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Bison (Buffalo)
Wood bison became extinct in Alaska about 500
years ago, possibly due to changing climate. Plains Bison were introduced
to the state in 1928. The large shaggy animals, long a romantic symbol
of the early American West, have thrived in this area. Bison are
migratory animals by nature. Alaska's wild bison do not remain in single
herds, but scatter alone or in groups ranging up to 50 animals or more.
In the Delta Junction area, they move far up the Delta River in early
spring to secluded meadows where they calve. Around August they travel
back downstream, eventually moving onto the Delta Junction Bison Range;
and finally in late fall, onto farms where they remain throughout the
winter.
Bison are grazing animals and in Alaska find only limited amounts of
food along rivers, in recent burns, and sedge potholes. Their diet is
made up mainly of various grasses and forbs like vetch, a favored summer
food found on gravel bars. Sedges, silverberry, willow, and ground birch
are also eaten. The bison is the largest native land mammal in North
America. A full-grown bull stands 6 feet at the shoulder, is up to 10
feet long and can weigh more than a ton. Full-grown cows are smaller
but have been known to weigh over 1,200 pounds
Viewing opportunities: Photography and wildlife
viewing enthusiasts will find the bison on their winter range in the
Delta are fairly accessible, although respect and caution are urged
when approaching this large animal. Bison are frequently visible throughout
the summer at an overlook near Mile 242 on the Richardson Highway.
Binoculars or a spotting scope are essential
Black Bears
inhabit most
of the forested of Alaska , except some of the large islands in the
Gulf of Alaska and Southeast Alaska. They are found from sea
level to the alpine areas.
Black Bears can range in color from black(most common), brown and
cinnamon.
Black bears are the smallest of the North American bears. Adult bears
stand about 29 inches at the shoulders and measure about 60 inches
long.
Upon emergence in the spring, Black Bears feed on freshly sprouted
green vegetation as their main food item, but they will eat nearly
anything they encounter. Winter-killed animals are readily eaten,
and in some areas black bears have been found to be effective predators
on newborn moose calves. As summer progresses, feeding shifts to salmon
if they are available. In areas without salmon, bears rely primarily
on vegetation throughout the year. Berries, especially blueberries,
are an important late summer-fall food item. Ants, grubs, and other
insects help to round out the black bear's diet.
An average adult male in spring weighs about 180-200 pounds, however
they are considerably lighter when they emerge from winter dormancy
and may be 20 percent heavier in the fall before hibernation.
Brown Bears (Grizzlies)
are very much a part
of the Alaska scene and are a favorite topic with most hunters, hikers,
photographers, and fishers. The term “brown bear” is commonly used
to refer to the members of this species found in coastal areas where
salmon is the primary food source. Brown bears found inland and in
northern habitats are often called “grizzlies”. Brown
bears can
be found throughout Alaska with the exception of the Aleutians and
a few islands in the Southeast. They Prefer open areas such
as tundra, coastlines, and alpine meadows.
Mature males weigh between 500 and 900 pounds with extremely large
individuals weighing as much as 1,400 pounds. Females weigh
half to three-quarters as much.
An extremely large
brown bear may have a skull 18 inches long and 12 inches wide. Such
a bear, when standing on its hind feet, is about 9 feet tall.
Inland bears are usually smaller than coastal bears, probably because
they do not have a readily available supply of protein-rich food,
such as salmon, in their diet.
Like humans, brown bears consume a wide variety of foods. Common foods
include berries, grasses, sedges, horsetails, cow parsnips, fish,
ground squirrels, and roots of many kinds of plants. In some parts
of Alaska, brown bears have been shown to be capable predators of
newborn moose and caribou. They can also kill and consume healthy
adults of these species and domestic animals. Bears are fond of all
types of carrion as well as garbage in human dumps.
Caribou are herd animals
and
have been a distinctive part of the Alaska landscape
for thousands of years. Caribou are found throughout the state
except for the southeastern Panhandle and most of the off shore islands.
Caribou are large members of the deer family and the only members
which both sexes grow antlers. Biologists estimate that there are
close to a million caribou in Alaska.
Caribou are largely a foothills mountain
animal found at or above the timberline.
In the summer caribou eat a variety of plants which includes
willow leaves, grasses, and flowering plants. In the winter they eat
lichens, small shrubs, and dried sedges.
The weight of Mature bulls average 350-400 pounds and mature females
average 175-225 pounds nds. Females weigh half to three-quarters as
much. An extremely large brown bear may have a skull 18 inches long
and 12 inches wide. Such a bear, when standing on its hind feet, is
about 9 feet tall. Inland bears are usually smaller than coastal bears,
probably because they do not have a readily available supply of protein-rich
food, such as salmon, in their diet
There are 32 different herds in Alaska , the Delta herd consists of
aprox. 3,200 caribou.
Lynx
is the only cat native to Alaska.
Lynx habitat over most of northern North America
Because they are shy and unobtrusive animals, people think that lynx
are scarce. In Alaska, however, they are commonly seen during long
periods of summer daylight, especially during years that they are
abundant. “Link” is a common local name for lynx in Alaska and the
Yukon.
The lynx is a large, short-tailed cat, similar to the bobcat, but
distinguished by its long legs, furry feet, the long tufts on the
tip of each ear, and a completely black-tipped tail. The large broad
feet function as snowshoes to aid the lynx in winter hunting and traveling.
The dense soft fur is buffy grey with indistinct spotting. Most adults
weigh from 18 to 30 pounds. Male lynx are generally larger than females
and occasionally weigh 40 pounds or more.
The primary prey of lynx in most areas is the snowshoe hare, grouse,
ptarmigan, squirrels, and small rodents.
Moose
are the world's largest member of the deer family. The Alaska race
is the largest of all the moose. Moose are found throughout
the state and are most abundant in recently burned areas that contain
willow and birch shrubs, on timberline plateaus, and along the major
rivers of Southcentral and Interior Alaska.
During fall and winter, moose consume large quantities of willow,
birch, and aspen twigs. In some areas, moose actually establish a
"hedge" or browse line 6 to 8 feet above the ground by clipping
most of the terminal shoots of favored food species. Spring is the
time of grazing as well as browsing. Moose eat a variety of foods,
particularly sedges, equisetum (horsetail), pond weeds, and grasses.
During summer, moose feed on vegetation in shallow ponds, forbs, and
the leaves of birch, willow, and aspen.
Males in prime condition weigh from 1,200 to 1,600 pounds. Adult females
weigh 800 to 1,300 pounds.
Biologists estimate that there are roughly 155,000 moose in Alaska
Moose are often seen in the early morning and evening hours feeding
on vegetation in shallow ponds and eating leaves from birch
and willow trees along the highway.
Wolves are
found throughout mainland Alaska and on all of the major islands in
Southeast. Wolves are carnivores, and in most of mainland Alaska
moose and/or caribou are their primary food, with Dall sheep being
important in limited areas. In Southeast Alaska, Sitka black-tailed
deer, mountain goats, and beaver are the most important sources of
food. During summer, small mammals including voles, lemmings, ground
squirrels, snowshoe hares, beaver, and occasionally birds and fish
are supplements in the diet. The rate at which wolves kill large mammals
varies with prey availability and environmental conditions. A pack
may kill a deer or moose every few days during the winter. At other
times, they may go for several days with almost no food.
The pelt
color of wolves living in Alaska ranges from black to nearly white,
with every shade of gray and tan between these extremes. Gray or black
wolves are most common.
Wolves can still be seen and heard in most parts of Alaska by those
willing to spend time in remote areas.
Most adult male wolves in Alaska weigh from 85 to 115 pounds, but
they occasionally reach 145 pounds. Females average 5 to 10 pounds
lighter than males and rarely weigh more than 110 pounds. Wolves reach
adult size by about 1 year of age. |