Treaties, ranchers, gov’t complicate Yellowstone bison preservation

The American bison is an icon in the West, but even after the animal was brought back from the brink of extinction, the species continues to face challenges. The latest is a gruesome hunt that’s raising questions about what’s best for Native American tribes and the conservation of the species. 

Every winter, bison from Yellowstone National Park head to lower ground in search of food. They migrate north and west into the state of Montana, where they become fair game for hunters. 

This winter, more than 1,530 bison were killed, which is a record number. The slaughter was mainly by Indigenous tribes who have the right to hunt bison under historic treaties. To put it in perspective, in 2022, only 56 Yellowstone bison were “harvested,” which is the official term used when hunting bison.

Now, the U.S. Fish and Wildlife Service is in the midst of a 12-month threat assessment to determine whether Yellowstone bison need to be listed for protection under the Endangered Species Act. 

It’s a complicated issue that involves state and federal agencies, and it’s made worse by bad optics.

As large herds of bison slowly migrated north into public forest land and through a narrow valley, they were met by hundreds of rifles. The largest number of bison were killed near people’s homes and public motorways. Many of the slaughtered were pregnant females, so bloody fetuses and piles of entrails were left behind to litter the landscape. 

“The state of Montana doesn’t regulate the number of bison that tribal hunters can harvest or what their season dates are, things like that. Those are largely determined by each individual tribe,” said Morgan Jacobsen, information officer for the Montana Fish, Wildlife and Parks agency.

Jacobsen confirms that once bison cross over the Yellowstone border into Montana, they become the responsibility of the state. But he says managing them is a group effort. 

“A lot of this collaboration and communication happens through what’s called the Interagency Bison Management Plan (IBMP). This is an interagency group of federal and state and tribal entities that come together to look at solutions for managing bison outside of the park,” Jacobsen said. 

Tom Woodbury, the director of communications for the Buffalo Field Campaign, says the collaboration isn’t working.  

“It cannot be any more clear that the system that is called the Interagency Bison Management Plan, which was entered into in 2000, is totally broken. And Montana is just using it to interfere with the tribal harvest or exercise of treaty rights,” Woodbury said. 

For the last 20 years, Woodbury has been an advocate for free-roaming buffalo across the Yellowstone ecosystem. He says Montana is not interested in preserving Yellowstone bison. 

“The state of Montana does not consider our national mammal to be a wildlife species, they consider buffalo to be a diseased species in need of management,” Woodbury said. 

Jacobsen says that the IBMP meets several times a year to discuss many things, including how to reduce the risk of brucellosis, a transmissible disease that can cause bison and cattle to abort their babies. Culling bison is a way to reduce that risk. 

“We have been successful in eradicating Brucella abortus from cattle. So you would have animals on the landscape that don’t have the disease, and then if you graze them with animals that do have the disease, that have the symptoms, that have abortions, then obviously there will be an exposure like we’ve seen in this state for over 15 years,” Montana State Veterinarian Martin Zaluski said.

Zaluski is the state’s animal health official. His main role is to protect Montana’s livestock from disease. 

“The intersection between the bison population and brucellosis is that because of the value of Yellowstone bison, people would like to see those bison translocated to other parts of the country, rather than shipped to slaughter or potentially even hunted. But no other state is willing to accept bison that are infected with brucellosis because they don’t want to put their own animal health in jeopardy,” Zaluski said.

But Woodbury says it’s greed, not disease, that regulates the number of bison killed.

“It’s not about brucellosis. It’s about bison and cows competing for forage on public lands. Ranchers are very keen on maintaining a monopoly on grazing public lands, and they see wild bison as a threat to that monopoly,” Woodbury said. 

Straight Arrow News reached out to Montana’s Stockgrowers Association for comment, but received no response.

According to Woodbury, the battle over grass wouldn’t exist if Yellowstone allowed the bison to migrate onto the 8 million acres of land available in the park. Currently, the bison are limited to only 15% of the land in Yellowstone. 

“If bison were allowed to inhabit the ecosystem, and they keep showing us where they want to go by migrating out of the park, then there’s so much habitat available to them in the national forest. And yes, if the hunting by state hunters and the harvest by tribal hunters was taking place in the same way as with elk and deer and moose, nobody would be saying anything about it,” Woodbury said.

Woodbury is confident that the Yellowstone bison will be put on the protected species list this summer due to dwindling numbers. Before this winter’s harvest, there were 6,000 in the park. Now, there’s less than 4,500. 

“Montana would like to see the bison population reduced to 3,000, which is not a viable population of bison and would result in them being listed under the Endangered Species Act. So it’s pretty ironic because Montana’s policies are going to be the main reason that bison are eventually listed as threatened and endangered. From a scientific standpoint, because of what’s happened this winter, it’s much more likely that bison will get listed as a protected species, and that that will also force good outcomes. But until the dynamics are changed, until we start treating our national mammal with the respect, honor and dignity that it deserves, we’re definitely in need of more protection for wild bison than we presently have,” Woodbury said.

The 12-month threat assessment by the Fish and Wildlife Service ends in June and so does the opportunity for public input.