Title:    "Alaska Aurora Unpredictable Spirals"

Alaska Artist Dianne Roberson

Moose | Northern Lights | Alaska

Stock #  DA 099

Digital Art    |     Color Print on glossy paper

Size:  20" wide by 16" High     $  45.00             

Size:  14" wide by 11" High     $ 35.00              

Moose are the largest species in the deer family with long, slender legs that support a massive body and a short, thick
neck and humped shoulders that support a large head.  The Alaska-Yukon race is the largest of all moose.  Only bulls
have antlers and they are the largest of all animal antlers, over six feet wide and 80 pounds.  Antler is the fastest
growing tissue of any mammal, growing a pound and an inch a day in summer.  They start growing in spring and are
shed each winter annually.  Anters are palmate, having main and brown palms in a butterfly shape.  Fur is generally
dark, black to brown or grayish brown, with the lower legs being lighter and their underfur and long guard hairs provide
excellent insulation from the cold.

Moose are the least social species among the deer family, remaining fairly solitary except during the mating season.  
They are not territorial.  Outside of the rutting period, males and females are separated spatially, seasonally, and/or by
habitat. Moose are crepuscular by nature, being most active at sunrise and sunset.  Despite their ungainly
appearance, moose are able to run silently through dense forests.  Maximum speeds have been clocked at 35 mph.  
Moose are also strong swimmers, being known to swim up to 12 miles.  Their daily pattern includes traveling to new
feeding sites, avoiding predators, browsing on plants, standing, and lying down for the rumination of their food.  
Moose mainly stay in the same general area, though some populations seasonally migrate up to 110 miles. Home
range size of moose varies between 1.4 to 35 square miles.  During their first year of life, young moose occupy the
same home range as their mother and do not establish their own home range until the age of two.

Moose are herbivores and primarily browse upon the stems and twigs of woody plants in the winter and the leaves
and shoots of deciduous plants in the summer.  Willows are the most preferred forage where available.  In interior
Alaska, willows accounted for 94% of the biomass consumed in the winter.  Food quality depends on twig bite size,
fiber, species, and spacing in habitat.  During winters of deep snow, food may be inaccessible to moose.  They have a
difficult time walking in snow depths of greater than 3 feet.  During summer months, moose often feed on aquatic
plants in ponds and lakes.  They can dive to 20 feet in search of plants.  This food is highly digestable and abundant
in many areas.  An adult requires about 44 pounds of food per day to maintain energy levels for foraging and traveling.

Moose breed in September and October of each year, during a breeding season often referred to as "the rut".  
Gestation averages about 231 days, with cows giving birth to one calf on average and often twins.  Calves are born at
an average weight of 36 pounds and gain approximately 2.2 pounds per day while they are nursing .  Males and
females are sexually mature at two years of age, but full growth potential isn't reached until four or five years of age.  At
that age, females are at their reproductive peak and males have the largest antlers.  Moose are polygamous, and only
females take care of their young for a period of one year.  Females seek secluded sites to give birth to young and
remain highly protective until their calves are weaned.  Calves can browse and follow their mother at three weeks old
and are weaned at five months.  They remain with their mother until about one year after their birth, when the mother's
next young is born.

Northern Lights

Also know as the Aurora Borealis, these lights are best viewed in the cold dark winter months in Alaska.   The
beautiful blaze of the
Northern Lights, or Aurora Borealis, begins when energetic electrically charged particles
accelerate along the magnetic field lines into the upper atmosphere, where they collide with gas atoms, causing the
atoms to give off light. The air lights up rather like what happens in a fluorescent light tube.  The colors reflect gases,
the most usual yellow-green color coming from oxygen. Red coloring is also due to oxygen with a contribution from
nitrogen and violet is due to nitrogen. The charged particles originate from the sun, and it is the “weather” conditions
on the sun that decide whether or not we will see the aurora.

The website address will not be printed on your print.  This print is treated with an ultra violent protective coating.  It will
be rolled and inserted into a mailing tube if ordering a glossy paper print, if ordering stretched canvas this print will be
boxed.   The print  will be mailed first class by the U.S. Postal Service and insured.
Art World Plus  |  Digital Art Gallery

Phone:  1-404-462-4615
Inside Alaska phone:  1-907-775-4229

Alaskan Art by Alaskan Artist Dianne Roberson
Copyright  2010        ©   Dianne Roberson    All rights reserved