Montana Bison Herd Tops a Thousand Animals Again

A free-roaming bison herd on the Montana prairie has passed a milestone that conservationists have chased for decades. The Montana Bison Herd kept by the nonprofit American Prairie now numbers more than a thousand animals, after this autumn's calf count put the total at a figure just past that mark. It is the first time in over twenty years that the herd has stood on four figures, and the moment arrives just weeks after a federal judge blocked an order that would have forced the animals off public land.

The count matters because most conservation herds are small and fenced in, conditions that threaten the genetic health of the animals and limit their ability to roam, graze and shape the grassland around them, according to the Good News Network. American Prairie's animals, by contrast, wander a vast reserve in the state's northeast, where their grazing, wallowing and movement help restore a prairie ecosystem that once supported herds beyond counting. The nonprofit says its longer-term goal is a herd five times the current size, and it stresses that ecological function matters more than any single number.

A count that crossed a line

Bison once moved across North America in numbers estimated in the tens of millions. Today the species numbers only a small fraction of that historic abundance, and fewer than one in ten of the remaining animals are managed for conservation or as a wild species, the Good News Network reports. Against that backdrop, a four-figure herd that roams freely is rare. The autumn count, which tallies calves born through the summer alongside the adult animals, put the total at 1,016 and confirmed the herd had crossed the line conservationists watch most closely.

The reserve itself is a patchwork of private ground and federal grazing allotments, and the animals move across both. Montana classifies bison as livestock rather than wildlife, so their movements and grazing are regulated much like cattle, through a system meant to prevent cross-breeding, disease spread and encroachment on neighbouring operations. American Prairie says it pays applicable grazing fees and taxes and works with neighbouring agricultural operations, and it presents the project as proof that conservation herds can exist alongside working cattle country.

The court fight behind the herd

The milestone comes with an unresolved legal shadow. The Bureau of Land Management revoked the nonprofit's bison grazing permits in May of this year and ordered the animals removed from federal public lands, under an interpretation of the Taylor Grazing Act that the agency read as providing land solely for the commercial production of food and fibre. The order would have forced the removal of nearly the whole herd from the allotments by the end of September, and the nonprofit warned it would have had to cull hundreds of animals, with harm to the herd's genetic diversity.

In early September a federal judge granted a preliminary injunction blocking enforcement of the removal order while the lawsuit proceeds, according to American Prairie's account of the ruling. The judge found that the nonprofit had demonstrated a likelihood of success on its claims and described the agency's new requirement as an interpretation beyond what Congress wrote. The ruling allows the animals to remain on three allotments in Phillips County while the court considers the underlying challenge, but it does not decide the case on its merits.

The dispute is not over. The state of Montana and ranching groups opposed the injunction, and the case is expected to keep moving through the courts. Montana Public Radio's reporting notes that the question will likely be litigated well into the future, with the animals staying put for now. For the nonprofit, the injunction bought time; for its critics, the legal questions about what federal grazing land is for remain open.

Why a thousand matters

Scale is what separates this herd from most others. Small, fenced groups can preserve animals, but they cannot easily preserve the behaviours that make bison a force on the landscape: wide roaming, selective grazing and the churning of soil that opens ground for other species. The Montana Bison Herd, moving across a large reserve, gets closer to that ecological role. Researchers and conservationists will watch whether future counts, habitat work and studies show the animals using the landscape in the ways the project promises.

The story also carries a counterpoint worth holding onto. The same legal framework that lets the herd graze also governs ranchers who depend on those allotments, and the agency's reversal followed a change in how it reads a law written long before conservation grazing existed. How courts resolve that reading will shape not just one herd but the rules for conservation on public land across the West. For now, though, the count itself is the news: a prairie herd that survived an eviction order is bigger than it has been in a generation.

Readers following wildlife comebacks can also read about an ancient sea creature rewriting the story of early ocean life and how European cities are preparing for a warmer future. More detail on the herd's legal fight is available from the Good News Network's report on the milestone.