Learn about fern ecology and terminology, and practice keying out some of the ferns at Oaktown Native Plant Nursery. Beginners are welcome!

On Saturday, April 28th, Join CCNH Naturalist and iNaturalist Outreach and Community Coordinator Tony Iwane for a hike into Mitchell Canyon on Mt. Diablo one of the Bay Area's true biodiversity hotspots. We'll be on the lookout for some organisms that are unique to Mt. Diablo, like the Mt. Diablo Fairy-Lantern...

Join our friends at WhollyH20 a fun half day citizen science BioBlitz Wildcat Creek Trail around Davis Park in San Pablo, CA. Get ready to enjoy being a citizen scientist through simple observation and photo documentation.

Join our friends at WhollyH20 for a fun half day citizen science BioBlitz on the Lower and Upper Packrat Trail along Wildcat Creek in Tilden Park in Kensington, CA. We'll be hiking around Jewel Lake. Get ready to enjoy being a citizen scientist through simple observation and photo documentation.

Come join us for a winter plant walk is a great time to learn evergreen trees and shrubs. Joaquin Miller Park offers a great diversity of species ranging from widespread foundational species to those less common on the landscape.

Join our friends at WhollyH20 for a full moon citizen science Oyster BioBlitz at Pt. Pinole Regional Park in Richmond. We'll be measuring and counting oysters during the full moon low tide, together with The Watershed Project.

This event is part of a project to BioBlitz the Wildcat Creek watershed from its headwaters at Lake Anza down to its end point at the Wildcat Marsh and Landfill Loop in Richmond from summer 2017 to Spring 2018. Check out the other upcoming BioBlitzes in this project.

Join our friends at the Coyote Meadows Coalition for the upcoming BioBlitz at Coyote Meadows, San Jose, on November 5th, 9-11am. Join a free nature walk with an expert, and help us document the diversity in this area!

This event is part of a project by WhollyH20 to BioBlitz the Wildcat Creek watershed from its headwaters at Lake Anza down to its end point at the Wildcat Marsh and Landfill Loop in Richmond from summer 2017 to Spring 2018.  Check out the other upcoming BioBlitzes in the project! 

Free reception for CCNH Naturalist Tony Iwane's wildlife photos!

Sean Kriletich, a long time resident of the “Moke” River watershed will provide a resident’s view on current watershed issues, their proportional impact on water quantity, quality, and discuss solutions...

Hike to the ridge of San Bruno Mountain for a restoration event with amazing views of the Bay Area! Help plant native host and nectar plants for the endangered Mission Blue and Callippe Silverspot butterflies.

Come explore the rolling hills of Fernandez Ranch in north Contra Costa County. We’ll look for chanterelles, boletes, and a variety of visually stunning fungi. Damon Tighe, a local amateur mycologist will help find and identify what’s popping and discuss the role of fungi in the ecosystem.

The rains are here, and the forest is oozing with slime molds! Join naturalist and slime enthusiast Angela Pai on a hunt for myxomycetes, the plasmodial slime molds.

Turn Black Friday into Green Friday!

Forget the hassle of shopping and spend a fun and relaxing two hours watching the migrating birds of San Francisco Bay! Meet us at Oakland's beautiful Middle Harbor Shoreline Park for a walk along the shore and learn the basics of birdwatching, bird identification, and the amazing adaptations of these avians in an easy-going setting.

This bird-watching event is geared towards anyone who wants to get started with birding. The walk is fully ADA accessible and appropriate for people with mobility limitations.

Join naturalists from the California Center for Natural History on a creepy-crawly night hike at Joaquin Miller Park in the Oakland hills. We’ll find spiders, moths, and night-dwelling creatures that glow under UV light.  Bring your headlamp, drinking water, warm layers, and sturdy hiking shoes. Please no pets on this walk!

How much do you know about moths - the hyperdiverse (mostly) nocturnal cousins of butterflies? In celebration of National Moth Week, we’ll be hosting a Moth Ball at Quail Hollow Park in Santa Cruz to draw attention to the beauty, diversity, and ecological importance of moths. 

Explore and help restore the ancient sand dunes of San Bruno Mountain on 7/23 at 10am. Limited to 20 spaces.

Free insect photography workshop at Lake Merritt with professional photographer

Mt. Diablo’s Mitchell Canyon is one of the great nature walks in the Bay Area. Butterflies patrol the creek, delicate flowers such as Elegant Clarkia adorn the trailsides, and reptiles scamper about. We’ll hike up the easy canyon trail, have some lunch and return, observing and learning about the plants and animals of this special place.

With spring in full swing, the hills of Oakland are alive with blooming flowers, busy pollinators and more. Join Naturalists Angela Pai and Tony Iwane for a fun and easy walk through Knowland Park and learn about the intricate dance between plants, pollinators and other invertebrates.

Tardigrades, Diatoms and Nematodes oh my! Use microscopes and cell phone lenses to explore the wonderments of the microscopic world at PLACE for Sustainable Living in Oakland.

Join us for an intro to iNaturalist, an online platform that will help you identify & learn about nearly any organism you come across!

What’s that plant? Join us for a beginners’ plant hike in Joaquin Miller Park.

Join us to learn about studying bird populations. As winter birds migrate through Oakland, bird censuses & point counts are ways to gather information about the overall health of populations and predict changes over time.

Join the California Center for Natural History for a screening of Microcosmos, an up-close documentary about the lives of invertebrates: snail sex! dung beetle drama! a spider building an underwater bubble fortress!

Bring your friends and come meet other nature nerds. Naturalists will be present to answer your bug-related questions.

This is a free event, though donations are accepted and appreciated.

Join us for a waterfowl walk at Lake Merritt. Come learn about the diversity of ducks at this urban wildlife refuge!

Learn about the beautiful birds who call Lake Merritt home on a free bird walk this Sunday!