Field Trip: Mendoza Ranch & Roop Pond (Gilroy)

Sat · Oct 31·8 AM – 10 AM·Lake Cunningham Regional Park · San Jose

Volunteer to weed and mulch invasive plants, restoring habitat with native wildflowers, perennials, shrubs, and trees in Lake Cunningham Regional Park’s Native Garden.

Sat · Oct 31·8:30 AM – 4:30 PM·San Francisco, CA (Farallon Islands)

Eight‑hour naturalist‑led whale watching expedition sails from San Francisco under the Golden Gate Bridge to the Farallon Islands, featuring an expert naturalist, $320 per person, ages 13+.

Sat · Oct 31·8:30 AM – 11 AM

Historic garden cemetery and arboretum spanning 200 acres serves as an eBird hotspot for fall migrants; meet at the large stone gate, 1370 El Camino Real.

Sat · Oct 31·8:30 AM – 11 AM·Cypress Lawn Cemetery, Colma

Historic garden cemetery and arboretum hosts eBird hotspot for observing fall migrants; meet at the large stone gate near the SamTrans stop.

Wed · Oct 28·5 PM – 7 PM·Santa Clara Valley Bird Alliance (SCVBA), 37.313072, -122.063695

Community Crafternoon at McClellan — crafting sessions held at the Santa Clara Valley Bird Alliance.

Thu · Oct 29·8 AM – 11 AM·37.403418, -121.953984

Field Trip: Ulistac in Fall at 37.403418, ‑121.953984.

Sun · Nov 1·8:30 AM – 11 AM·37.234266, -121.899898

Field Trip: Los Capitancillos takes place in San Jose.

Sun · Nov 1·9 AM – 11:30 AM·Hellyer County Park (Cottonwood Lake), 985 Hellyer Avenue, San Jose, CA, 95111

Bioblitz at Hellyer County Park (Cottonwood Lake) — rapid species inventory.