First, studies indicate that less than 10 percent of the Yellowstone bison are presently infected with brucellosis. Of these animals, only pregnant female bison have the biological capability to transmit the disease. Transmission can only occur if livestock ingest a significant quantity of infected birthing material. There has never been a documented case of brucellosis transmission from wild bison to domestic cattle.

Second, domestic livestock grazing in the Greater Yellowstone Area are vaccinated for brucellosis. The vaccine is at least 75 percent effective. Vaccinated cattle and brucellosis infected bison have commingled in Grand Teton National Park for over 45 years without a single documented case of brucellosis transmission. Third, wild bison and domestic cattle do not inhabit the same range at the same time. Bison migrate from YNP to lower elevations in Montana in the winter and spring months. They return to YNP in the late spring when forage is accessible in the Park. Domestic cattle do not graze these areas during this period because the climate is too harsh to support them.

Third, many other wildlife species including elk, deer, moose, wolf, coyote, bear and numerous others have also been exposed to brucellosis and may carry the disease. If Montana is so deeply concerned about brucellosis, why are bison the only species targeted by the state livestock industry.

The truth is that the Montana livestock industry is using brucellosis as a front for the real reasons they wish to exclude wild bison from Montana. What it all boils down to is access to grass. Livestock producers, particularly those grazing on public land, are concerned that the addition of a large ungulate species would lessen the amount of grass available for their cattle. They also claim that wild bison will damage fences and injure their animals. In seven years of observation near the western boundary of YNP, we have not seen damage to fences caused by bison except when they are being chased by MDOL agents. What we have observed, however, is that bison walk around fence lines or simply jump fences. It may be hard to imagine a 2000-pound bison jumping a fence, but we can assure you that it is possible and does happen. 

Further, livestock producers already have to deal with fence damage done by elk and deer. There is no indication from our observations that bison will significantly add to this unavoidable aspect of ranching operations in native wildlife habitat. Other concerns that have been raised about wild bison ranging in Montana include the presence of bison on roads and private property. Both of these issues can be adequately addressed by employing sound wildlife management practices. There are currently several projects underway in Canada and northern Montana to create wildlife overpass/underpass migration corridors. This technique could be employed in affected areas near Yellowstone. Private property owners who wish to exclude bison from their land can install larger bison proof fences. Both of these practices will cost taxpayers significantly less in the long run than continuing the current policy of keeping bison out of the state.

In summary, we believe that H.R. 2428 sends a message to the Montana livestock industry that their current management practices are not solution oriented and are out of touch with the vast majority of Americans. The bill advocates common sense alternatives that protect Yellowstone bison as a native wildlife species and would cost taxpayers significantly less than the current program of hazing, capturing and killing bison at Yellowstone’s border.