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Nat Geo photogs document Yellowstone grizzly bathtub

Nat Geo photogs document Yellowstone grizzly bathtub

Nathaniel Bowersock, Yellowstone wildlife technician, poses with a grizzly fitted with a critter cam. The latest issue of Yellowstone Science includes an article about the device that shows things about to be eaten. (Yellowstone Science)

January 5, 2016 by Angus M. Thuermer Jr. 5 Comments

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Yellowstone National Park scientists and photographers working for National Geographic have documented a “bear bathtub” used by grizzlies to cool off during the summer.

Park researchers discovered the pool some years ago while retrieving a radio collar that slipped off a grizzly. An air search over the backcountry of the world’s first national park revealed the approximate location of the collar. Park workers later visited the site with a hand-held receiver to pinpoint and collect the transmitter.

The discovery and photographs are part of the latest edition of Yellowstone Science, a collection of articles regarding research in the federal reserve. The issue includes an article about critter-cams fitted to radio collars on black and grizzly bears, offering views of things that are about to get eaten. Yellowstone’s bear management biologist Kerry Gunther edited the issue.

Among the topics covered in the 100-page annual are a review of 40 years of grizzly bear recovery and a piece on bears’ omnivorous diet. Other stories cover the decline of whitebark pine, changes to grizzly demography and how the imperiled species responds to changing food supplies. Authors wrote about the rate at which hikers arm themselves with bear spray and how grizzlies respond to increasing numbers of visitors.

In one short piece Gunther puts the danger of grizzly attacks in perspective saying visitors are about as likely to get struck by lightning as to be killed by a grizzly. (Six people were killed by grizzlies in the park’s 143 years, compared to 5 killed by lightning.)

“The chances of being injured by a grizzly bear while staying in a roadside campground in Yellowstone is approximately 1 in 22.8 million overnight stays,” he wrote.

Along with the critter cam, the bear bathtub story adds delight to the fascinating lineup of scientific information. U.S. Geological Survey biologist Mark Haroldson, National Geographic photographer Michael Nichols and Bozeman, Montana photographer Ronan Donovan shared the byline.

Do grizzlies strip when bathing?

The latest issue of Yellowstone Science includes an entertaining report and camera-trap pictures of a bear bathtub. National Geographic photographer Michael Nichols and Bozeman, Montana shooter Ronan Donovan documented the scene. Biologists discovered the bathtub when searching for a lost radio collar. (Yellowstone Science)
The latest issue of Yellowstone Science includes an entertaining report and camera-trap pictures of a bear bathtub. National Geographic photographer Michael Nichols and Bozeman, Montana shooter Ronan Donovan documented the scene. Biologists discovered the bathtub when searching for a lost radio collar. (Yellowstone Science)

When researchers retrieved the sunken radio collar years ago they noted the pool to be about four by ten feet and up to three feet deep.

“Four, well-worn game trails, all with numerous bear tracks led in to and out of the pool of water,” the notes said. “It appeared that the radio-collared bear and other bears [including black bears] had been using the pool of water as a bathing hole all summer.”

“Years later, while working with the National Geographic Society to document the wildlife and ecological processes of the park, we had the opportunity to deploy some of the sophisticated high-tech, high-resolution remote cameras designed by National Geographic at the pond to find out more about how bears used it,” authors wrote in Yellowstone Science. “These ‘camera traps’ allowed us to document bear activity at the pool without disturbing the bears.”

National Geographic magazine is publishing a series of articles on America’s national parks this year, and an issue on Yellowstone is scheduled for May.

Bears played in the pool, brought their cubs along, and marked the area with scent. “It appears that bears enjoy a nice cold soak on a hot summer’s day as much as humans do,” the article says.

Since biologists found the bear bathtub, they have retrieved other collars from small, cold ponds. There may be a number of places in the park where bears go to bath, play and mark their scent.

“The bear bathtub is just one of the many special places in Yellowstone National Park that grizzly bears have helped us discover,” the authors said.

This article has been corrected to reflect the proper month National Geographic has scheduled an issue on Yellowstone. It is May, not March — Ed)


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Filed Under: Environment, Natural Resources, Places, Wide-open Wyoming

Angus M. Thuermer Jr.

About Angus M. Thuermer Jr.

Angus M. Thuermer Jr. is the natural resources reporter for WyoFile. He is a veteran Wyoming reporter and editor with more than 35 years experience in Wyoming. Contact him at [email protected] or (307) 690-5586. Follow Angus on Twitter at @AngusThuermer

Reader Interactions

Comments

  1. Russ Holding says

    March 19, 2017 at 8:03 am

    So the Seattle city gov , thinks it’s a good idea to install GRIZZLY’S in the North Cascades,? like they are not already HERE, duh, I have seen them up close. WE WILL SEE.

    • City: Bothell, WA.
    • State of Residence: Wyoming
    Reply
  2. Steve Campagnaro says

    January 13, 2016 at 9:53 am

    I think this shows that Grizzlies are far more sentient and intelligent than we know. Maybe even more so than Mr. Antelope

    Steve Campagnaro

    • City: cheyenne
    • State of Residence: Wyoming
    Reply
  3. Steve Campagnaro says

    January 13, 2016 at 9:35 am

    I think this shows that Grizzlies are far more sentient and intelligent than we know. Maybe even more so than Mr. Antelope.

    • City: cheyenne
    • State of Residence: Wyoming
    Reply
  4. Larry Antelope says

    January 5, 2016 at 6:22 pm

    Amazingly worthless.

    Larry Antelope

    • City: Missoula
    • State of Residence: Montana
    Reply
  5. Pamela Curry says

    January 5, 2016 at 2:23 pm

    This makes me sick. Encumbering wild animals with collars and cameras for frivolous and pseudo-scientific reasons is abusive and rampantly out of control. This mocks the founding principles of the national park system. The fact that wildlife biologists and photographers outnumber wildlife does not give them the right to exploit these creatures for profit, amusement and self-promotion.

    Pamela Curry

    • City: Pinedale
    • State of Residence: Wyoming
    Reply

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