Road, Clayton, CA, United States

    Mitchell Canyon Thursday, April 28, 8 AM to 1 PM Leader: Sandy Ritchie, 925-685-8048 We will walk into Mitchell Canyon on the lower slopes of Mount Diablo State Park.  Many […]

    $6

  • MDAS Field Trip — East Contra Costa County

    Marsh Creek Regional Trail Trailhead X8R3+9H, Oakley, CA, United States

    East Contra Costa County Saturday, April 30, 7 AM to 1 PM Leader: Randy Huey, 925-518-8439 This is a trip which often can be very hot by the finish. We […]

  • MDAS/SMD Field Trip—Curry Canyon

    Curry Canyon Ranch

    Mount Diablo Audubon Society and Save Mount Diablo are partnering up for a hike on Save Mount Diablo's gorgeous Curry Canyon Ranch. This portion of Curry Canyon Ranch showcases beautiful […]

    Free

  • Monthly Program: May 2022

    Zoom CA, United States

    Main Program: Soundscapes to Landscapes Dr. Leo Salas and David Leland The earth’s biodiversity and associated ecosystem services are in a severe state of decline due to human pressure, however, […]

  • MDAS Field Trip — West Briones Regional Park

    Bear Creek Staging Area Briones Bear Creek Staging Area, 16 Bear Creek Rd, Lafayette, CA, United States

    West Briones Regional Park Monday, May 9, 8 AM to 1 PM Leader: Mike Marchiano, 925-372-6328 A visit to the west entrance of Briones Regional Park in the spring offers […]

  • Monthly Program: June 2022

    The Camellia Room at The Gardens at Heather Farm 1540 Marchbanks Drive, Walnut Creek, CA, United States

    Birding Information: Local Birds from MDAS Photo Contests Krista Vossekuil, MDAS Education Chair Krista Vossekuil will share some of the photos from the MDAS Photo Contests! Check out all the amazing […]

  • MDAS Field Trip — Outer Point Reyes

    Bear Valley Visitor Center 25RX+CV, Inverness, CA, United States

    Outer Point Reyes Saturday, June 4, 8:30 AM to 3 PM Leaders:  Hugh Harvey and Beth Branthaver This is a trip to see some spring birds, and visit some of […]

  • MDAS Field Trip — Yuba Pass (2-day outing)

    Yuba Pass Yuba Pass, Yuba Pass Road, Calpine, CA, United States

    Yuba Pass Saturday-Sunday, June 11-12, 7 AM Saturday to 1 PM Sunday Leaders: Hugh and Rosita Harvey This is always a productive and well-favored weekend trip to the northern Sierra […]

  • 13th Annual Martinez Beaver Festival

    Susana Park Estudillo St. & Susana St., Martinez, CA

    Come show your support for urban beavers and visit the Mt. Diablo Audubon Society booth and other favorite nature organizations at the 13th annual Martinez Beaver Festival.

  • MDAS Field Trip — Bodega Bay

    Tides Restaurant Bodega Bay 835Bay Highway, Bodega Bay, CA, United States

    Bodega Bay Saturday, August 20, 9 AM to 3 PM Leader:  Hugh Harvey, 925-935-2979 The last trip of our field trip calendar, but sometimes considered the first trip for fall […]

  • MDAS Field Trip — Jewel Lake

    Jewel Lake, Tilden Nature Area, California 600 Canon Dr, Berkeley, CA 94708, Berkeley, CA, United States

    Jewel Lake, Tilden Nature Area, Berkeley Thursday September 1, 7:30am - 11:30am A short walk along Wildcat Creek and around Jewel Lake in Tilden Park. Possible highlights include fall warblers, […]

    Free

  • Monthly Program: September 2022

    Lakeside Room of the Heather Farm Community Center at Heather Farm 301 N. San Carlos Drive, Walnut Creek, CA, United States

    Birding Information: Eagle Scout Nest Box Projects Georgette Howington, Nest box monitor for the California Bluebird Recovery Program Georgette Howington will introduce several Eagle Scouts who completed Nest Box and […]