The City Nature Challenge is a friendly competition among 100+ cities worldwide to see who can observe the most species and involve the most citizen scientists.

Where do I participate?

Explore nature on your own or join others at one of our events.

How do I participate?

1. Observe! (April 26-29)

Find Wildlife

It can be any plant, animal, fungus, slime mold, or any other evidence of life (scat, fur, tracks, shells, carcasses!) that you find in the DC metro area.

Take a Picture of What you Find

Be sure to note the location of the critter or plant.

Share Your Observations

By uploading your findings to iNaturalist .

2. Identify! (April 30-May 5)

Even if you are outside the area, you can help identify the creatures found by City Nature Challenge observers.  It’s fun to see what people are finding! See our Resources page for information on iNaturalist trainings and ID parties.