2018 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  
42201842MSubadult9/6/2018North Fork Shoshone, SNFInsideKnown, human-caused, vehicle collision.  
41201841FCub9/6/2018Paint Crk, PR-WYOutsideKnown, human-caused, handling mortality. Management capture with mother and siblings for cattle depredations.  
40201840MSubadult9/6/2018Fish Crk, BTNFInsideKnown, human-caused, management capture and removal for cattle depredations.  
39201839MAdult9/4/2018South Fork Owl Crk, PR-WYOutsideKnown, human-caused, management capture and removal for cattle depredations.  
38201838MAdult9/3/2018North Fork Shoshone, PR-WYInsideKnown, human-caused, management capture and removal for property damage and livestock depredations.  
37201837  2018WYOutsideKnown. Under investigation.  
36201836MSubadult9/1/2018South Fork Shoshone, PR-WYOutsideKnown, human-caused, management capture and removal for repeated nuisance activity at residences and property damage.  
35201835MAdult8/30/2018Reader Crk, PR-MTInsideKnown, human-caused, management capture and removal for cattle depredations.  
34201834MYearling8/14/2018Henrys Fork, PR-IDInsideKnown, human-caused, management live removal for bold behavior towards humans at campgrounds and obtaining anthropogenic food rewards at numerous residences.  
33201833FAdult8/9/2018JK Crk, WRIROutsideKnown, human-caused, management capture and removal for cattle depredations.  
32201832MAdult8/13/2018Wagon Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
31201831  2018MTInsideUnder investigation.  
30201830MAdult2016Buffalo Fork, BTNFInsideKnown, undetermined cause, skeletal remains found including skull. Skull characteristics indicated likely adult male. Estimated to have died in 2016.   
29201829MAdult8/4/2018Paint Crk, PR-WYOutsideKnown, human-caused, management capture and removal for cattle depredations.  
28201828MAdult8/5/2018Gypsum Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
27201827MAdult8/1/2018Gypsum Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
26201826UnkAdult7/19/2018Yellowstone River, BTNF-WYInsideKnown, natural, killed and consumed by another bear(s).  
25201825FAdult7/25/2018Gypsum Crk, BTNF-WYInsideKnown, human-caused, management removal for multiple cattle depredations.  
24201824FSubadult5/15/2018Coulter Crk, BTNF-WYInsideKnown, natural, likely killed by another bear.  
23201823MSubadult7/20/2018Mill Crk, CTNF-IDInsideKnown, human-caused, management removal for bold behavior and obtaining unsecured anthropogenic food reward.  
22201822MAdult7/13/2018Mosquito Lake, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
21201821MAdult7/13/2018Wagon Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
20201820MAdult7/8/2018Crow Crk, BTNF-WYInsideKnown, human-caused, management capture and removal for cattle depredations.  
19201819MAdult6/22/2018Foster Gulch, PR-MTOutsideKnown, human-caused, management capture and removal for cattle depredations.  
18201818MAdult6/22/2018Bull Crk, BLM-WYOutsideKnown, human-caused, management capture for cattle damage, removed because of poor condition and extensive injuries from unknown cause.  
17201817MAdult6/17/2018Alkali Crk/Heart Mountain Canal, PR-WYOutsideKnown, human-caused, accidental, drowned in fast flowing, cement sided canal.  
16201816  2018WYInsideProbable. Under investigation.  
15201815  2018WYInsideProbable. Under investigation.  
14201814  2018WYInsideKnown. Under investigation.  
13201813FSubadult5/30/2018Blaine Crk, BLM-WYOutsideKnown, human-caused, management removal for association with multiple livestock conflicts bold behavior towards humans.  
12201812UnkAdultFall, 2017Cervice Crk, YNPInsideKnown, undetermined cause, bear remains found that had been cached and consumed by another bear, likely natural mortality from fall of 2017.  
11201811  2018WYInsideProbable. Under investigation.  
10201810  2018WYInsideProbable. Under investigation.  
9201809  2018WYInsideProbable. Under investigation.  
8201808  2018WYInsideKnown. Under investigation.  
7201807UnkCubFall, 2017MTInsideProbable, undetermined cause, cub of female that died fall 2017 and was found spring of 2018. Under investigation.  
6201806UnkCubFall, 2017MTInsideProbable, undetermined cause, cub of female that died fall 2017 and was found spring of 2018. Under investigation.  
5201805FAdultFall, 2017MTInsideKnown, undetermined cause, mortality likely occurred fall 2017, was found spring 2018. Under investigation.  
4201804MAdult5/9/2018Green Crk, PR-WYInsideKnown, human-caused, management capture and removal for breaking into a building and obtaining a food reward.  
3201803MAdult5/8/2018Clarks Fork Yellowstone, SNF-WYInsideKnown, human-caused, humane removal of old bear in very poor condition that was unable to lift hind legs.  
2201802MAdult4/29/2018Pat O'Hara Crk, PR-WYOutsideKnown, human-caused, management capture and removal frequenting calving area and bold behavior towards humans.  
1201801MAdult4/10/2018Rawhide Crk, PR-WYOutsideKnown, human-caused, management capture and removal frequenting calving area and history of 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.