Northern Rocky Mountain Science Center (NOROCK)


We hope you will enjoy learning about the variety of ecosystems and species we are studying throughout the United States. We are part of the Northwest Region of the USGS and our scientists work on diverse issues such as wildlife health, invasive species, climate, endangered species and much more. Click on Science to begin exploring the places we go and the species and landscapes we study.

New Map!

New Map!

Animated image showing grizzly bear range expansion in GYE: 1990-2016.

Where Bears Roam

NOROCK in the News

NOROCK in the News

Recent news and media featuring NOROCK Science. Click below for our most recent features.

Mapping Hucks!


An American pika collects grass and flowers to stockpile its winter food supplies.
July 12, 2017

A new study by the U.S. Geological Survey and its partners has identified situations and conditions where some animals display behavioral flexibility – the ability to rapidly change behavior in response to short – or long-term environmental changes such as climate variability. 

A mother grizzly bear and her cub in the Greater Yellowstone Ecosystem.
July 5, 2017

From the journals of Lewis & Clark, April 13, 1805 (in the vicinity of Pouch Point Recreation Area - 16 miles south of New Town, North Dakota):

Ready to remove from the trap
July 3, 2017

As part of ongoing efforts required under the Endangered Species Act to monitor the population of grizzly bears in the Yellowstone Ecosystem, the Interagency Grizzly Bear Study Team (IGBST) traps and monitors grizzly bears for research and monitoring purposes. Here you will find trapping notifications for the 2017 field season.


Year Published: 2017

Behavioral flexibility as a mechanism for coping with climate change

Of the primary responses to contemporary climate change – “move, adapt, acclimate, or die” – that are available to organisms, “acclimate” may be effectively achieved through behavioral modification. Behavioral flexibility allows animals to rapidly cope with changing environmental conditions, and behavior represents an important component of a...

Beever, Erik; Hall, L. Embere; Varner, Johanna; Loosen, Anne E.; Dunham, Jason; Gahl, Megan K.; Smith, Felisa A.; Lawler, Joshua J.

Year Published: 2017

Yellowstone grizzly bears: Ecology and conservation of an icon of wildness

No abstract available.

White, P.J.; Gunther, Kerry A.; van Manen, Frank T.
Yellowstone grizzly bears : ecology and conservation of an icon of wildness / editors, P.J. White, Kerry A. Gunther, and Frank T. van Manen ; contributing authors, Daniel D. Bjornlie [and thirteen others] ; managing editor, Jennifer A. Jerrett. Yellowstone National Park, [Wyoming] : National Park Service, Yellowstone National Park ; [Bozeman, Montana] : U.S. Geological Survey, Northern Rocky Mountain Science Center, 2017.

Year Published: 2017

Shifting brucellosis risk in livestock coincides with spreading seroprevalence in elk

Tracking and preventing the spillover of disease from wildlife to livestock can be difficult when rare outbreaks occur across large landscapes. In these cases, broad scale ecological studies could help identify risk factors and patterns of risk to inform management and reduce incidence of disease. Between 2002 and 2014, 21 livestock herds in the...

Brennan, Angela; Cross, Paul C.; Portacci, Katie; Scurlock, Brandon M.; Edwards, William H.
Brennan, A, PC Cross, K Portacci, BM Scurlock, WH Edwards. Accepted. Shifting brucellosis risk in livestock coincides with spreading seroprevalence in elk. PLoS ONE.