The Yellowstone Grizzly Project
  • Welcome
  • Home
  • About
  • Submit sightings
  • Family Tracker
  • Publications & Research
  • Natural Life History
  • Cementum Age Determination for Grizzly Bears
  • Nutrition & Diet
  • Radio Telemetry and Wildlife Tracking
  • Chemical Immobilization and Wildlife Handling
  • Infectious Disease in Bears
  • Effects of Wildfire on Grizzly Bears: Yellowstone 1988
  • Mortality Database
  • Photo gallery
  • Contact
The Greater Yellowstone

GRIZZLY PROJECT

Facebook

"A Grizzly Trilogy:" Three grizzly life histories linked by lineage

1/30/2020

11 Comments

 
Picture
Photo: Grizzly 179 lies immobilized following being captured. Photo courtesy: Mark Gocke
​Grizzly 79 was first captured and marked by the Interagency Grizzly Bear Study Team in 1981 at seven-years-old. Grizzly 79 was a so-called ‘frequent flyer’ in the northern section of Yellowstone National Park, well known and recognized by park officials and the local community of Gardiner, MT. Over the next decade, she would remain close and exhibit high fidelity to her home range. She was relocated numerous times, only to find her way back.

Nearly 29-years ago, grizzly 79 found herself in the town of Gardiner, Montana, with her two, yearling cubs (179 & 182). On August 21, 1990, Grizzly 79 and her cubs (179, 182) were trapped for management reasons and relocated. Grizzly 79 was relocated to the remote southeast location of Thorofare, YNP. In contrast, her two yearling cubs (179 & 182) were relocated to Glade Creek, now located in the present-day John D. Rockefeller Memorial Parkway (JDRMP).

Grizzly 79 was able to navigate Yellowstone and its surrounding communities, without ever being removed. It is remarkable, however, that she was captured 8-times during her life, 7-times for management reasons. Unfortunately, Grizzly 79 was shot and killed by a hunter who claimed self-defense in 1996. Never once in her 22-years in the ecosystem did researchers or community members record an aggressive encounter between her and people. During her nearly two decades in the ecosystem, grizzly 79 was responsible for siring approximately five litters of cubs (grizzly 179 had six litters in her life, and grizzly 182 was known to have one litter).
Picture
​August 1990 marked the beginning for these two young grizzlies, now on their own for the first time. Grizzly 179 took up residence in the region in and around the eastern extent of Grand Teton National Park, while her sibling grizzly 182, headed north to the area around Heart Lake, YNP. Both siblings were female, and both bears had their first litters of cubs by age 7. Grizzly 179, unlike her sibling, chose to share her life more intimately with biologists and researchers. Since 1990, grizzly 179 was captured over half a dozen times, her sibling 182 only twice. Grizzly bears with such extensive life histories as 79, 179, and 182 have contributed tremendous amounts of data that help us better understand the species, their biology, and the issues they currently face. Our ability to monitor daily, seasonal and annual movements & activities of these bears is undoubtedly a major contributing factor to their overall recovery and conservation success of the present day.
Picture
Picture
Works Cited
  1. Knight, R.R., B.M. Blanchard, and D.J. Mattson. 1991. Yellowstone grizzly bear investigations: annual report of the Interagency Study Team, 1990. National Park Service, Bozeman, Montana.
  2. Knight, R.R., and B.M. Blanchard. 1994. Yellowstone grizzly bear investigations: annual report of the Interagency Study Team, 1993. National Park Service, Bozeman, Montana.
  3. Knight, R.R., and B.M. Blanchard. 1995. Yellowstone grizzly bear investigations: annual report of the Interagency Study Team, 1994. National Biological Service, Bozeman, Montana
  4. Knight, R. R., and B. M. Blanchard. 1996. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 1995. National Biological Service, Bozeman, Montana.
  5. Haroldson, M. A., and M. Ternent. 2000. Bear Monitoring and Population Trend. Pages 3-8 in C. C. Schwartz and M. A. Haroldson, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 1999. U.S. Geological Survey, Bozeman, Montana.
  6. Haroldson, M. A., and R. Grogan. 2001. Bear Monitoring and Population Trend. Pages 3-10 in C. C. Schwartz and M. A. Haroldson, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 2000. U.S. Geological Survey, Bozeman, MT.
  7. Haroldson, M. A., Dickinson, C., and K. Frey. 2002. Grizzly Bear Capturing, Collaring, and Monitoring. Pages 4-11 in C. C. Schwartz and M. A. Haroldson, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Study Team, 2001. U.S. Geological Survey, Bozeman, Montana.
  8. Haroldson, M. A., Dickinson, C., and D.D. Bjornlie. 2008. Bear Monitoring and Population Trend. Pages 4-8 in C. C. Schwartz, M. A. Haroldson, and K. West, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Study Team, 2007. U.S. Geological Survey, Bozeman, Montana.
  9. Haroldson, M. A., Dickinson, C., and D.D. Bjornlie. 2013. Bear Monitoring and Population Trend. Pages 5-10 in F.T. van Manen, M.A. Haroldson, and K. West, editors. Yellowstone grizzly bear investigations: annual report of the Interagency Grizzly Bear Study Team, 2012. U.S. Geological Survey, Bozeman, Montana, USA.
11 Comments
    Picture

    Author

    Tyler Brasington is a native born and raised Pennsylvanian, yet proud current Wisconsin resident. He graduated from the University of Wisconsin-Whitewater with a B.S. in Environmental Science. Currently, Tyler is pursuing his masters in Natural Resources with the University of Wisconsin-Stevens Point. He has worked in Yellowstone National Park under the guidance and supervision of Dr. George Clokey and Dr. Jim Halfpenny. 

    ​Tyler is a current member of the International Association for Bear Research and Management, The Wildlife Society, and Polar Bears International.

    Research and academic work has focused on different aspects of grizzly bear ecology and behavior. Ongoing research: spatial ecology and identification of females with cubs, and integrated approaches to monitoring grizzlies  in Yellowstone and Grand Teton National Parks. Side projects include: selected life histories of park bears, bear viewing etiquette and responses. 


    Currently Tyler has worked as a Park Ranger with the Bear Management Office in Grand Teton National Park (GTNP). He previously worked as a Biological Science Technician with the US Geological Survey, National Wildlife Health Center and as a Biological Science Technician (Fisheries/AIS) in GTNP, and served as a volunteer, assisting the Bear Management Office in Yellowstone National Park.

    Disclaimer: The information and views expressed on this page do not necessarily represent the views of the Department of Interior, US Geological Survey, National Park Service or the United States Government.
    The Greater Yellowstone Grizzly Project
    www.yellowstonegrizzlyproject.org

    © 2021 Tyler Brasington

    All rights reserved. No portion of this website may be reproduced in any form without permission from the publisher, or appropriate authors, except as permitted by U.S. copyright law.
    ​
    ​For permissions contact:

    yellowstonegrizzlyproject@gmail.com
    View my profile on LinkedIn

    Archives

    February 2021
    March 2020
    January 2020
    July 2019
    June 2019
    May 2019
    March 2019
    January 2019
    November 2018
    July 2018
    June 2018
    May 2018
    March 2018
    February 2018
    December 2017
    November 2017
    October 2017
    August 2017
    June 2017
    April 2017
    January 2017
    December 2016
    November 2016

    Categories

    All

    RSS Feed

Proudly powered by Weebly
  • Welcome
  • Home
  • About
  • Submit sightings
  • Family Tracker
  • Publications & Research
  • Natural Life History
  • Cementum Age Determination for Grizzly Bears
  • Nutrition & Diet
  • Radio Telemetry and Wildlife Tracking
  • Chemical Immobilization and Wildlife Handling
  • Infectious Disease in Bears
  • Effects of Wildfire on Grizzly Bears: Yellowstone 1988
  • Mortality Database
  • Photo gallery
  • Contact