There
are several predators in the Park, including bobcats, eagles, badgers,
and cougars, but the coyotes are the most easily seen.
Most
research has shown that coyotes usually feed on small mammals and
birds. They do not feed heavily on livestock or larger ungulates,
like elk, deer, or bison unless the animal is already dead or dying.
Little
is known about the predatory behavior of wild coyotes, but a sudden
hop or pounce is most often used for capturing small animals, like
shrew or mice, where group effort may be used in the prairie dog
towns. Coyotes depend on various senses to locate their prey, with
sight, hearing, and smell being most important-usually in that order.
Coyotes are small mammals, about the size of
a medium-sized dog. They vary widely in coloration, ranging from an almost
pure gray to a red-brown. The fur is generally much thicker in winter-giving
the animal a heavier appearance, with the summer coat being much shorter
and lighter.
Listen to the coyote (30k wave file)
A
wide variety of habitats all across the United States can be called
home for the coyote. They are found in both the grasslands and pine
forest here in the Park. Each individual coyote or coyote pack has
a home territory that is used on a regular basis, but not actively
defended except during mating periods and when the coyote pups are
in their dens.
The dens of coyotes can also be found in a variety
of places, including rocky ledges, brushy slopes, hollow logs, even small
caves. Sometimes the shelters of other small animals are used. They may
even use the same den from year to year. However, it is not uncommon for
coyotes to move to another den early in the spring while their pups are
quite young. The reason for these moves is not really understood, but
it may have something to do with disturbances near the original den or
possibly an infestation of parasites like fleas or lice. These moves are
generally not far because the mother coyote has to carry each pup, one
by one, to the new den. One of the longest recorded moves was 8 kilometers
(5.4 miles).
Coyotes
mate only once a year, between March and April. The pups are born blind
and helpless about two months later. The young are cared for by the mother
and other helpers, usually siblings from a previous year. The adult males
of the pack help rear the young by bringing food to the mother and later,
after weaning, to the pups themselves. The pups emerge form the den in
about three weeks, playful and ready to learn from their parents how to
fend for themselves. This learning relationship often lasts for about
a year. Coyotes may be active throughout the day, but they are more easily
seen early in the morning and around sunset.
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