Gray Wolves in the Northern Rocky Mountains
Mountain-Prairie Region

Wyoming Gray Wolf Recovery Status Report

From: Mike Jimenez, NRM Wolf Management & Science Coordinator, Jackson, WY
Subject: Status of Gray Wolf Management in Wyoming and the NRM – July 2012

Web Address – USFWS reports (past status and annual reports) can be viewed at http://westerngraywolf.fws.gov .   All status and annual reports are government property and can be used for any purpose.  Please distribute as you see fit. 

2011 Annual Report
The 2011 Interagency Annual Wolf (Canis lupus) Report for the NRM DPS is available on-line at http://westerngraywolf.fws.gov .  The annual wolf report is composed of seven sections: 1) Montana; 2) Wyoming; 3) Idaho; 4) Washington; 5) Oregon; 6) USFWS overview of funding, litigation, contact information, and relevant publications; and 7) tables and figures of wolf population statistics and wolf depredations in the NRM DPS.  

Information about wolves in other NRM states
Idaho at: http://fishandgame.idaho.gov/public/wildlife/wolves/.
Montana at: http://fwp.mt.gov/fishAndWildlife/management/wolf/
Oregon at:  www.dfw.state.or.us/wolves
Washington at: http://wdfw.wa.gov/conservation/gray_wolf/ 

MONITORING
Yellowstone National Park – Park biologists have confirmed 5 packs that have produced pups in 2012.

Wyoming (outside YNP)
Biologists have confirmed 21 packs that have produced pups this year, including: 1) Absaroka,  2) Black Rock, 3) Dog Creek*,  4) Carter Mtn,  5) Elk Fork, 6) East Fork, 7) Greybull River,
 8) Gooseberry,  9) Hoodoo,  10) Horse Creek,  11) Huckleberry,  12) Ishawooa,  13) Lava Mtn, 14) Lower Gros Ventre,  15) Pahaska,  16) Phantom Springs,  17) Pinnacle Peak,  18) Prospect*, 19) Spring Mtn*,  20) Upper Gros Ventre, and 21) Washakie.

Field crews are investigating the breeding status of other known packs including: Beartooth, Chagrin, Green River*, Owl Creek, Pacific Creek, Rim, and South Fork.
 
* Indicates ongoing livestock depredation control actions.

Figure 1. Wolf population in WY: 2000 - 2011.

 - wolf population in wyoming 2000 - 2011

Table 1. Total wolf mortality in WY from 2003 through July 31, 2012.

Cause of Mortality 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Total
Control 18 29 41 44 63 46 31 40 36 24 372
Natural 3 0 3 1 2 3 2 2 3 2 21
Under Investigation 5 1 5 8 5 8 0 8 2 2 44
Unknown 1 0 0 1 2 8 7 4 5 0 28
Other 0 6 2 5 3 14 0 4 5 4 43
Total 27 36 51 59 75 79 40 58 51 32 508

 

Table 2: Confirmed livestock depredations in WY from 2003 through July 31, 2012.

           Year 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Total
Cattle 34 75 54 123 55 41 20 26 35  15^ 478
Sheep 7 18 27 38 16 26 195 33 30    46^^ 436
Other 2 10 1 0 1 0 0 1   1* 0 16
Dogs 0 2 1 1 2 0 7 0 1   3** 17
Total 43 105 83 162 74 67 222 60 67 64 947

* A horse broke its leg and had to be euthanized after being chased by wolves in a pasture on privateproperty. Six additional horses, 3 calves, and 1 dog were injured in 2011.
** One dog was also injured by wolves but survived.
^ At least 9 additional calves were injured by wolves.
^^At least 4 additional sheep were injured by wolves.

FURTHER INFORMATION To request an investigation of livestock injured or killed by wolves in Wyoming, please contact the U.S. Department of Agriculture Wildlife Services at (307)261-5336. For additional information, please contact: Mike Jimenez at (307)330-5631 or (307)733-7096 or mike_jimenez@fws.gov

 

Last updated: November 8, 2012