Monday, November 30: ZooLights is cancelled due to today’s predicted storm, which could bring strong gusty winds, heavy rain and potential scattered power outages. We apologize for the inconvenience, but we want to ensure a safe experience. All ticket holders will be automatically refunded. More

ZooLights at Stone Zoo SOLD OUT Dates: Dec. 1 - 7, 10 - 13, 17 - 20, and 23. Advance ticket purchase required.

Know Before You Go: To ensure the safety of staff and guests, we've made modifications to the Zoo experience in accordance with public guidance and health recommendations. Please review our Re-Opening FAQs (FPZ and SZ) before your visit. Members:​ Online reservations are required for your visit.


Boston Area City Nature Challenge

Save the Date!
From April 30 - May 9, 2021, join us for the 2021 City Nature Challenge!

We'll once again be participating in the global effort to document urban biodiversity within the I-495 corridor, out to Stellwagen Bank, including Cape Cod and islands. Thanks to your efforts documenting biodiversity, we recorded 15,347 observations of 1,702 species by 1,069 observers in the 2020 Challenge. For 2021, we'll build on the success of a place-based focus to document biodiversity and encourage you to keep it local and safe! Go slow and steady to explore in detail the biodiversity near you. 

About the 2020 City Nature Challenge

The 2020 City Nature Challenge was modified for its 5th Anniversary. Instead of competing, we worked with cities around the world to celebrate the biodiversity around us - wherever we might be! We embraced the collaborative side: making and sharing observations as a global community, celebrating the healing power of nature, documenting our local nature as best we could. 

Region for CNC Boston Area Project

Across the Boston area (which this year reached out to Cape Cod), we encouraged documentation of nature in homes, backyards and neighborhoods, individually and as families; and participation online by helping to identify or annotate observations. We took full advantage of iNaturalist as a social platform and community to come together online to document biodiversity.

The information we collect helps create a more accurate picture of our biodiversity at this time of year. Any observation of plants, animals, fungi, even microbes, in the greater Boston area including Cape Cod and the islands this year that was recorded during those four days was automatically be included. 

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

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.

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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Online Resources 

CNE Events Calendar

Calendar of Events


Data Quests

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Help Validate Observations

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Educator Resources

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About Us



 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.