Researchers from the Texas A&M College of Veterinary Medicine and Biomedical Sciences (VMBS) have discovered that bison in Yellowstone National Park—the only group of American bison that has continually existed as wildlife in the United States—now consist of a single large, interbreeding population derived from multiple historic bison herds.
My take from the article - not good or bad.
Researchers and conservationists used to see them as two herds, but seems more likely it’s one big herd with interbreeding. For most people that doesn’t matter, but for those concerned about the genetic diversity of the heard it may impact how they support the bisons.
Ty