American bison are conservation success stories that increasingly move from zoo management to open-range conservation herds. Their welfare reflects the transition from display to wild restoration.
Bison welfare in zoo settings is a story of successful transition: recognizing that the species's spatial needs far exceed what zoo environments can provide, many institutions have moved their bison into prairie conservation herds where behavioral expression is dramatically more complete. This transition itself represents an evidence-based welfare decision — accepting that some species cannot have good welfare in traditional zoo settings. The conservation outcomes of bison recovery are remarkable, but the welfare of bison in fenced conservation herds still depends on herd size, range area, and management practices. Indigenous-led bison restoration programs on tribal lands, which often prioritize natural herd dynamics over commodity production, have produced some of the most behaviorally complete bison populations in North America.