It wouldn't surprise me. I've seen some deer do that, including blacktails. I've read some demographics of where the columbian whitetail was before the pioneers, and it looks like they were all the way up the puget sound. Because of that I believe that the genetics could still be showing themselves in deer all over w.Wa. I have a 6x7 I shot in 91 in that general area, that looks very much like a whitetail antlers, but the body looked more like a muley (big), tail was a blacktail.