Administrative geometry only: geoBoundaries RUS ADM1, boundaryID RUS-ADM1-28173009; geography represented: 2017. Source: OpenStreetMap contributors / Wambacher. License: Open Database License 1.0 https://opendatacommons.org/licenses/odbl/1-0/ ; attribution https://www.openstreetmap.org/copyright ; geoBoundaries https://www.geoboundaries.org/ . Original: https://github.com/wmgeolab/geoBoundaries/raw/9469f09/releaseData/gbOpen/RUS/ADM1/geoBoundaries-RUS-ADM1_simplified.geojson . Changes by WhereBear: coordinate rounding, Douglas-Peucker display simplification, negative longitudes shifted by 360 degrees for the antimeridian. This derived geometry is made available under ODbL 1.0. It is an administrative reference, not a species range map. Population estimates are separate factual records with their own cited sources. Retrieved 2026-09-23.