Bison Face

Bison horns are not only a distinctive feature of these iconic North American mammals but also serve important ecological and cultural roles in the regions where they are found. They are a symbol of the American West and the efforts to conserve and protect these majestic animals.  These horns are composed of a bony core that is covered by a sheath made of keratin, the same protein found in human hair and nails. The bony core continues to grow throughout a bison's life, while the outer sheath can wear down and regrow. They are used for defense against predators, such as wolves and bears, as well as for establishing dominance and competing for mates during the breeding season. In general, adult male bison (bulls) tend to have larger and more massive horns compared to adult females (cows). The horns of mature bulls can be thicker at the base and more robust than those of cows. They may also have a more pronounced curve or shape. Bison may also use their horns to clear snow and access vegetation in the winter as you see here.  This picture was taken in Yellowstone National Park in January 2023 along HWY 287 near the Tim Hill Geyser just after he raised his head from burrowing for feed.