very interesting. also telling how he chose to cross the mississippi at its narrowest spotWe're referring to the same one - that buck you mentioned crossed the Mississippi river several times.
Edit - found an article about it
This Buck Swims Across the Mississippi River and Back Every Year During an 18-Mile Migration
Studies conducted by the Mississippi State University Deer Lab show that some Southern whitetails migrate more than hunters might expect.www.outdoorlife.com