This 11-week course uses the official “California Naturalist Handbook”, expert speakers, field excursions, and project-based learning to explore California’s ecological diversity and the unique habitats of the Cosumnes River watershed. Upon successful completion, you’ll become a Certified California Naturalist and are eligible for four academic credits via UC Davis Extension (additional fee applies).

Dates: April 1-June 10, 2026

Fees: $400, Partial scholarships are available for a limited number of students. Email info@cosumnes.org to request an application

Delivery Mode: In-Person

Contact: Info@cosumnes.org 

Course Website & Registration

Organization Description: The Cosumnes River Preserve consists of over  50,000 acres of wildlife habitat and agricultural lands owned by seven land-owning Partners. The Partners include The Nature Conservancy, Bureau of Land Management, California Department of Fish & Wildlife, Sacramento County Regional Parks, Department of Water Resources, Ducks Unlimited, and the California State Lands Commission. The Preserve is centered along the Cosumnes River, its floodplains and riparian habitat. This habitat is buffered by a variety of agricultural operations. The Preserve provides numerous social, economic, and recreational benefits to local communities and to people residing in the larger Sacramento and San Joaquin areas. The habitat supports wildlife, including birds that migrate throughout the Pacific Flyway.