City Nature Challenge

Discovering local flora and fauna during the City Nature Challenge.
City Nature Challenge: Bioblitz at Lands End
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Join us for the City Nature Challenge at Lands End! 

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The well at El Polin Spring
Membership Event: City Nature Challenge Bioblitz at El Polin Spring
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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!

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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.
Get Ready for City Nature Challenge! (Webinar)
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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.

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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.
City Nature Challenge: Bugs & Blossoms Bioblitz
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Join us at Ring Mountain Open Space Preserve for a naturalist adventure and celebration of biodiversity!

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Discovering local flora at Rancho.
Nature Day: Discover & Explore at Rancho Corral de Tierra
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Come out for an afternoon of discovery and exploration of the natural world at Rancho Corral de Tierra! 

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