Every wildlife-vehicle collision reported in CritterCross, free for anyone to use in research, planning or teaching.
Choose a date range or state, or leave the fields blank to download everything. CSV opens in Excel or Google Sheets. GeoJSON opens in mapping tools like QGIS or ArcGIS.
The data is licensed under Creative Commons Attribution 4.0 (CC BY 4.0). You may share and adapt it for any purpose, including commercial use, as long as you credit CritterCross. Please cite it as:
Several people may report the same animal. Verified CritterCross admins review reports regularly and flag possible duplicates: reports of the same species within 100 meters and 5 days of each other. Using those criteria, the locations and the photos, an admin decides whether the reports are the same animal.
Reports judged to be the same animal are given the same eventID. Nothing is removed: every individual report stays in the download as its own row. Before counting animals or analyzing collisions, filter or group the data by eventID (for example, keep one row per eventID) so that duplicate reports don't skew your results.
Columns follow the Darwin Core standard used by biodiversity databases such as GBIF, so the data combines easily with other datasets.
| Column | Meaning |
|---|---|
occurrenceID | Unique ID of this report. |
eventID | Reports an admin confirmed as the same animal share an eventID. Count unique eventIDs to count animals. |
eventDate | Date and time of the observation, in UTC. |
decimalLatitude, decimalLongitude | Location from the phone's GPS (WGS84), or where the observer placed the pin. |
stateProvince | U.S. state the report falls in, worked out from its coordinates. Blank if it is outside the U.S. |
coordinateUncertaintyInMeters | GPS accuracy reported by the phone, when available. |
vernacularName | Common name of the species. |
taxonID | iNaturalist taxon page, when the species was chosen from iNaturalist. |
iconicTaxon | Broad group, such as Mammalia, Aves or Reptilia. |
individualCount | Number of animals. |
animalCondition | alive, fresh, decomposed, remains or unknown. |
roadType | highway, state_route, county_road, local_street or unknown. |
roadPosition | left_shoulder, in_road, median or right_shoulder, from the observer's direction of travel. Blank when not recorded. |
identificationConfidence | How sure the observer was: definite, probable or possible. |
recordedBy | Anonymous observer number. The same person always has the same number. |
associatedMedia | Link to the photo, when one was attached. |
license, rightsHolder | CC BY 4.0, CritterCross. |
The download never includes email addresses, account details or report notes. Each observer appears only as an anonymous number. See our Privacy Policy.
Questions or a larger request? Email contact@crittercross.org.