Gray Wolves in the Northern Rocky Mountains
Mountain-Prairie Region

Wyoming Gray Wolf Recovery Status Report

From:               USFWS Wyoming Wolf Recovery Project Leader, Jackson, WY

Subject:            Status of Gray Wolf Management in Wyoming and the NRM


WYOMING WOLF WEEKLY- Jan 10, 2010 through Feb. 4, 2011

Web Address – USFWS reports (past weekly and annual reports) can be viewed at .   All weekly and annual reports are government property and can be used for any purpose.  Please distribute as you see fit.

2010 Annual Report
The 2010 Interagency Annual Wolf (Canis lupus) Report for the NRM DPS will be available in early March 2011 on-line at .  The Montana Fish, Wildlife and Parks section of the annual wolf report will also available on-line on its websites at  The annual wolf report is composed of five Sections: 1) Montana; 2) Wyoming; 3) Idaho; 4) USFWS overview of dispersal, funding, litigation, and relevant publications; and 5) Tables and Figures of wolf population statistics and wolf depredations. 

Information about Oregon wolves can be viewed at:

Information about Washington wolves can be viewed at:

Litigation: On January 28, 2011, the Missoula Federal District Court (Defenders of Wildlife et al v. Hall et al, 9:08-cv-00014-DWM) issued an order that vacated the February 4, 2010 oral arguments in a case over a provision of the 2008 experimental rules that allowed states and tribes to remove wolves in areas where wolf predation was having an unacceptable impact on a ungulate herd.  The court also ordered the Government and environmental Plaintiffs to supply information to the court showing why the court has any further jurisdiction in the case because there might not be a valid 10(j) rule.  The Court asked for information whether a 10(j) area could still exist since the experimental population wolves and the endangered wolves population now mix and interbreed.  Briefs are due to the Court February 22, 2011.

During the last week of January 2011, the YNP wolf project captured and radio collared 10 wolves. Winter capture efforts will continue in YNP through February.

On 1/28/11, the USFWS captured and radio collared 9 wolves in the Jackson area and will continue capture/collaring efforts throughout the NW portion of the state during February and March. 

Wyoming: No depredations were reported in January 2011. 

The USFWS and Grand Teton National Park began the 2nd season of a collaborative winter wolf predation study in early January 2011.  We are monitoring wolves in the north end of Grand Teton National Park and the surrounding national forest to investigate wolf predation patterns in areas with relatively low winter elk density.  We use radio telemetry to locate wolves daily and back track wolves to locate carcasses of ungulates that were killed by wolves. 

Preliminary results:
In January 2011, we located 12 carcasses (known and probable wolf-kills): 8 elk (Cervus elaphus), 3 moose (Alces alces), and 1 mule deer (Odocoileus hemionus) or white-tailed deer (Odocoileus virginianus).  Our winter predation study will continue into April.

Last winter in 2010, we located 38 carcasses of ungulates killed by wolves: 25 (66%) elk and 13 (34%) moose. Sex and age composition of prey was 29% calves, 17% cows, and 54% bulls for elk, and 8% calves, 67% cows, and 25% bulls for moose. Mean age of wolf-killed ungulates was 4.2 years (range: 0-18) for elk and 6.0 years (range: 1-10) for moose, respectively.

Nothing to report at this time. 

Nothing to report at this time.

To request an investigation of livestock injured or killed by wolves, please contact the U.S. Dept. of Agriculture Wildlife Services at (307)261-5336.

For additional information, please contact:
Ed Bangs (Helena, MT) (406)449-5225 x204 or Ed_Bangs@FWS.GOV
Mike Jimenez (Jackson) (307)733-7096 or (307)330-5631 or Mike_Jimenez@FWS.GOV
Scott Becker (Cody) (307)527-8916 or (307)699-3411 or Scott_Becker@FWS.GOV

Last updated: November 8, 2012