Join Marin County Parks and One Tam at Gary Giacomini Preserve as we try to identify and document every living species we see! 

oin California State Parks, the National Park Service, One Tam, and the California Native Plant Society on Mt. Tam as we try to identify and document every living species we see! 

Join the National Park Service and One Tam at scenic Slide Ranch, where Mt. Tam meets the sea, as we try to identify and document every living species we see!

For the Pacifica City Nature Challenge ride, we will meet at Ross Leonard's House on Sunday April 28, 2018.

This project is to make all observations at the Coyote Meadows site, home to a proposed park, using the iNaturalist and eBird tools.

Join us for a day of discovery at Lands End, as we search for wildlife together!

From April 27th-30th, 60 cities around the world will have a friendly competition to see whose citizens can document their biodiversity best using iNaturalist - it's the 2018 City Nature Challenge, and we want to put the Bay Area on top!

Bernal Library in partnership with California Academy of Sciences (CAS) and SF Rec & Park is hosting a Bioblitz at the top of Bernal Hill.

For the Tamarancho City Nature Challenge ride, we will meet in the north parking lot of the Fairfax Market at 10:00AM Saturday April 28, 2018. 

For the Skegg's City Nature Challenge ride, we will meet in the "Skegg's" parking lot on Skyline blvd at 10:00AM Sunday April 29, 2018.

Use your smartphone to monitor nature's recovery after the October 2017 Nuns Fire, which burned approximately 60% of Trione-Annadel State Park. Using the iNatrualist app, we will photograph as many living things as we can find in an area that burned. Please be prepared for a moderate hike of up to 4 miles for this event.

For the China Camp City Nature Challenge ride, we will meet at the park entrance next to the ticket station at 10:00AM Saturday April 28, 2018.

Lake Merritt in the heart of Oakland is the jewel of the city and teeming with life. During this event come learn about the thousands of organisms that call this place home and help document them as part of the City Nature Challenge.

From April 27 - 30, over 60 cities around the world are competing to see who can document the most diversity in the natural world using the iNaturalist app. 

As a part of the City Nature Challenge 2018, the California Lichen Society (CALS) will lead a short hike on Sat, April 28, 2018, on the Old Page Mill Trail in the Russian Ridge Open Space Preserve (San Mateo county).

Join Marin County Parks and One Tam at Ring Mountain Preserve as we try to identify and document every living species we see!

Join us for our sixth annual San Mateo County Parks BioBlitz! We will spread out at San Bruno Mountain to discover species of birds, plants, mammals, fish, invertebrates, reptiles, and more that the park has to offer!

Which city has the most nature? More than 75 cities on six continents are participating to document species they find. Help the Bay Area win this year!

The Presidio Nature Challenge is a BioBlitz, or a chance to see and record the many wild plants and animals that thrive in the Presidio.

In partnership with the San Francisco Public Library and Bay Nature, come explore the Noe Valley neighborhood and look for nature great and small as part of the 2018 international City Nature Challenge.

Bioblitzes are gatherings of scientists, citizen scientists, land managers, and more, all working together to find and identify as many different species as possible.