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Boston Area City Nature Challenge

Thank you to everyone who participated in the Boston Area City Nature Challenge – a fun competition with cities across the world to document (April 26 - 29th) and identify (April 30 - May 5th) the most species! With 1,107 participants, we made the top-ten list for most observers!

Boston-Area 2019 Rankings (out of 159 cities worldwide): 

Observations = 15th place
Species = 25th place
Observers = 10th place
Identifiers = 9th place 
View the leaderboard for all rankings. 

Citynaturechallengemap BoxAbout the Challenge:

Observation 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 Challenge days count. 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.

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 2019: 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 2019: 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.

Tips & Resources

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Where Can I Go To Observe?


Data Quests

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Help Validate Observations

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Educator Resources

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Recent Observations

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Species Count by Town

CNE Events Calendar

Calendar of Events

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Vision & Partners



 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.