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City Nature Challenge

The well at El Polin Spring
Events

Membership Event: City Nature Challenge Bioblitz at El Polin Spring

El Polin Spring
Explore El Polin Spring in the Presidio with us for a naturalist adventure and celebration of biodiversity! A bioblitz is a quick, intense survey of the species present. Hone your observation skills, become a field biologist for the day, and enjoy some nature in the city and friends!
A volunteer with dark pants kneels at the left of the screen to take a picture with a phone of light pink flowers against a rocky background.
Events

Get Ready for City Nature Challenge! (Webinar)

Online/Virtual
Get ready for City Nature Challenge by joining this introductory webinar, including how to use the iNaturalist app and website for basic and more advanced tasks.
A volunteer with dark pants kneels at the left of the screen to take a picture with a phone of light pink flowers against a rocky background.
Events

City Nature Challenge: Bugs & Blossoms Bioblitz

Join us at Ring Mountain Open Space Preserve for a naturalist adventure and celebration of biodiversity!
Discovering local flora at Rancho.
Events

Nature Day: Discover & Explore at Rancho Corral de Tierra

Le Conte Trailhead
Come out for an afternoon of discovery and exploration of the natural world at Rancho Corral de Tierra!