• Angwin Christmas Bird Count – Thursday, January 1st, 2026 – Join a Team

    Start the New Year off with a blast by participating in the Angwin CBC! Birding opportunities are available throughout the count circle including the Napa Valley, Pope Valley, Lakes Berryessa, Hennessey, and Angwin. We have an excellent crew of experienced area leaders so everyone is encouraged to take part. The count is an important measure of […]

    Free
  • NSAS Speaker Series Presents: “Birding from Here to There” with Harry Fuller Thursday, January 8, 2026 at 7:00 p.m.

    Napa Valley Lutheran Church 1796 Elm St., Napa, CA 94558

    About the Presentation: We will explore what San Francisco’a natural history was like BEFORE the missions and the Gold Rush. Which bird species became known to science because they were found in the Bay Area? Then we will digitally explore the best birding spots along I-5 heading north. Where is there a Lewis’s Woodpecker community […]

    Free
  • Beginners Bird Walk – January 11

    American Canyon Wetlands 2 Eucalyptus Drive, American Canyon

    Start the new year off with a pleasant walk along the American Canyon Wetlands Preserve on Sunday, January 11 starting at 9:00 AM.  What you’ll see are ducks, shorebirds, sparrows and warblers that have completed their nesting season and returned south to over winter in our area.  Along with the visitors there are also a […]

  • NSAS Field Trip to Consumnes River Preserve Saturday, January 17th with Bruce Thomsen & Mark Stephenson

    Consumnes River Preserve 13501 Franklin Blvd, Galt, CA, United States

    The Cosumnes River Preserve protects one of California’s last remaining undammed rivers and its associated ecosystems: wetlands, riparian oak forest, grasslands, and sloughs. It is home to more than 250 species of birds, over 40 fish species and more than 230 plant species. We will walk nature trails observing woodland and riparian birds and boardwalks […]

    Free
  • Beginners’ Bird Walk Sunday, Jan. 25, American Canyon Wetlands, 9:00 AM

    Wetlands Edge Park 2 Eucalyptus Drive, American Canyon, CA, United States

    Recently the weather has been cooperating with sunny days, and our Beginners walk on January 11 was delightful.  We are anticipating that our good fortune will continue with enjoyable birding weather for our next Beginners Bird walk on Sunday, January 25.  So, if you’d like some company as you learn about birding, we’d be delighted […]

  • Winged Migration Expo – Building 69 – January 31st – February 1st

    Winged Migration Expo 1001 Waterfront Ave, Vallejo, CA, United States

    Stay tuned for many events, including birding field trips, expert speakers, educational tabling, interactive kids activities, food and drink vendors, area hikes, and historic ship viewing are scheduled for this year’s Winged Migration Expo. Activities will be held at Building 69, Mare Island, Waterfront Avenue between Kansas and 4th Street, parallel to Nimitz Ave. Many […]

    Free
  • The Ins and Outs of Vaux’s Swifts with Michael Heim on Thursday, February 12th at 7:00 p.m.

    Benicia Public Library 150 East L Street, Benicia, CA

    The Ins and Outs of Vaux’s Swifts with Michael Heim on February 12th at the Benicia Public Library at 7:00 p.m. About the Program: Have you ever wondered where large flocks of migratory birds find places to roost during travel? During their flight from northern breeding grounds to Central America, Vaux’s swifts convert chimneys at […]

    Free
  • NSAS Field Trip to Las Gallinas WTP and Hamilton Wetlands – Sunday, February 22nd 8:00 a.m.

    Las Gallinas Valley Sanitary District 300 Smith Ranch Rd., San Rafael, CA, United States

    Date: Sunday, February 22, 2026 Time: 8:00 am - ~3:30 PM Leader: Mark Stephenson The Las Gallinas are the birding community nickname for the treatment ponds and surrounding agricultural fields and tidal marsh at LGVSD’s Wastewater Treatment Reclamation Project. The area includes two wastewater treatment ponds, a freshwater pond with islands for nesting habitat, and several miles of […]

    Free
  • Beginners’ Bird Walk – Wetlands Edge Park – Sunday, March 8th at 9:00 a.m.

    Wetlands Edge Park 2 Eucalyptus Drive, American Canyon, CA, United States

    NSAS Beginners Bird Walk on Sunday, March 8th at 9:00 a.m. Recently the weather has been cooperating with sunny days, and our Beginners walks have been excellent outings. We’d be delighted to have you join us for our next Beginners' Bird Walk on Sunday, March 8th, at the American Canyon Wetlands Edge Park.  No reservations […]

    FREE
  • Galápagos Birds and the Study of Evolution with Dr Jaime Chaves 3-12-26

    Napa Valley Lutheran Church 1796 Elm St., Napa, CA 94558

    Greetings AlI NSAS Members, Family & Friends: You don’t want to miss next Thursday’s presentation by Dr. Jaime Chaves entitled, Birds and the Study of Evolution! Dr. Chavez is an Associate Professor of Evolutionary Biology from San Francisco State. Please Come Join us next Thursday for our March Speaker Series Date: Thursday, March 12, 2026 […]

    Free
  • NSAS Beginners Bird Walk on Sunday, March 22nd at 9:00 a.m.

    American Canyon Wetlands 2 Eucalyptus Drive, American Canyon

    NSAS Beginners Bird Walk on Sunday, March 22nd, at 9:00 a.m. Recently the weather has been cooperating with sunny days, and our Beginners walks have been excellent outings. We’d be delighted to have you join us for our next Beginners’ Bird Walk on Sunday, March 22nd, at the American Canyon Wetlands Edge Park.  No reservations […]

  • March’s Field Trip to Mines Road and Del Puerto Canyon: Saturday, March 28th 8:00 a.m.- 4:00 p.m. with Robin Leong & Wendy Cole

    Mines Road, Livermore CA Mines Road at Tesla Road, Livermore, CA, United States

    Mine’s Road stretches 35 miles from Livermore to San Jose! We meet at the junction of Tesla and Mines Roads at 8 a.m. with a full tank of gas, money for entrance fees, lunch and plenty of liquids. The majority of this trip is not a hiking trip, but a true road trip. Participants should […]

    Free