2015 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 DateLocationDemographic Monitoring AreaLoss
61201561UNKCOY11-May-15Sage Crk, GNF-MTInsideProbable, natural, COY of radio-collared female lost between 5/14-5/18. Mortality date and location are approximate.
60201560FAdultSpring 2015South Fork Shoshone River, PR-WYInsideKnown, undetermined cause, remains of bear # 667 found in February 2016, estimated to have died spring 2015.
59201559FYearling11-Oct-15South Fork Shoshone River, PR-WYOutsideKnown, undetermined cause, #G209 found dead on 11/28, estimated mortality date is 11/26.
58201558  2015MTInsideKnown, under investigation.
57201557UNKCOY15-Nov-15Soldier Crk, PR-MTInsideProbable, human-caused, 3rd of 3 cubs of female killed in self-defense
56201556UNKCOY15-Nov-15Soldier Crk, PR-MTInsideProbable, human-caused, 2nd of 3 cubs of female killed in self-defense
55201555UNKCOY15-Nov-15Soldier Crk, PR-MTInsideProbable, human-caused, 1st of 3 cubs of female killed in self-defense
54201554FAdult15-Nov-15Soldier Crk, PR-MTInsideKnown, human-caused, hunting related self-defense kill of female with 3 cubs
53201553  2015MTInsideKnown, under investigation.
52201552FAdult28-Oct-15Big Crk, ST-MTInsideKnown, human-caused, hunting related defense of life.
51201551MAdult22-Oct-15Squaw Crk, PR-WYInsideKnown, human-caused, management removal for breaking into multiple buildings.
50201550FCOY18-Oct-15Taylor's Fork, PR-MTInsideKnown, human-caused, management live removal to zoo, 2nd of 2 cubs that broke into house with their mother and obtained food rewards.
49201549FCOY18-Oct-15Taylor's Fork, PR-MTInsideKnown, human-caused, management live removal to zoo, 1st of 2 cubs that broke into house with their mother and obtained food rewards.
48201548FAdult17-Oct-15Taylor's Fork, PR-MTInsideKnown, human-caused, management removal of female with 2 cubs for breaking into house and obtaining food rewards
47201547MSubadult17-Oct-15Sulphur Crk, BLM-WYOutsideKnown, human-caused, management removal for repeated nuisance activity in developed areas.
46201546  2015WYInsideKnown, under investigation.
45201545FAdult8-Oct-15Falls River, PR-IDOutsideKnown, human-caused, management removal for numerous conflicts in developed areas related to use of apples and habituated behavior.
44201544UNKUNK6-Oct-15Yellowstone River, PR-MTInsideProbable, human-caused, bear was hit by a vehicle, no carcass was recovered but damage to the vehicle and amount of blood on the highway suggest substantial injuries to the bear.
43201543MSubadult6-Oct-15Greybull River, PR-WYOutsideKnown, human-caused, management removal for frequenting developed and agricultural areas and possible apiary damage.
42201542MCOY30-Jul-15Canyon Crk, GNF-MTInsideProbable, human-caused, cub of radio-marked female lost between 7/24 and 8/5 after family was transported for cattle depredations. Mortality date is midpoint between last date cubs was seen and first date female was observed without her cub. Approximate mortality location is associated with telemetry location of female on 7/30.
41201541MAdult1-Oct-15Green River, BTNF-WYInsideKnown, human-caused, hunting related defense of life kill.
40201540UNKCOY1-Oct-15Lake Crk, SNF-WYInsideProbable, human-caused, 3rd of 3 cubs of female killed in self-defense.
39201539UNKCoy1-Oct-15Lake Crk, SNF-WYInsideProbable, human-caused, 2nd of 3 cubs of female killed in self-defense.
38201538MCOY1-Oct-15Lake Crk, SNF-WYInsideKnown, human-caused, 1st of 3 cubs of female killed in self-defense, cub was killed by female after she was shot.
37201537FAdult1-Oct-15Lake Crk, SNF-WYInsideKnown, human-caused, hunting related self-defense kill of female with 3 cubs.
36201536FAdult1-Oct-15East Fork Fiddle Crk, ST-MTOutsideKnown, human-caused, management removal for numerous cattle depredations
35201535MSubadult27-Sep-15Howard Crk, CTNF-IDInsideKnown, human-caused, road kill.
34201534MSubadult25-Sep-15Wagon Crk, BTNF-WYInsideKnown, human-caused, management removal for repeated livestock depredations.
33201533  2015WYInsideKnown, under investigation.
32201532MSubadult23-Sep-15Golf Crk, SNF-WYInsideKnown, human-caused, management removal for obtaining multiple anthropogenic food rewards.
31201531MAdult16-Sep-16Anderson Crk, SNF-WYInsideKnown, human-caused, mistaken identity kill by black bear hunter. Illegal take.
30201530MYearling21-Sep-15Yellowstone River, GNF-MTInsideKnown, human-caused, road kill.
29201529MAdult19-Sep-15Tosi Crk, PR-WYInsideKnown, human-caused, management removal for repeated cattle depredations.
28201528  2015WYInsideUnder investigation.
27201527FCOY11-Sep-15Dago Crk, BTNF-WYInsideKnown, human-caused, accidental mortality during handling
26201526MAdult10-Sep-15Henrys Lake Outlet, ST-IDInsideKnown, human-caused, management removal for repeated cattle depredations, property damage, and obtaining anthropogenic foods.
25201525UNKAdult23-Aug-15South Fork Shoshone River, PR-WYInsideKnown, natural, killed and consumed by another grizzly bear. Samples collected for DNA determination of sex.
24201524MAdult24-Aug-15Elk Crk, PR-IDInsideKnown, human-caused, management removal for repeated property damages and obtaining multiple food rewards.
23201523MAdult24-Aug-15South Fork Shoshone River, PR-WYInsideKnown, human-caused, management capture and removal, very old bear with extremely poor teeth and in poor condition killed domestic fowl.
22201522MAdult20-Aug-15Green River, PR-WYInsideKnown, human-caused, management removal for multiple property damages and anthropogenic food rewards.
21201521FAdult13-Aug-15Dry Crk, PR-WYOutsideKnown, human-caused, management removal for multiple anthropogenic and livestock conflicts.
20201520FCOY10-Aug-15Yellowstone River, YNPInsideKnown, human-caused, live removal to zoo, 2nd of 2 cubs whose mother was removed for human fatality.
19201519FCOY9-Aug-15Yellowstone River, YNPInsideKnown, human-caused, live removal to zoo, 1st of 2 cubs whose mother was removed for human fatality.
18201518FAdult8-Aug-15Yellowstone River, YNPInsideKnown, human-caused, management removal for human fatality. Captured on evening of 8/7 or morning of 8/8, was euthanized on 8/13 after DNA evidence linked bear to the fatality.
17201517MAdult11-Aug-15Sheridan Crk, SNF-WYInsideKnown, human-caused, management removal for repeated livestock depredations.
16201516FSubadult8-Aug-15Crooked Crk, PR-WYInsideKnown, human-caused, management removal for obtaining multiple food rewards and extreme habituation.
15201515MAdult25-Jul-15Gypsum Crk, BTNF-WYInsideKnown, human-caused, management removal for cattle depredations.
14201514MAdult23-Jul-15Horn Crk, BDNF-MTInsideKnown, human-caused, management removal for cattle depredations.
13201513MAdult12-Jul-15Gypsum Crk, BTNF-WYInsideKnown, human-caused, management removal for repeated cattle depredations.
12201512MAdult3-Jul-15Wiggins Fork, PR-WYOutsideKnown, human-caused, management removal for repeated cattle depredations.
11201511MSubadult27-Jun-15Wind River, PR-WYOutsideKnown, human-caused, management removal for obtaining numerous food rewards.
10201510MAdult27-Jun-15Tosi Crk, BTNF-WYInsideKnown, human-caused, management removal for repeated cattle depredations.
9201509UNKCOY16-May-15Dry Fork, SNF-WYInsideProbable, undetermined cause, 2nd of 2 cubs of radio-marked female found dead.
8201508UNKCOY16-May-15Dry Fork, SNF-WYInsideProbable, undetermined cause, 1st of 2 cubs of radio-marked female found dead.
7201507FAdult16-May-15Dry Fork, SNF-WYInsideKnown, undetermined cause, radio-marked female found dead, last seen alive on 5/11 with 2 cubs-of-the-year, 1st mortality signal on 5/21, approximate mortality date is midpoint between the 2 dates. Carcass had been scavenged. No evidence of cubs.
6201506FAdult25-Jun-15Blackrock Crk, BTNF-WYInsideKnown, human-caused, road kill.
5201505MSubadult22-May-15East Fork Blacktail Deer Crk, BLM-MTOutsideKnown, human-caused, mistaken identity kill by black bear hunter. Illegal take.
4201504MAdult22-May-15Grove Crk, PR-MTOutsideKnown, human-caused, management removal for cattle depredations.
3201503MAdult22-May-15Grove Crk, PR-MTOutsideKnown, human-caused, management removal for cattle depredations.
2201502  2015WYInsideKnown, under investigation.
1201501UNKCOY7-May-15Clearwater Crk, SNF-WYInsideKnown, natural, cub-of-the-year killed by another bear.
        
        
        
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 land; ST= state owned land; SNF = Shoshone National Forest; UNK = Unknown; WRIR = Wind River Indian Reservation; WYGF = Wyoming Game and Fish; YNP = Yellowstone National Park.