Firefly Watch: View & Explore Data
2023 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.
"Visualization of firefly reports in 2023" created by Matthew Smith and Mapbox volunteers Lo Benichou and Sam Fader.
View firefly observation and density maps for previous years of the project.
- 2022 observation maps
- 2021 observation maps
- 2020 observation maps
- 2019 observation maps
- 2018 observation maps
Archived Data (2008-2016)
The Museum of Science in Boston spearheaded the Firefly Watch project for the first 9 years. The data from 2008–2016 is available for download as a Microsoft Excel (.xlsx) file.