City Nature Challenge Events
Get outside and photograph nature! Go out on your own or with others. You can even join our partners at the events listed below. Be sure to check back in as we will continue to add new events.
Can’t get outside? No problem. Take part from the comfort of a desktop computer and help identify the plants and animals people observe with their cameras. Find more information on how to identify observations.
We are encouraging everyone to follow recommended protocols related to staying healthy, keeping safe, and staying respectful of wildlife and wild spaces.
Leading up to the challenge
Friday, April 26
Saturday, April 27
- Anza-Borrego: First Annual Desert BioBlitz
- Hike with a Purpose: BioBlitz at the Boulder Creek Preserve
- San Diegutio River Park Bioblitz: Biodiversity Expedition
- 9 AM, Saturday, April 27
- Hosted by San Dieguito River Park and San Dieguito River Valley Conservancy
- Collaborators: San Diego Tracking Team, Southwestern Field Herpetological Association, San Diego Audubon
- City Nature Challenge at Tijuana Slough
- 9–11 AM, Saturday, April 27
- Bilingual English/Spanish & ADA Accessible
- Hosted by Tijuana Slough National Wildlife Refuge, San Diego Audubon, and Fauna del Noroeste
- South Bay BioBlitz at Emory Cove
- 9-11 AM, Saturday, April 27
- Hosted by San Diego Audubon
- South Bay BioBlitz at Sweetwater Bike Path
- 9-11 AM, Saturday, April 27
- Bring your bicycles!
- Hosted by San Diego Audubon
- South Bay BioBlitz at Kendall-Frost Marsh (Mission Bay)
- 9-11 AM, Saturday, April 27
- Bilingual English/Spanish
- Hosted by San Diego Audubon
- Batiquitos Lagoon Foundation Morning BioBlitz
- BioBlitz: City Nature Challenge 2024 at El Monte Ecological Preserve
- 9–11 AM, Saturday, April 27
- Hosted by Earth Discovery Institute
- Nature Hike: Cleveland National Forest
- 9 AM–12 PM, Saturday, April 27
- Hosted by San Diego Natural History Museum's Canyoneers
- City Nature Challenge 2024 at San Pasqual Battlefield State Historic Park
- 9 AM-1 PM, Saturday, April 27
- Hosted by California State Parks
- Community Science: City Nature Challenge at Grand Caribe Shoreline Park
- 9 AM–12 PM, Saturday April 27
- Guided Walk at 9:30 AM hosted by San Diego Audubon
- Guided Walks at 10:30 AM and 11:30 AM hosted by Coronado Public Library
- Garden Tour & BioBlitz at Paradise Hills Native Gardens
- Batiquitos Lagoon Foundation Afternoon BioBlitz
- Self-guided observations:
- Head outside and use the iNaturalist app to make observations of all the wild plants and animals you encounter in San Diego County. Check out the San Diego County City Nature Challenge project to take the challenge! New to the app? Check out our tutorial here.
Sunday, April 28
Monday, April 29
- Self-guided observations–San Diego County
- Head outside and use the iNaturalist app to make observations of all the wild plants and animals you encounter in San Diego County. New to the app? Check out our tutorial here.
Be sure to check this page for updates. We will add events as they are scheduled.
Want to host an event? Contact our community science team.
Want to stay involved past this event? Learn more about The Nat’s ongoing community science projects.
