Firefly Watch: View & Explore Data
2021 Firefly Observation Data
The map below shows firefly observation data. Click on an individual marker to see a participant's first and last recorded observations at that location. See the legend below the map for an explanation of the "fireflies seen" icons.
"Fireflies Seen" Legend
Icons indicate the average of all 3 counts submitted per observation period.
View firefly observation and density maps for previous years of the project.
Archived Data (2008-2016)
The Museum of Science in Boston spearheaded the Firefly Watch project for the 9 years. The data from 2008–2016 is available for download as a Microsoft Excel (.xlsx) file.