The Nature Center is part of a 100-acre nature preserve with riparian and oak woodlands, shrub lands, meadows, and aquatic habitats.
Hours, Prices & Directions
The trails are open daily from dawn to dusk. The Nature Center Building with exhibits, information, live animals and the book and gift store is open:
February through October
Open Tuesday through Sunday: from 9 a.m. to 5 p.m.
November through January
Open Tuesday through Sunday: from 9 a.m. to 4 p.m.
Closed on Mondays
But open on Mondays that are public holidays, except Christmas Day and New Year’s Day.
Hours of operation could change, especially in stormy weather. Call to confirm hours of operation for the day (916) 876-4918.
Come See the Visitor Center

Explore the Nature Preserve
Watchable Wildlife
The Nature Area is included as a “Watchable Wildlife” site in the California state guide because of its reliable wildlife viewing opportunities. There is always something interesting to see so bring your binoculars and view the wildlife up close!
Many varieties of animal species live in or use the nature preserve and the Ancil Hoffman Park. See deer, squirrels, coyotes, wild turkeys, rabbits, snakes, hawks, owls, woodpeckers, songbirds and waterfowl on the river and ponds, as well as tracks or signs of many other animals.
Nature Blog
Ask a Naturalist: Is it normal for a deer to have blood on its antlers?
LearnIt depends! If you ever seen a deer like in the photo below during the fall season then yes it is very normal! The deer that call the Effie Yeaw Nature Study Area home are Black-tailed deer. Unlike species like Reindeer only the male Black-tailed deer grow...
Ask a Naturalist: Are Steelhead trout and Rainbow trout the same species?
LearnSteelhead trout and Rainbow trout live different lifestyles but they are the same species. Steelhead trout are anadromous meaning they start their life in freshwater go to the ocean where they spend most of their life and then return to freshwater to spawn....
Ask a Naturalist: How do flowers get their color?
LearnFlowers are well known for their brilliant vibrant beauty. They provide a pleasing appearance and are a popular gift as a way to show someone you care. Flowers come in all different shapes and sizes providing nectar and pollen to our pollinating friends. Though...