Boston Area City Nature Challenge

Join us for the 2020 Boston City Nature Challenge, a fun competition in which cities around the world compete to see who can make the most observations of nature, find the most species, and engage the most people from April 24 – 27!

Region for CNC Boston Area ProjectThis information will help create a more accurate picture of the Boston area's biodiversity, focusing within the I-495 corridor and out to Stellwagen Bank. Any observation of plants, animals, fungi, even microbes, in the greater Boston area made during these days count for the challenge. Scroll down for tips and resources on how you can help.

The Boston Area City Nature Challenge (CNC) is a collaborative project. Learn more about our effort here or email us at cncboston@gmail.com.

Get social with the City Nature Challenge! Facebook |Twitter | Instagram

Start now to be ready for the City Nature Challenge!

Step 1. Download the iNaturalist app and create an account.

• Download the app (easiest): Android App (Google Play) iOS App (iTunes), or use iNaturalist online.
iNaturalist "Getting Started" Guide.

Step 2: Record your observation with a photograph and upload the photo to the app.

Check out the "City Nature Challenge 2020: Boston Area" project page for the latest observations, including yours!

Check out the "Boston Area Biodiversity" project for the latest observations, including yours! As the CNC draws near in April, we'll share the link for the CNC 2020: Boston Area iNaturalist project. That project will only be active for the duration of the CNC.

Step 3: Confirmation

The iNaturalist community discusses and confirms the identity of the observation and lets you know.

Get Involved

CNC 2020

iNaturalist Project Page 

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About Us

CNE Events Calendar

Calendar of Events


Data Quests

Communal Media Kit (coming soon)

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Educator Resources

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Where Can I Go To Observe?

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Help Validate Observations

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Species Count by Town


 CanaturalsciencescncThe City Nature Challenge is being organized on a global scale by the California Academy of Sciences and the Natural History Museum of Los Angeles County.