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City Nature Challenge 2020 @ The Presidio

Saturday, Apr 25, 10:00 AM - 01:00 PM At Mountain Lake Offered by:

 Presidio Trust

Adventure awaits! Join us for City Nature Challenge 2020 @ the Presidio, part of an annual worldwide competition where city dwellers make observations of “nature where they live.”

Bring the family, friends, and your phones with the free iNaturalist App, and team up with experienced naturalists to record wild plants and animals. An adventure map will be your guide to new experiences, surprises, and the wonder to be found in the Presidio as you explore the areas around Mountain Lake. This is a hands-on day for all ages and activities are free and open to all!

Program Timeline
Join us for the entirety of the morning or jump in for any part of this rich learning morning:

  • 10:00 am – Arrival and downloading of the free iNaturalist app
  • 10:30 am – Welcome and activities kick-off
  • 12:00 pm – Uploading photos to iNaturalist app
  • 12:30 pm – Closing circle


  • Freshwater Frenzy Deep look at macroinvertebrates
  • Plantastic Plants as habitat
  • Raccoon Round-up – Check out Explorer Backpacks and set out into the park
  • iNaturalist Learning Zone – Learn how to become a citizen scientist by recording observations on the iNaturalist app!
  • Spy Cove Scoping birds and turtles
  • Meet California snakes at Tree Frog Treks Native Species Learning Annex!

What to Bring

  • Pack a water bottle + lunch
  • Bring your phone with the iNaturalist App (free) downloaded to take photos + join the community
  • Your sense of adventure!

About City Nature Challenge
City Nature Challenge happens in 260 cities across the country and in places around the world during the annual event period of Friday, April 24 through Monday, April 27, 2020. Learn more about this event and citizen science through the California Academy of Sciences’ City Nature Challenge page.

About Mountain Lake Park
After nearly 20 years of restoration, Mountain Lake is enjoying an exciting new chapter of life. With the partnership of the San Francisco Zoo and local universities and partners, many lost creatures that once lived here have returned to the lake’s community, including Western Pond Turtles, Pacific Chorus Frogs, and more. Come explore this wonderful part of the Presidio for yourself!