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.

Count Unique Sex Age class Known Mortality Date Location Loss
44

201144

UNK COY

4 Aug 2011

Blackrock Crk, BTNF-WY

Probable, natural, radioed female lost COY between 7/29 and 8/10. Location and mortality date are approximated.

43

201143

UNK COY

4 Aug 2011

Blackrock Crk, BTNF-WY

Probable, natural, radioed female lost COY between 7/29 and 8/10. Location and mortality date are approximated.

42

201142

M Adult

11 Nov 2011

South Fork Shoshone, State-WY

Known, human-caused, management removal after hunter was injured in state park, bear was old, had poor teeth, and was in poor condition for Nov

41

201141

F Adult

6 Nov 2011

Wind River, PR-WY

Known, human-caused, management removal for obtaining multiple food rewards in the town of Dubois, WY

40

201140

F Adult

30 Oct 2011

South Fork Shoshone, PR-WY

Known, human-caused, management removal for repeated nuisance activity and obtaining food rewards in a residential area

39

201139

F Subadult

25 Oct 2011

South Fork Warm Springs Crk, SNF

Known, human-caused, self-defense kill by hunter

38

201138

F Adult

Aug 2011

Lynx Crk, YNP

Known, undetermined cause, remains found by YNP staff, estimated time of death was August, DNA results indicated this was a female bear

37

201137

M Adult

21 Oct 2011

Box Crk, BTNF-WY

Known, human-caused, management removal for repeated property damage and food rewards

36

201136

M Adult

17 Oct 2011

Pine Crk, PR-MT

Known, human-caused, management removal for sheep depredation

35

201135

F Adult

11 Oct 2011

Lamar River, YNP

Known, natural, was likely killed by another bear

34

201134

F Adult

2 Oct 2011

North Fork Buffalo, BTNF-WY

Known, human-caused, hunting related, killed in self-defense, was accompanied by 2 yearlings

33

201133

M Adult

5 Oct 2011

Davis Crk, PR-MT

Known, human-caused, mistaken identity kill by black bear hunter

32

201132

M COY

29 Sep 2011

Sour Crk, YNP

Known, human-caused, live mangement removal. COY of mother involved in 1 human fatality and known to be at the site of a second

31

201131

M COY

29 Sep 2011

Sour Crk, YNP

Known, human-caused, live mangement removal. COY of mother involved in 1 human fatality and known to be at the site of a second

30

201130

F Adult

29 Sep 2011

Sour Crk, YNP

Known, 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.

29

201129

M Adult

20 Sep 2011

Rock Crk, CTNF-ID

Known, human-caused, appears to have died from a gunshot, bear had been dead approximately 1 week when reported by hunter. Mortality date is approximate

28

201128

M Adult

20 Sep 2011

Wind River, SNF-WY

Known, human-caused, management removal for repeated cattle depredation

27

201127

F Adult

Spr/Sum 2010

Cabin Crk, YNP

Known, 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

26

201126

F Adult

13 Sep 2011

South Fork Fish Crk, BTNF-WY

Known, human-caused, hunting related, defense of life by archery hunter, was accompanied by 1 large young

25

201125

M Adult

11 Sep 2011

Sunlight Crk, PR-WY

Known, human-caused, management removal for livestock depredation and management history of property damage

24

201124

UNK COY

10 Sep 2011

Burnt Timber Crk, SNF-WY

Probable, human-caused, 3rd of 3 COY whose mother was killed in self-defense by archery hunter

23

201123

UNK COY

10 Sep 2011

Burnt Timber Crk, SNF-WY

Probable, human-caused, 2nd of 3 COY whose mother was killed in self-defense by archery hunter

22

201122

UNK COY

10 Sep 2011

Burnt Timber Crk, SNF-WY

Probable, human-caused, 1st of 3 COY whose mother was killed in self-defense by archery hunter

21

201121

F Adult

10 Sep 2011

Burnt Timber Crk, SNF-WY

Known, human-caused, hunting related, defense of life by archery hunter, was accompanied by 3 COY

20

201120

F Adult

7 Sep 2011

Fales Fork, SNF-WY

Known, human-caused, hunting related, defense of life by archery hunter, was accompanied by 3 yearlings

19

201119

M Adult

9 Sep 2011

Bear Crk, PR-MT

Known, human-caused, management removal for repeated cattle depredation

18

201118

F Adult

Sep 2011

Gravelly Range, BDNF-MT

Known, human-caused, under investigation

17

201117

M Adult

28 Aug 2011

Green River, BTNF-WY

Known, human-caused, management removal for repeated cattle depredation

16

201116

UNK COY

25 Jun 2011

Pickett Crk, BLM-WY

Known, undetermined cause, remains of a COY that had been dead several months found and reported. Date of mortality is approximate.

15

201115

M Adult

24 Aug 2011

Strawberry Crk, BTNF-WY

Known, human-caused, management removal for repeated cattle depredation

14

201114

F COY

8 Aug 2011

South Fork Shoshone, PR-WY

Known, human-caused, management live removal to Cleveland Metro Zoo, was accompanying mother when she obtained anthropogenic foods on numerous occasions

13

201113

M COY

8 Aug 2011

South Fork Shoshone, PR-WY

Known, human-caused, management live removal to Cleveland Metro Zoo, was accompanying mother when she obtained anthropogenic foods on numerous occasions

12

201112

F Adult

7 Aug 2011

South Fork Shoshone, PR-WY

Known, human-caused, management removal for obtaining numerous food rewards at private residences, was accompanied by 2 COY

11

201111

F Adult

15 Oct 2010

Horse Crk, SNF-WY

Known, undetermined cause, last active location for bear #558 was 10/7, and first mortality signal was 10/19, mortality data is approximate.

10

201110

M Subadult

1 Aug 2011

Incinerator Crk, YNP

Known, human-caused, management removal for numerous nuisance activities and food rewards associated with a campground escalating to aggressive behavior towards humans to obtain food

9

201109

F Adult

27 Jul 2011

Wagon Crk, BTNF-WY

Known, human-caused, management removal for cattle depredations and prior management history for anthroprogenic foods

8

201108

F Adult

18 Jul 2011

Buttermilk Crk, PR-MT

Known, human-caused, management removal for repeated food rewards in a campground and at residences

7

201107

M Adult

16 Jul 2011

Fish Crk, BTNF-WY

Known, human-caused, management removal for repeated sheep and cattle depredation

6

201106

F Adult

11 Jul 2011

Skull Crk, WY

Known, human-caused, road kill

5

201105

2011

WY

Known, human-caused, under investigation

4

201104

M Adult

2 Jun 2011

Tangle Crk, YNP

Known, human-caused, road kill

3

201103

2011

WY

Known, human-caused, under investigation

2

201102

2011

WY

Known, under investigation

1

201101

M Adult

7 May 2011

Grass Crk, State-WY

Known, human-caused, management removal for breaking into cabin.