"Abstract - The Canada lynx (Felis lynx) is listed as endangered in Colorado. We evaluated its current and historic status in the state and its biogeography in southwestern North America. Eight sets of tracks, and eleven unreported or new specimens located during this project indicate that relatively sparse populations of lynx persist in central Colorado. Field tracking revealed lynx associated with dense spruce-fir forests on northern slopes with an abundance of large boulders and rock outcroppings. Since 1959, records of lynx have been restricted to elevations above 2700 m. The southern limits of lynx distribution in the western United States are disjunct, with Colorado, Utah, and perhaps Wyoming being separated from continuous range to the north. The southernmost specimen of a lynx was collected in Colorado at a location 3 km north of the New Mexico border. The disjunct lynx populations in Colorado show possible synchronization with population cycles in northern North America. Based on distributional records, habitat requirements, and migrational abilities, we suggest that lynx in Colorado may have been isolated since the last glacial period and do not receive emigrations from northern populations."