City Nature Challenge 2025

Back for the 7th year, Calgary will compete and collaborate with over 500 cities from around the world to document urban biodiversity like never before. Cities will compete to see which can make the most observations, document the most species, and engage the most people.

April 25 – April 28

Document wild plants and animals by taking photos or making audio recordings.

Then upload them to iNaturalist.ca or the iNaturalist app.

April 29 – May 4

Upload all your observations to iNaturalist and help to identify posts made by others.

May 5

Local, National, Global results announced.

Download iNaturalist from Google Play
(Free)

Download the new iNaturalist Next from Apple Store (Free)

Why Participate:

There is nature all around us! Knowing what species are in our city and where they are helps us study and protect them, but the ONLY way to do that is by all of us – scientists, land managers, and the community – working together to find and document the nature in our area.

By participating in the City Nature Challenge, not only do you learn more about your local nature, but you can also make your city a better place – for you and other species!

Where to Participate:

Calgary Metropolitan Region:

Calgary, Cochrane, Airdrie, Chestermere, Okotoks, High River, Foothills County, Rocky View County

How to Participate:

Get outside April 25-28 and take photos of plants, animals, birds, insects, lichens, mosses, fungi, fish... etc. etc. etc.

Then upload your observations to iNaturalist (App or Desktop) before midnight May 4.