Welcome to the
City Nature Challenge 2023!

What is the City Nature Challenge?

The City Nature Challenge began as a nature-observation competition between the San Francisco Bay Area and Los Angeles County in 2016. Since then, the event has expanded to a global competition, with more than 400 cities participating this year.

This year, the observation period of the City Nature Challenge will take place from April 28 – May 1, 2023. To participate, simply take a picture of any local wildlife and upload the picture to iNaturalist app or website. The number of observations and species uploaded in each participating region will be automatically tracked through the iNaturalist platform. For your observations to count for the Sacramento Region, the photo must be taken in one of the following counties: Sacramento, Yuba, Sutter, Yolo, Nevada, Placer, El Dorado, Amador, or San Joaquin.

The Greater Sacramento Region

2022 Results

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Using iNaturalist

🐞
① Find

Find plant or animal wildlife within your home, backyard, or city.

📷
② Photograph

Take a photo of the wildlife on your smartphone — make sure to note the location.

📱
③ Upload

Upload the photo to iNaturalist, available on the web, App Store, and Google Play.