2017 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  
56201756UnkCub8/26/2017Goose Crk, CGNF-MTInsideProbable, natural, cub of radio-collared female lost between 8/12 and 9/11. Mortality date and location are approximate.  
55201755UnkCub5/28/2017Buffalo Fork, BTNF-WYInsideProbable, natural, cub of radio-collared female lost between 5/8 and 6/19. Mortality date and location are approximate.  
54201754UnkCub5/16/2017Butte Crk, BLM-MTInsideProbable, natural, cub of radio-collared female lost between 5/10 and 5/23. Mortality date and location are approximate.  
53201753UnkCub4/30/2017Lion Crk, CGNF-MTInsideProbable, natural, cub of radio-collared female lost between 4/22 and 5/10. Mortality date and location are approximate.  
52201752  2017WYOutsideKnown, under investigation.  
51201751MAdult11/2/2017Carter Crk, PR-WYOutsideKnown, human-caused, management capture and removal for property damage and obtaining food rewards.  
50201750  2017WYInsideProbable, under investigation.  
49201749  2017WYInsideProbable, under investigation.  
48201748  2017WYInsideKnown, under investigation.  
47201747  2017WYInsideProbable, under investigation.  
46201746  2017WYInsideProbable, under investigation.  
45201745  2017WYInsideProbable, under investigation.  
44201744  2017WYInsideKnown, under investigation.  
43201743  2017WYInsideKnown, under investigation.  
42201742  2017WYInsideKnown, under investigation.  
41201741UnkCub10/22/2017Duck Crk, PR-MTInsideProbable, human-caused, 3rd of 3 cubs of female killed in self-defense at residence.  
40201740UnkCub10/22/2017Duck Crk, PR-MTInsideProbable, human-caused, 2nd of 3 cubs of female killed in self-defense at residence.  
39201739UnkCub10/22/2017Duck Crk, PR-MTInsideProbable, human-caused,1st of 3 cubs of female killed in self-defense at residence.  
38201738FAdult10/22/2017Duck Crk, PR-MTInsideKnown, human-caused, self-defense kill of female with 3 cubs at residence  
37201737  2017WYInsideKnown, under investigation.  
36201736  2017WYInsideKnown, under investigation.  
35201735MAdult10/14/2017Grayling Crk, PR-MTInsideKnown, human-caused, management capture and removal for breaking into multiple buildings and obtaining food rewards.  
34201734  2017WYInsideKnown, under investigation.  
33201733  2017WYInsideKnown, under investigation.  
32201732MSubadult10/62017Bearver Crk, CGNF-MTInsideKnown,human-caused, hunting related, self-defense  
31201731UnkCub9/25/2017Hebgen Ridge, CGNF-MTInsideProbable, human-caused, 3rd of 3 cubs of female killed in hunting related self-defense.  
30201730UnkCub9/25/2017Hebgen Ridge, CGNF-MTInsideProbable, human-caused, 2nd of 3 cubs of female killed in hunting related self-defense.  
29201729UnkCub9/25/2017Hebgen Ridge, CGNF-MTInsideProbable, human-caused, 1st of 3 cubs of female killed in hunting related self-defense.  
28201728FAdult9/25/2017Hebgen Ridge, CGNF-MTInsideKnown, human-caused, hunting related, self-defense kill of female with 3 cubs.  
27201727MAdult9/24/2017Green River, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
26201726MSubadult9/12/2017Mosquito Lake, BTNF-WYInsideKnown, human-caused, management capture and removal for repeated cattle depredations.  
25201725  2017WYInsideKnown, under investigation.  
24201724UnkAdult2014 or earlierPapoose Crk, SNF-WYInsideKnown, undetermined cause, old skull found, likely died prior to 2015.  
23201723FSubadult9/92017Greybull River, PR-WYOutsideKnown, human-caused, management capture and removal for frequenting developed areas and habituated behavior.  
22201722MSubadult9/8/2017Heart Lake, YNPInsideKnown, human-caused, management capture and removal for bold behavior towards humans, repeated property damages, and obtaining multiple food rewards.  
21201721MAdult42977Antelope Crk, BDNF-MTInsideKnown, human-caused, self-defense kill at site of bear killed calf.   
20201720MAdult8/21/2017West Fork Madison River, BDNFInsideKnown, human-caused, management removal for cattle depredations.  
19201719MYearling8/9/2017Camp Crk, SNF-WYInsideKnown, human-caused, management capture and live removal for habituation and bold behavior.  
18201718MYearling8/10/2017Camp Crk, SNF-WYInsideKnown, human-caused, management capture and live removal for habituation and bold behavior.  
17201717FAdult7/30/2017Buck Crk, PR-WYOutsideKnown, natural, remains of adult female found at cow carcass, likely killed and consumed by another bear.  
16201716MSubadult8/5/2017Gypsum Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
15201715  2017WYInsideKnown, under investigation.  
14201714UnkCub8/2/2017Beartooth Crk, SNF-WYInsideKnown, natural, remains of cub found at bear at cow carcass, killed and consumed by another bear  
13201713MAdult8/2/2017North Fork Owl Crk, PR-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
12201712MAdult7/21/2017Green River, BTNF-WYInsideKnown, human-caused, management capture and removal for livestock depredations.  
11201711MYearling7/15/2017Gallatin River, US191-MTInsideKnown, human-caused, road kill.   
10201710MAdult7/9/2017West Goosewing Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
9201709MAdultSpring 2017Yellowstone River, MTInsideKnown, undetermined cause, found along bank of Yellowstone River, likely died during late winter or early spring 2017.  
8201708FAdult5/4/2017Alum Crk, YNPInsideKnown, natural, radio-marked female died between 4/29 and 5/10, specific mechanism of mortality unknown.   
7201707MSubadult5/26/2017Wiggins Fork, SNF-WYInsideKnown, human-caused, road kill.   
6201706  2017WYInsideKnown, under investigation.  
5201705MAdult42875Sheep Crk, CGNF-MTInsideKnown, human-cuased, mistaken identity kill by black bear hunter.  
4201704  2017WYInsideKnown, under investigation.  
3201703MAdult4/25/2017Yellowstone River, US89-MTInsideKnown, human-caused, road kill on US89.  
2201702MSubadult4/12/2017Dell Crk, PR-WYInsideKnown, human-caused, management capture and removal for property damage, entering structures and obtaining food rewards.  
1201701MAdult3/24/2017Greybull River, PR-WYOutsideKnown, human-caused, management capture and removal for livestock depredations.  
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.