American Bison / Day 30 / Yankton, South Dakota / Mile 1,304 / Photo by Chris Register/www.conversationswithus.com American Bison / Day 30 / Yankton, South Dakota / Mile 1,304 By Heidi Marttila-Losure January 2, 2017 American Bison / Day 30 / Yankton, South Dakota / Mile 1,304 / Photo by Chris Register/www.conversationswithus.com 2017-01-02 Heidi Marttila-Losure Share ! tweet