I've never seen one myself, but I wonder if it might be a hybrid. Waaaay back in school, I remember hearing that although uncommon, they do happen where ranges overlap.
Wapiti and Grizzley, I'm another ND hunter, at least until we moved to SoDak a few years ago.
My uncle owns a small acreage up in the Killdeer Mts next to public land, so we would all meet up there every year for whitetails and muleys. There was a fair amount of pressure, but since I'm...