City Nature Challenge


Calling all citizen scientists, nature enthusiasts and ecologists!

April 26–29, 2019

The greater St. Louis region will be competing in the 2019 City Nature Challenge, along with more than 160 cities around the world. Which city can document the most species in 4 days? Here are two ways to participate:

  1. April 26–29: Get outside! Whether in a backyard, local park or favorite nature spot anywhere in the St. Louis region*, take photos or sounds of animals, plants and other life-forms using the free iNaturalist app. In addition to helping St. Louis compete in this global challenge, your observations will become data that could benefit local lands and waters.
  2. April 30–May 5: If you consider yourself skilled at species ID, we need you! During this window of time, help turn casual observations into research-grade data from the comfort of your own computer.

Learn more
Download a flyer

*Counties representing the greater St. Louis region in the 2019 City Nature Challenge: Missouri—Crawford, Franklin, Jefferson, Lincoln, St. Charles, St. Francois, St. Louis City, St. Louis County, Warren; Illinois—Bond, Calhoun, Clinton, Jersey, Macoupin, Madison, Marion, Monroe, St. Clair.

The City Nature Challenge is organized by Natural History Museum of Los Angeles County and California Academy of Sciences.

Organizing Partners—St. Louis Region: