NationalGeographic.com [an error occurred while processing this directive]


 
Feature
More to Explore

Did You Know?
Related Links
Bibliography
NGS Resources

Polar Bears On Assignment

Polar Bears On Assignment

Polar Bears
Step into the world of writers and photographers as they tell you about the best, worst, and quirkiest places and adventures they encountered in the field.

Polar Bears Zoom In

Get the facts behind the frame in this online-only gallery. Pick an image and see the photographer's technical notes.

Polar Bears Zoom In Thumbnail 1
Click to ZOOM IN >>

Polar Bears Zoom In Thumbnail 2
Click to ZOOM IN >>

Polar Bears Zoom In Thumbnail 3
Click to ZOOM IN >>

Polar Bears Zoom In Thumbnail 4
Click to ZOOM IN >>

Polar Bears Zoom In Thumbnail 5
Click to ZOOM IN >>




Polar Bears Map

Thin Ice

Map Thumbnail

Click to enlarge >>




   
By John L. EliotPhotographs by Norbert Rosing



A polar bear paparazzo brings back close-up images of these Hudson Bay celebrities.



Get a taste of what awaits you in print from this compelling excerpt.

Nosing into frigid wind (above) a polar bear sniffs for prey. About 1,200 of these majestic carnivores haunt the western edge of Canada's Hudson Bay. Here near the southernmost tip of their range, they're treading on thin ice.

Like all polar bears, those on Hudson Bay need solid ice as a platform for hunting seals and seal pups, their main prey. Yet the bay is frozen only in winter and spring, so from July to November bears must live off their fat reserves. For millennia they've coped, but climate change may be tipping the balance. "Though there's considerable variation, spring breakup is two weeks or so earlier now than it was 20 years ago," says biologist Ian Stirling of the Canadian Wildlife Service. His data show that birthrate and adult bear weight are both down about 10 percent from 1980. "If the trend continues and the ice disappears from Hudson Bay," says University of Alberta biologist Andrew Derocher, "it's pretty clear that these bears will disappear too."

* * * *


Even at subzero temperatures, polar bears retain virtually all their body heat. Two layers of fur and thick fat act as superb insulation.

* * * *


A dozing bear won't lie for long as autumn blizzards hit. Snow, cold, and the promise of food will lure him toward Hudson Bay to stalk the winter ice. With ice tending to melt earlier in the spring, the winter hunt grows urgent.


Get the whole story in the pages of National Geographic magazine.


E-mail this page to a friend

Subscribe


Sights & Sounds
 Experience the thrill of watching polar bears romp and wrestle in this multimedia exclusive.

Video
Take an intimate look at polar bears, from cruising by gawking tourists to just nosing around, in this video from the field.

Forum
Disaster can strike when wild bears encounter tourists. In such situations, what should happen to a bear when it attacks a human?

Postcards
Get a leg up and e-greet a friend with an image of a piggybacking polar bear cub.



More to Explore

In More to Explore the National Geographic magazine team shares some of its best sources and other information. Special thanks to the Research Division.

Did You Know?
Vicks VapoRub, the pungent ointment that helps some of us breathe easier when we have colds, may now help young orphan polar bear cubs survive in the wild. Adult polar bears have an acute sense of smell, and a mother bear can easily detect that an orphaned cub is not her own. She will have nothing to do with the young bear; that cub, who needs to nurse until it is about two years old, will be left with the near impossible task of fending for itself. In the past when an orphaned cub found its way to Churchill, Manitoba, on the western edge of Hudson Bay, the government would have to place it in a zoo or euthanize it. Recently, though, researchers funded by Britain's Born Free Foundation have been taking orphans and suitable foster mothers (ideally with a cub of their own), rubbing their faces, necks, and backs with VapoRub, and airlifting them by helicopter to a remote release site. Will the VapoRub mask an orphan's smell enough that an adult female bear will be fooled into thinking the cub is her own? Will she take on the role of surrogate mother? The technique appears to have been successful in at least half the cases.
 
—Abby Tipton
Did You Know?

Related Links
Polar Bear Central
www.wwfcanada.org/en/PolarBearCentral/default.asp
Want to adopt a polar bear? This World Wildlife Fund–Canada website, designed for kids, gives you a chance to do just that and to learn about the behavior, habitat, and natural history of Ursus maritimus.
 
Churchill Northern Studies Centre
www.churchillmb.net/~cnsc/
A research and educational facility in Churchill, Manitoba, CNSC offers courses and adventure study tours that are intended to promote an understanding of polar bears and other wildlife of the region.
 
Space for Species
www.spaceforspecies.ca
Bring science to life. Log on to this Web-based learning program and monitor the travels of individual polar bears through satellite telemetry. Download a tracking journal and plot your bear's movements, record weather data, note changes in habitat, and chat with experts.
 
Polar Bears International
www.polarbearsalive.org
This website sponsored by a nonprofit group dedicated to the conservation of polar bears provides a wealth of information on the natural history of, threats to, and research on polar bears. It even has a video camera that broadcasts live from Hudson Bay so you can sign up and watch the bears in real time.

Top


Bibliography
Norris, Stefan, Lynn Rosentrater, and Pål Martin. "Polar Bears at Risk: A WWF Status Report,"  WWF–World Wide Fund for Nature (May 2002). 
 
Ovsyanikov, Nikita. Polar Bears. Voyageur Press, 1998.
 
Stirling, Ian. ed., Bears: Majestic Creatures of the Wild. Rodale Press, 1993.
 
Stirling, Ian Polar Bears. The University of Michigan Press, 1988.
 
Ward, Kenneth. Journeys with the Ice Bear. North Word Press, 1996.

Top


NGS Resources
Kranking, Kathy. "Polar Bears: Ultra Cool!" National Geographic World (December 2001), 24-8.
 
Rosing, Norbert. "Bear Beginnings: New Life on the Ice," National Geographic (December 2000), 30-9.
 
Eliot, John L. "Polar Bears, Stalkers of the High Arctic," National Geographic (January 1998), 52-71.
 
Crow, Sandra Lee. Penguins and Polar Bears: Animals of the Ice and Snow. National Geographic Books, 1985.

Top


© 2004 National Geographic Society. All rights reserved. Privacy Policy       Advertising Opportunities       Masthead

National Geographic Magazine Home Contact Us Forums Shop Subscribe