I wouldnt know why wolves wouldnt migrate down into colorado. They have been natives here before, and being the roaming dogs they are pretty good chance they follow the hills and creek bottoms here. But i would think most "Sightings" are yotes being that i have shot a few GIANTS lol that were still just yotes. Ive also seen grey and almost all black yotes before, along with all the bald ones i've seen the last year, that definatly dont make it through winter.