City Nature Challenge participation is easy:
- Download the FREE iNaturalist app. Find instructions for downloading the app on the iNaturalist website or go directly to the app store.
- Take photos of plants, animals, insects, and other life forms. You can do this anywhere across the bi-state* region.
- Upload your images on the greater St. Louis region's iNaturalist page.
Check back for links and more specific directions. City Nature Challenge 2026 will be April 24–27!