Fermilab feature

Fermilab bison in pictures and musings

The Fermilab bison herd is now in pictures! Watch a 2-minute video, look at a map of the herd’s heritage, and read a playful letter of introduction from the lab’s first herd.

On May 9 the President signed the National Bison Legacy Act, which declares the bison the national mammal of the United States. It was a recognition of the majesty of the bison, whose population, no longer approaching extinction, has grown through conservation efforts.

The bison herd has long been a fixture at Fermilab, a symbol of the laboratory’s pioneering spirit. Fermilab’s founding director, Robert Wilson, welcomed the first herd to the site. They came with their own playful, fictional first-person introduction, as well as some information about their diet, growth and pasture. Go back in time to meet O-Boy, Short Horns, Buffy, Bev and Mev.

Since the bison’s arrival, visitors have come to Fermilab countless times to see the animals. The birth of the season’s first baby bison at the laboratory always makes the local news.

Fermilab herdsman Cleo Garcia and Roads and Grounds head Dave Shemanske are proud of the herd. In this 2-minute video, they talk about the Fermilab bison herd, its history and other fun bison facts.


In 2015, Fermilab ecologist Ryan Campbell received results from a genetic study that concluded that the Fermilab herd was 100 percent bison, with no evidence of cattle genes. The heritage of the herd can be traced to a handful of wildlife refuges and national parks:

Image: Diana Brandonisio

Image: Diana Brandonisio

Image: Diana Brandonisio

Image: Diana Brandonisio

Fermilab is proud of our bison herd, which reminds us daily of our connection to the Midwest prairie and remains a strong symbol of our steady march toward the frontiers of physics.