How to Identify Bison in New Jersey

American bison are the largest land mammals in North America. Adult males weigh 1,500 to 2,000 pounds and stand 5.5 to 6.5 feet tall at the shoulder; females are smaller, weighing 800 to 1,000 pounds. Both sexes have a distinctive massive head with short, curved black horns, a pronounced hump over the shoulders, and a thick neck and front body. Their fur is dark brown or black and becomes shaggy and longer in winter. The rear portion tapers toward the hindquarters, giving them a front-heavy appearance. A mature bison's build is unmistakable from a distance due to the prominent shoulder hump and broad head.

Bison differ from cattle in several ways. Bison have a large hump over the shoulders; cattle have a level back. Bison heads are heavier with shorter, more curved horns; cattle horns are longer and less curved. Bison have thicker fur and a beard-like fringe under the chin and neck. The body profile is front-heavy and muscular in bison, whereas cattle appear more evenly proportioned. American bison are also larger than most cattle breeds. In North America, the only animal that might be mistaken for a bison at a distance is a large domestic buffalo or a musk ox, but musk ox are Arctic animals unlikely to be encountered in the continental United States.

You cannot see wild bison in New Jersey. Only two unverified observations of bison have been recorded in New Jersey on iNaturalist, likely from captive or escaped animals at zoos or private facilities. If you want to observe a bison while visiting New Jersey, some zoos maintain small herds in captivity. The Bronx Zoo in nearby New York has exhibited bison. For a genuine experience observing wild bison in their natural habitat, you would need to visit western grassland reserves such as the National Bison Range in Montana, Yellowstone National Park, or the Great Plains Grasslands.

Bison were hunted to near extinction between 1800 and 1900. European settlers and indigenous peoples hunted them for food, hides, and bone. Commercial hunting in the 19th century was especially destructive; professional hunters killed millions of bison to eliminate them as a perceived obstacle to westward expansion and to reduce indigenous peoples' food sources. By the 1880s, fewer than 1,000 wild bison remained in North America. Recovery efforts began in the early 1900s through protected reserves, but wild populations remain concentrated in western grasslands where the habitat suits them. The eastern United States never had bison reintroduced because the landscape converted to forests and cities, and the grasslands that supported them no longer exist.

Only one species of bison lives in North America: the American bison (Bison bison). There are two subspecies. The plains bison is smaller and lived historically across the Great Plains and western grasslands. The wood bison is larger and lived in the boreal forests and grasslands of northern Canada and Alaska. Today, most wild bison are plains bison found in western reserves, national parks, and ranches. A separate species, the European bison or wisent (Bison bonasus), exists only in protected forests in Europe and is managed through reintroduction programs. No European bison are found wild in North America.

No historical evidence indicates that wild bison lived in New Jersey. Bison inhabited the Great Plains and western grasslands. The eastern limit of their historic range was roughly the Mississippi River valley and scattered populations in the Ohio River drainage. New Jersey was always outside the native bison range. The state's ecosystem of deciduous forests, tidal marshes, and coastal plains was never suitable bison habitat. Indigenous peoples in New Jersey hunted white-tailed deer and smaller mammals instead. The dense vegetation and human settlement that characterize New Jersey today would have been equally unsuitable for bison 500 years ago.

Fossil evidence shows that bison have inhabited North America for millions of years. The steppe bison lived during the Pleistocene epoch. The American bison evolved from earlier bison species and is thought to have arrived in North America between 10,000 and 11,000 years ago. For the last 10,000 years, bison were the dominant large herbivore across grasslands from Canada to Mexico. Indigenous peoples hunted them sustainably for thousands of years. European arrival in the 1600s began intensive settlement, but large-scale commercial hunting only decimated bison populations in the 1800s. The entire era of unfettered wild bison across North America lasted roughly 10,000 years and ended within about 100 years.

New Jersey hosts several large wild mammals despite the state's density and urbanization. White-tailed deer are abundant and commonly seen throughout the state, especially at dawn and dusk. Black bears have made a comeback and are increasingly encountered, particularly in the northwestern forested regions and swamps. Coyotes are now present throughout the state. River otters have been reestablished in some waterways. Bobcats, though shy and rarely seen, occur in low numbers in forested areas. None of these species match the size or presence of a bison, but they are the genuine large wildlife of New Jersey.