It is fascinating stuff, David. With the significant decline in the mule deer population in western WY (unfortunately predicted years ago, with the advent of rampant oil and gas development in the area, and consequently ignored), I sincerely hope these important migration routes can be restored. I think this was posted on here a while back, although I honestly can’t remember, so here it is:
Mule Deer Migration from Joe Riis Photography on Vimeo.