If it's Bison your looking for then farmers markets often stock them (and water Buffalo,) But for the nutritional content have a look here.....
Bison meat has fewer calories and less cholesterol than chicken, fish or ostrich.
Bison meat is 97% fat free.
Bison meat has 40% more protein than beef.
Eating 5oz of bison, 3-4 times per week can help most people reduce LDL cholesterol 40 to 45% over a 6-month period.
Any good?