as an avid student of the American west and exploration, i have noticed that there is no real mention of moose in the old diairies and journals of the trappers and such. not even lewis and clarke, who were very fastidious in their zoological and botanical observations.. did shiras moose migrate south from alberta and sask and bc? and if they did, why are the body and horn confirmations so much different than canada moose, alaskan yukon moose, etc etc?