Terri and Mike Vidricaire from Waterton Lakes National Park came across this herd of elk. You can clearly hear the loud wailing bugle calls the male elk use to compete for females. The video was taken on what the locals refer to as the "flats," more commonly known as Marquis Hole. For two days in a row, and without the crowds, the two observed more than 300 elk nearing the end of the rut. | CBC Calgary