Image credits:
Ram Dayal Vaishnav
City Nature Challenge
Cities around the world collaborate to share observations of nature in the City Nature Challenge

The City Nature Challenge is an international effort for people to find and document plants and wildlife in cities across the globe. It’s a bioblitz-style competition where cities are in a friendly contest with each other to see who can make the most observations of nature, who can find the most species, and who can engage the most people. This annual four-day event happens at the end of April. CNC 2024 will happen from April 26th till April 29th. Check CNC India website to see list of India cities participating in CNC and contact numbers of zonal/state coordinators –

Year of Initiation:
Project Coordinator:
Ram Dayal Vaishnav
E-mail Address:
Role in the project:
CNC 2024 India Coordinator
Institutional Affiliation:
Periodically active
No. of participants:
Above 1000
Geographical spread of project:
Run through an umbrella platform:
Purpose of the project:

The City Nature Challenge (CNC) is an annual international event to collaboratively record as many wildlife observations as possible during a four day challenge.

Coordinating institution/organisation:
California Academy of Sciences, Natural History Museum of Los Angeles
Location of the coordinating institution/organisation(s):
San Francisco and Los Angeles, California, USA
Data availability:
Immediately available to anyone
Participation in language other than English:
Appropriate age groups of participants:
All age groups
Citizen participation through:
Website, Mobile application
Why should people participate:

By participating in the City Nature Challenge, you’ll not only have fun exploring nature close to home but also contribute to valuable scientific research that helps protect and preserve our urban ecosystems. Whether you’re a seasoned nature enthusiast or just curious about the world around you, the City Nature Challenge offers a simple and rewarding way to connect with nature and make a difference for the environment.

Prior knowledge or expertise required:

This project is beginner friendly, anyone who is interested to learn about biodiversity can participate in the project by simply uploading their observation about nature on iNaturalist app or website.