2011 Known and Probable Grizzly Bear Mortalities in the Greater Yellowstone Ecosystem

Data are preliminary and subject to change. Release of information will be limited for mortalities under investigation.
CountUniqueSexAge classKnown Mortality DateLocationLoss
44201144UNKCOY4-Aug-11Blackrock Crk, BTNF-WYProbable, natural, radioed female lost COY between 7/29 and 8/10. Location and mortality date are approximated.
43201143UNKCOY4-Aug-11Blackrock Crk, BTNF-WYProbable, natural, radioed female lost COY between 7/29 and 8/10. Location and mortality date are approximated.
42201142MAdult11-Nov-11South Fork Shoshone, State-WYKnown, human-caused, management removal after hunter was injured in state park, bear was old, had poor teeth, and was in poor condition for Nov
41201141FAdult6-Nov-11Wind River, PR-WYKnown, human-caused, management removal for obtaining multiple food rewards in the town of Dubois, WY
40201140FAdult30-Oct-11South Fork Shoshone, PR-WYKnown, human-caused, management removal for repeated nuisance activity and obtaining food rewards in a residential area
39201139 Subadult25-Oct-11South Fork Warm Springs Crk, SNFKnown, human-caused, self-defense kill by hunter
38201138FAdult11-AugLynx Crk, YNPKnown, undetermined cause, remains found by YNP staff, estimated time of death was August, DNA results indicated this was a female bear
37201137MAdult21-Oct-11Box Crk, BTNF-WYKnown, human-caused, management removal for repeated property damage and food rewards
36201136MAdult17-Oct-11Pine Crk, PR-MTKnown, human-caused, management removal for sheep depredation
35201135FAdult11-Oct-11Lamar River, YNPKnown, natural, was likely killed by another bear
34201134FAdult2-Oct-11North Fork Buffalo, BTNF-WYKnown, human-caused, hunting related, killed in self-defense, was accompanied by 2 yearlings
33201133MAdult5-Oct-11Davis Crk, PR-MTKnown, human-caused, mistaken identity kill by black bear hunter
32201132MCOY29-Sep-11Sour Crk, YNPKnown, human-caused, live management removal. COY of mother involved in 1 human fatality and known to be at the site of a second
31201131MCOY29-Sep-11Sour Crk, YNPKnown, human-caused, live management removal. COY of mother involved in 1 human fatality and known to be at the site of a second
30201130FAdult29-Sep-11Sour Crk, YNPKnown, human-caused, management removal of female with 2 COY. Bear was known to have caused the death of a hiker on 6 July in a defensive reaction to a surprise encounter. Bear was also known to be present (from DNA) at the site of a second human fatality on 25 August.
29201129MAdult20-Sep-11Rock Crk, CTNF-IDKnown, human-caused, appears to have died from a gunshot, bear had been dead approximately 1 week when reported by hunter. Mortality date is approximate
28201128MAdult20-Sep-11Wind River, SNF-WYKnown, human-caused, management removal for repeated cattle depredation
27201127FAdultSpr/Sum 2010Cabin Crk, YNPKnown, Undetermined cause, based on remains bear appeared to have died during the spring or early summer of 2010. DNA results indicated this was a female bear
26201126FAdult13-Sep-11South Fork Fish Crk, BTNF-WYKnown, human-caused, hunting related, defense of life by archery hunter, was accompanied by 1 large young
25201125MAdult11-Sep-11Sunlight Crk, PR-WYKnown, human-caused, management removal for livestock depredation and management history of property damage
24201124UNKCOY10-Sep-11Burnt Timber Crk, SNF-WYProbable, human-caused, 3rd of 3 COY whose mother was killed in self-defense by archery hunter
23201123UNKCOY10-Sep-11Burnt Timber Crk, SNF-WYProbable, human-caused, 2nd of 3 COY whose mother was killed in self-defense by archery hunter
22201122UNKCOY10-Sep-11Burnt Timber Crk, SNF-WYProbable, human-caused, 1st of 3 COY whose mother was killed in self-defense by archery hunter
21201121FAdult10-Sep-11Burnt Timber Crk, SNF-WYKnown, human-caused, hunting related, defense of life by archery hunter, was accompanied by 3 COY
20201120FAdult7-Sep-11Fales Fork, SNF-WYKnown, human-caused, hunting related, defense of life by archery hunter, was accompanied by 3 yearlings
19201119MAdult9-Sep-11Bear Crk, PR-MTKnown, human-caused, management removal for repeated cattle depredation
18201118FAdult6-SepPerkins Crk, BDNF-MTKnown, human-caused, hunting related defense of life by 2 archery hunters, female was accompanied by 2 large young, likely yearlings or 2 year olds.
17201117MAdult28-Aug-11Green River, BTNF-WYKnown, human-caused, management removal for repeated cattle depredation
16201116UNKCOY25-Jun-11Pickett Crk, BLM-WYKnown, undetermined cause, remains of a COY that had been dead several months found and reported. Date of mortality is approximate.
15201115MAdult24-Aug-11Strawberry Crk, BTNF-WYKnown, human-caused, management removal for repeated cattle depredation
14201114FCOY8-Aug-11South Fork Shoshone, PR-WYKnown, human-caused, management live removal to Cleveland Metro Zoo, was accompanying mother when she obtained anthropogenic foods on numerous occasions
13201113MCOY8-Aug-11South Fork Shoshone, PR-WYKnown, human-caused, management live removal to Cleveland Metro Zoo, was accompanying mother when she obtained anthropogenic foods on numerous occasions
12201112FAdult7-Aug-11South Fork Shoshone, PR-WYKnown, human-caused, management removal for obtaining numerous food rewards at private residences, was accompanied by 2 COY
11201111FAdult15-Oct-10Horse Crk, SNF-WYKnown, undetermined cause, last active location for bear #558 was 10/7, and first mortality signal was 10/19, mortality data is approximate.
10201110MSubadult1-Aug-11Incinerator Crk, YNPKnown, human-caused, management removal for numerous nuisance activities and food rewards associated with a campground escalating to aggressive behavior towards humans to obtain food
9201109FAdult27-Jul-11Wagon Crk, BTNF-WYKnown, human-caused, management removal for cattle depredations and prior management history for anthropogenic foods
8201108FAdult18-Jul-11Buttermilk Crk, PR-MTKnown, human-caused, management removal for repeated food rewards in a campground and at residences
7201107MAdult16-Jul-11Fish Crk, BTNF-WYKnown, human-caused, management removal for repeated sheep and cattle depredation
6201106FAdult11-Jul-11Skull Crk, WYKnown, human-caused, road kill
5201105FAdult24-May-11Four Bear Crk, ST-WYKnown, human-caused, shot and left. Date of death is approximate. DNA results indicated bear was a female.
4201104MAdult2-Jun-11Tangle Crk, YNPKnown, human-caused, road kill
3201103MAdult28-May-11North Fork Shoshone, SNFKnown, human-caused, shot and left.
2201102MSubadultSpring 2011Horse Crk, ST-WYKnown, human-caused, likely shot.
1201101MAdult7-May-11Grass Crk, ST-WYKnown, human-caused, management removal for breaking into cabin.
Known mortality - a carcass is in hand; Probable mortality - evidence strongly suggests a mortality has occurred but no carcass is recovered. Abbreviations: BOR = Bureau of Reclamation; BLM = Bureau of Land Management; BTNF = Bridger-Teton National Forest; COY = cub-of-the-year; CTNF = Caribou-Targhee National Forest; GNF = Gallatin National Forest; GTNP = Grand Teton National Park; IDFG = Idaho Fish and Game; MTFWP = Montana Fish, Wildlife and Parks; PR = private; SNF = Shoshone National Forest; UNK = Unknown; WRIR = Wind River Indian Reservation; WYGF = Wyoming Game and Fish; YNP = Yellowstone National Park.