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- June 19 through July 23, 2010

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.

2009 Annual Report
The 2009 Interagency Annual Wolf (Canis lupus) Report for the NRM DPS in 2009 can be viewed on-line at .  The Idaho and Montana state sections of the annual wolf report are also available on-line at the websites for Montana Fish, Wildlife and Parks and Idaho Department of Fish and Game  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:

Litigation Status
Wyoming: Oral arguments were heard in federal court in Cheyenne, WY on January 29 to address the state of Wyoming’s request that the USFWS accept the Wyoming Wolf Management Plan. A decision from Judge Allen Johnson is pending.

Northern Rocky Mountains: Oral arguments were heard in federal court in Missoula, MT. on June 15. The court will address the Service’s approach of conferring ESA protections to a “significant portion of the range” of a species, as opposed to designating the entire species as a threatened or endangered species. Judge Malloy said he would issue a decision as soon as possible. 

Wyoming: At least 15 packs have denned in Wyoming (outside YNP) in 2010, including: Absaroka, Beartooth, Chagrin River, East Fork, Elk Fork Creek, Greybull River, Green River, Hoodoo, Huckleberry, Pacific Creek, Phantom Springs, Pinnacle Peak, Sunlight, Owl Creek, and Wiggins Fork.



Figure 1. Wolf population growth in Wyoming (outside YNP) 2000-2009.                                test

Table 1. Total wolf mortality in Wyoming (outside YNP) from 2003-2010.


Wyoming: We continue to manage wolf population growth and wolf distribution to minimize chronic loss of livestock from wolves and promote wolf conservation by maintaining the Wyoming wolf population (outside YNP) well above recovery objectives.
Sheridan County: On 7/15/10, Wyoming Wildlife Services confirmed that 1-2 wolves killed a total of 18 lambs and 1 ewe on public land in the Big Horn Mountains, approx. 15 miles south of the Wyoming/Montana state border. The depredations first occurred on 7/12/10, with additional depredations occurring on 7/13/10. The herders’ camp is located onsite where sheep are grazing. Three guard dogs and several herding dogs are being used. On 7/19/10, Wildlife Services confirmed another 5 lambs (weighing approx. 65-70 lbs) were killed by wolves. The USFWS flew a telemetry flight in the area but did not locate any known dispersing or missing radio collared wolves. Control is ongoing to remove the depredating wolves.

Sublette County:  On 3/10/10, Wildlife Services confirmed that a calf was killed by wolves from the Black Butte Pack NW of Pinedale, WY. Control efforts were completed when 3 wolves were removed. On 4/18/10, WY Wildlife Services verified a foal was killed and a yearling horse was injured by wolves from the Black Butte Pack. Control efforts began again to remove the remaining 2 wolves, but were unsuccessful. On 7/21/10, Wildlife Services confirmed that another calf was killed by wolves in the same area. Control efforts are ongoing to remove these 2 wolves.


Table 2. Confirmed livestock depredations and control actions in WY from 2003 - 2010.

*One foal was killed by wolves (recorded as confirmed), 2 horses were chased by wolves and injured when they were run through a fence (recorded as 1 confirmed and 1 probable), and 1 horse was chased by wolves and broke its leg when it was run over a cattle guard (recorded as probable). All 3 injured horses had to be euthanized.

Utah: In early July 2010 USDA WS and Utah DNR confirmed a wolf or wolves had depredated on both cattle and sheep on USDA Forest Service grazing allotments in the area of Utah where wolves are delisted northeast of Coalville, UT.  UT DNR authorized lethal removal of that wolf or wolves.  In addition WS and UT DNR confirmed that a probably different wolf had killed 2 calves in a single incident south of the highway where wolves remain listed in Utah.  No control was authorized by the Service for that area.  No other wolves or depredations have been reported in that area since that time.  On July 23, 2010 USDA WS trapped and shot an 80lb black female that was not lactating, where the early cattle and sheep depredations had occurred in the delisted area of Utah.  UT DNR, WS, and the Service continue to closely monitor this situation.     

Nothing to report at this time.

Law Enforcement and Related Activities   
Nothing to report at this time.

Outreach and Education
Nothing to report at this time.

Further Information
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 (406)449-5225 x204 or Ed_Bangs@FWS.GOV
Mike Jimenez (307)733-7096 or (307)330-5631 or  Mike_Jimenez@FWS.GOV

Last updated: November 8, 2012