National Day
National Bison Day
Celebrated on 11/02/2026
Quick Fact
National Bison Day, celebrated on the first Saturday in November, honors the American bison, which became the national mammal of the United States in 2016. These majestic animals once numbered in the tens of millions but were nearly driven to extinction by overhunting in the 19th century.
Origins and Establishment of National Bison Day
National Bison Day was first celebrated in 2012, following a concerted effort by bison advocates, conservation groups, and Native American tribes to recognize the ecological, cultural, and historical significance of the American bison. The movement gained momentum through the Bison Day Resolution, introduced in Congress by Senators Mike Enzi and John Thune, and Representative William Lacy Clay. The day was officially designated to fall annually on the first Saturday in November, aiming to raise awareness about bison conservation and their importance to the Great Plains ecosystem.
Evolution and Modern Commemoration
Since its inception, National Bison Day has grown from a grassroots observance into a nationally recognized event, bolstered by the passage of the National Bison Legacy Act in 2016, which designated the bison as the national mammal of the United States. Today, the day is celebrated with educational programs, cultural events at wildlife refuges and parks, and special activities highlighting bison’s role in Native American heritage. Many zoos, nature centers, and conservation groups host bison-themed activities, and social media campaigns like #NationalBisonDay help spread awareness about ongoing conservation efforts.
Facts & General Observations
- The American bison population once exceeded 30 million, but by the late 1800s, fewer than 1,000 remained due to overhunting and habitat loss.
- Through conservation efforts, the bison population has rebounded to around 500,000, mostly in commercial herds, with about 20,000 in conservation herds on public lands.
- Bison are considered a keystone species, as their grazing patterns help maintain the biodiversity of the Great Plains by promoting plant growth and providing resources for other wildlife.