Tympanuchus phasianellus columbianus]]> Tympanuchus phasianellus columbianus) is one of 6 subspecies of sharp-tailed grouse in North America. Historically its distribution ranged from the northwest in British Columbia to the southwest in Colorado. Isolated populations exist (or formally existed) in Washington, Idaho, Wyoming, Colorado, Montana (extirpated), Utah, Nevada (reintroduced) and Oregon (reintroduced) occupying 10% of its former range. Habitat loss and degradation from anthropogenic activities are cited as the primary reasons for its decline with the conversion of native shrub plant communities to agricultural production being the most prevalent.]]> No Copyright - Non-Commercial Use Only]]>