Bison are about six feet tall. The male is larger than the female. In spring, a cow gives birth to one calf. Baby bison are called calves. They are a reddish brown color.
Bison eat grass.
They normally feed five times a day. In the winter they use their hooves to dig for grass in the snow. Bison travel in herds. Bands can have more than 60 bison. From late fall to spring, males and females are separate.