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Habitats and Adaptations: Bison are extremely gregarious
and are usually found in herds which may be quite large. Old bulls,
however are often loners and can be very bad-tempered. Most bison
are usually peaceful grazers, except during mating season. However
all bison are completely unpredictable and may attack anything
for no apparent reason.
Bison most often travel at a walk, but they are quick to respond
and can travel very fast over rough terrain for extremely long
distances. Some have been clocked at 56 kph (35 mph) for .8km
(half a mile).
Diet: Bison eat a variety of grasses,particularly wheat,
broom, wild rye, vanilla, June, meadow, and feather grass. They
also eat vetch and pea vine. They usually feed till late morning
and then will lie and chew cud during the hot afternoon hours.
They may also visit the nearest water hole or a nearby wallow.
They wallow or roll in the dust or mud to scratch and to cover
themselves with dust or mud serving as protection against biting
insects.
Breeding and Maturation: The rutting season takes place
in August and September. Although some bulls are capable of mating
at one year, most reach sexual maturity at age three. In order
to mate however, a bull must fight to achieve dominance, and most
dominant bulls are four to eight years old. Most cows begin breeding
after their third year and bear a calf each year. Gestation is
similar to humans - nine and a half months, and calving occurs
mostly in late April and May.
Miscellaneous: Before Europeans arrived in North America,
bison formed what were probably the largest aggregations of large
land animals on earth. Thirty million may be the most accurate
estimate. The animals ranged in huge herds over most of the continent,
mostly on the plains, but herds occurred as far east as New York
and New England and as far south as Georgia.
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