https://gis.data.ca.gov/datasets/CDFW::western-black-headed-snake-range-cwhr-r068-ds1774
Western Black-Headed Snake Range - CWHR R068 [ds1774]
Range maps of California's regularly-occurring vertebrates were digitized as GIS layers to support the predictions of the CWHR System software, which allows...
westernblackheadedsnakerange