Currently, the Rocky Mountain bighorn sheep is on the Blue List of terrestrial vertebrates that are classified as “vulnerable.” This means that it is likely to become threatened or endangered in British Columbia if factors affecting its vulnerability are not reversed. The provincial or national ranking for the Rocky Mountain bighorn sheep is currently S3, which is on the Blue List. This status report has developed a revised ranking that includes viability of subpopulations, and the fragility of the species and its habitat in British Columbia. This revised ranking is S2S3 for the provincial or national rank.
Demarchi, R.A., Hartwig, C.L.; Demarchi, Donald A.. 2000. Status of the Rocky Mountain Bighorn Sheep in British Columbia. Ministry of Environment, Lands and Parks. Species Status Report. B99