City Nature Challenge - St. Louis

Join with others in the St. Louis Region by participating in the City Nature Challenge. Upcoming: April 26-29, 2019.

Calling all nature enthusiasts, citizen scientists and ecology esperts:

Please join the City and others in the St. Louis Metro Region for the 2019 City Nature Challenge: April 26-May 5, 2019. We need your participation! 

The St. Louis Region had a very strong showing in the STL City Nature Challenge 2018, which involved 65 cities around the world -- each striving to observe as many species of wild plants, birds and animals as possible during the City Nature Challenge period. The 2019 City Nature Challenge will include more than 160 cities around the world.

The City of St. Louis uses the City Nature Challenge as an opportunity to help build the City’s Urban Biodiversity Inventory through citizen science observations with the free iNaturalist app. New iNaturalist features will be added to make this effort even more useful during the 2019 City Nature Challenge.

The St. Louis Region's official City Nature Challenge site is:

iNaturalist Application

To learn more about recording species observations with the free iNaturalist app, check out this terrific iNaturalist "how to" resource developed by the Saint Louis Zoo.


  • The City of St. Louis and its partners at the Missouri Botanical Garden, Missouri Department of Conservation and Saint Louis Zoo have developed nature and wildlife Springtime FIELD ID Reference Sheets to help guide and encourage identification of species in 5 habitats. 
  • Additional logistics and many more details are included in a STL City Nature Challenge Participant Guide, developed by the Garden.
  • If you are an educator, the Garden has also developed an excellent Educator Guide to support your classroom citizen science efforts.  

Hosted Events

During the 2018 STL City Nature Challenge, several locations hosted nature-based events. (2018 STL City Nature Challenge events in the City were here).  Scheduled events for the 2019 STL City Nature Challenge will be posted here, but everyone is encouraged to participate on their own during the City Nature Challenge species observation period: April 26-29 as well as the species identification period: April 26-May 5, 2019.

If you would like to participate on your own using the iNaturalist app, feel free to use the FIELD ID sheets at home, work or in places like City Parks.

If you are interested in looking for surrogate species which indicate high quality urban biodiversity, please contact Catherine Werner at for the list of species and recommended sites (here is a map of urban biodiversity monitoring locations in the City of St. Louis).


Events being hosted for the 2019 STL City Nature Challenge will be listed here. Please check back for details. 



Past Events Materials

STL City Nature Challenge (2018 Save the Date)
City Nature Challenge Field ID Guides
STL City Nature Challenge 2018 - Special Events
STL City Nature Challenge 2018 Guided / Self-Guided Experiences
STL City Nature Challenge - Educator Guide
STL City Nature Challenge Flyer 2019

Was this page helpful?      

Comments are helpful!
500 character limit

Feedback is anonymous.