California Biodiversity Day 2025

Celebrating California's Incredible Biodiversity September 6–14

California Biodiversity Day (September 7) kicks off a full week celebrating our state’s role as a global biodiversity hotspot on Saturday, September 6. In-person and virtual events across California are hosted by state and federal agencies, tribes, local communities, NGOs, museums, zoos, and universities, all working to connect people with the incredible diversity of life here in California.

Audubon California and Audubon community chapters are joining the celebration with bird walks, BioBlitz activities, and more. To explore all events near you, visit the California Biodiversity Day events page.

Events across California hosted by Audubon California staff, partners, and community chapters:

Saturday, September 6 | 9 a.m. -12 p.m.
Biodiversity Day and BioBlitz at Camp Pollock (Sacramento)

Our Audubon Conservation Ranching and Working Lands teams will be joining Sacramento Valley Conservancy on the ground for tabling and helping lead a bioblitz group. Participate in a fun day of searching and learning as we get to know our plant and animal neighbors, and connect with local conservation organizations.

Learn more
Sunday, September 7 | 8-11 a.m.
Community Bird Walk at the Audubon Center at Debs Park Debs Park (Los Angeles)

Join us for an introductory bird hike to learn the basics of birding and explore how the Center is creating bird-friendly communities. All ages and birding knowledge levels are welcome. No admission fee. 
| ¿Interesado en aprender más sobre las aves locales del parque Debs? Únase a nosotros en una caminata introductoria sobre aves para aprender los conceptos básicos de la observación de aves. ¡Sí, observar aves es un verbo! Venga a aprender cómo el Audubon Center at Debs Park está creando comunidades más amigables con las aves y conozca a nuestros vecinos emplumados locales. Todas las edades y niveles de conocimiento sobre observación de aves son bienvenidos. Sin tarifa de admisión.

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Sunday, September 7 | 8-10 a.m.
Morning Wildlife Walk & Talk with Santiago Canyon College Audubon Student Chapter (Santa Ana)

Join the Santiago Canyon College Audubon Student Chapter at Peter’s Canyon Regional Park south entrance. Parking is free but limited street parking so please make sure to arrive early or carpool. The trail will be flat 2 miles with some shade and slight downhill with narrow trails. Be sure to bring, sunscreen, snacks, water, and expect warm weather. 

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Sunday, September 7 | 8-11 a.m.
Bird Walk at the Nimbus Fish Hatchery with Sacramento Audubon Society and CDFW (Sacramento)

Join the California Department of Fish & Wildlife (CDFW) and Sacramento Audubon Society for a family-friendly bird walk along the American River scenic trail. Expect easy walking with frequent stops to scan the river, riparian habitat, and surrounding bluffs for local resident birds. Participants should be prepared with comfortable shoes, sun protection, and water. Extra binoculars will be available if you don't have your own.

Learn more
Sunday, September 7 | 8-11 a.m.
Sepulveda Basin Birdwalk with San Fernando Valley Audubon Society (Van Nuys)

Join the fun and go birding for with San Fernando Valley Audubon Society! The Sepulveda Basin is a  2,100+ acre flood control basin, with the Los Angeles River and several tributaries coursing through it. 

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Tuesday, September 10 | 12-1 p.m.
CNRA Discussion featuring Chelsea Abrahami from the Audubon Center at Debs Park (Virtual)

California is one of 36 biodiversity hotspots in the world, with exceptional richness of life across our varied lands and waters. Join us virtually for a California Natural Resources Agency discussion moderated by Secretary Wade Crawfoot, in celebration of California Biodiversity Week as we geek out with experts on some particularly colorful forms of life that call our state home. There’s never been a more important time to get inspired and energized to protect our natural world!

Learn more and register
Tuesday, September 12 | 8-10 a.m.
Feathered Focus: Birding in Stillness at the Salton Sea

Join Audubon California’s Lindsay Rowe and California State Parks for a peaceful morning of quiet observation and connection with nature. Feathered Focus invites you to slow down, sit in stillness, and tune in to the sights and sounds of local birdlife. Whether you're a seasoned birder or simply curious, this gentle experience offers a chance to deepen your awareness and appreciation of the natural world—one feathered visitor at a time. Binoculars and field guides will be available. No RSVP needed but please note there is an entrance fee to Salton Sea State Recreation Area. 

Explore event details
Tuesday, September 11 | 10-11 a.m.
Guided Bird Walk at Richardson Bay Audubon Center and Sanctuary

Celebrate California Biodiversity Week with a guided bird walk with our sanctuary team along the shores of Richardson Bay Audubon Center & Sanctuary.

RSVP here
Sunday, September 14 | 9 a.m. -12 p.m.
Beginning Birding at Asilomar State Beach & Conference Grounds with Monterey Audubon Society (Pacific Grove)

Everyone is welcome on this trip, but beginners are especially encouraged! Learn birding basics such as equipment options, bird ID strategies, and the free resources available to help you learn more. 

RSVP here