Tracks were georeferenced in the form of single latitude and longitude coordinates for each site with signs of U. thibetanus. Using these data, we determined nighttime light reflectance values; the highest nighttime light reflectance value associated
with occurrence tracks was used as a pragmatic criterion to define a threshold representing the light level above which the species avoids artificial light. This threshold was applied to the nighttime light image across the entire study area to reclassify it to binary: currently suitable (i.e., below the threshold) and currently unsuitable areas