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Counting Species Through Citizen Science

What is a BioBlitz?

A BioBlitz is an event that focuses on finding and identifying as many species as possible in a specific area over a short period of time. At a BioBlitz, scientists, families, students, teachers, and other community members work together to get a snapshot of an area’s biodiversity. These events can happen in most any geography—urban, rural, or suburban—in areas as small as a backyard or as large as a country.

Smartphone technologies and apps such as iNaturalist make collecting photographs and biological information about living things easy as part of a BioBlitz. High quality data uploaded to iNaturalist become part of the Global Biodiversity Information Facility, an open source database used by scientists and policy makers around the world. 

Plan a BioBlitz

Get inspired with these BioBlitz Guides and videos to create an event at a school, in a park, or anywhere. Use the planning sheet to organize your ideas. During the event, collect observation data using the iNaturalist app or on paper with these data sheets: BioBlitz Observation Guide, Species Identification Cards, or Data Chart.

cover of Guide to Bioblitz PDF

Guide to BioBlitz  

Use this guide to help organize a BioBlitz. Also available in Spanish

cover of Guide to Bioblitz PDF

Guide to BioBlitz for Afterschool Programs  

Use this guide to help organize and lead BioBlitzes for afterschool and other informal education programs.

Video: Schoolyard BioBlitz

Video: Schoolyard BioBlitz  

Plan a Bioblitz for your school, class, or afterschool program.

Video: Do-It-Yourself Bioblitz

Video: Do-It-Yourself Bioblitz  

A Bioblitz is easy when you know what you need and where to start!

Classroom Activities

Engage students before, during, and after a BioBlitz event.

Introducing Biodiversity and BioBlitz

Introducing Biodiversity and BioBlitz  

Students prepare for BioBlitz by defining biodiversity and examining the characteristics of various plants and animals as examples of taxonomic groupings.

Conducting a Class BioBlitz

Conducting a Class BioBlitz  

Students use observation, identification, and mapping skills to conduct a local BioBlitz.

Analyzing BioBlitz Data

Analyzing BioBlitz Data  

Students investigate and analyze local biodiversity using iNaturalist observations.

More Resources

BioBlitz Collaborators


Record what you see in nature, meet other nature lovers, and learn about the natural world.

Encyclopedia of Life

Create a collection of your schoolyard BioBlitz results and generate a field guide to share with the community.

City Nature Challenge

Cities around the world will be competing to see who can make the most observations of nature, find the most species, and engage the most people in the City Nature Challenge.

BioBlitz Through the Years