Citizen scientists, tourists, landowners and other interested parties submit photos, along with the location (gps, street address or locality name) they have taken of tree-kangaroos. These photos will be reviewed by experts in the field to confirm the species of tree-kangaroo photographed. This is part of a larger project involving surveys for tree-kangaroos in specific areas. The project is run under the auspices of the Tree-kangaroo & Mammal Group, a community interest group based in the Atherton Tablelands, QLD.