2012 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
56

201256

UNK COY

4 Aug 2012

North Fork Rodent Crk, BTNF

Probable, natural, COY of radio-collared female lost between 6/6 and 10/1. Mortality date and location are approximate.

55

201255

UNK COY

25 Jun 2012

Meadow Crk, GNF-MT

Probable, natural, 3rd of 3 COY of radio-collared female lost between 6/22 and 6/28. Mortality date and location are approximate.

54

201254

UNK COY

2 Jun 2012

Flints Crk, GNF-MT

Probable, natural, 2nd of 3 COY of radio-collared female lost between 5/13 and 6/22. Mortality date and location are approximate.

53

201253

UNK COY

2 Jun 2012

Flints Crk, GNF-MT

Probable, natural, 1st of 3 COY of radio-collared female lost between 5/13 and 6/22. Mortality date and location are approximate.

52

201252

UNK COY

2 Jun 2012

Lamar River, YNP

Probable, natural, COY of radio-collared female lost between 5/14 and 6/21. Mortality date and location are approximate.

51

201251

M Adult

22 Nov 2012

Snake River, GTNP

Known, human-caused, self-defense kill by hunters at elk carcass.

50

201250

2012

MT

Probable, human-caused, under investigation.

49

201249

M COY

2 Oct 2012

Mountain Crk, SNF-WY

Probable, natural, 3rd of 3 COY not accompanying adult female when she was captured and removed. Date and location are approximate.

48

201248

M COY

2 Oct 2012

Mountain Crk, SNF-WY

Probable, natural, 2nd of 3 COY not accompanying adult female when she was captured and removed. Date and location are approximate.

47

201247

M COY

2 Oct 2012

Mountain Crk, SNF-WY

Probable, natural, 1st of 3 COY not accompanying adult female when she was captured and removed. Date and location are approximate.

46

201246

F Adult

20 Oct 2012

Pacific Crk, BTNF-WY

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

45

201245

M Adult

12 Oct 2012

Cartridge Crk, SNF-WY

Known, human-caused, self-defense kill by hunters.

44

201244

M Adult

9 Oct 2012

Roaring Fork, BTNF-WY

Known, human-caused, self-defense kill by hunters.

43

201243

UNK COY

30 Sep 2012

Venus Crk, SNF-WY

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

42

201242

UNK COY

30 Sep 2012

Venus Crk, SNF-WY

Known, human-caused, 1st of 2 COY whose mother was killed in self-defense by hunter.

41

201241

F Adult

30 Sep 2012

Venus Crk, SNF-WY

Known, human-caused, self-defense kill of female with 2 COY by hunter.

40

201240

M Adult

30 Sep 2012

Buffalo Fork River, BTNF

Known, human-caused, under investigation.

39

201239

M Adult

Sep 2012

Spread Crk, GTNP

Known, undetermined cause, carcass was found near highway and had been partially consumed. Likely died during September.

38

201238

UNK COY

24 Sep 2012

Thorofare Crk, BTNF-WY

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

37

201237

UNK COY

24 Sep 2012

Thorofare Crk, BTNF-WY

Probable, human-caused, 1st of 2 COY whose mother was killed in self-defense by hunter.

36

201236

F Adult

24 Sep 2012

Thorofare Crk, BTNF-WY

Known, human-caused, adult female with 2 COY killed by hunter in self-defense.

35

201235

F Adult

22 Sep 2012

South Fork Shoshone River, PR-WY

Known, human-caused, management removal for repeated conflicts at numerous residences and obtaining multiple food rewards.

34

201234

UNK COY

17 Sep 2012

East Fork Wind River, SNF-WY

Probable, human-caused, COY of female that was killed by hunters in self-defense.

33

201233

F Adult

17 Sep 2012

East Fork Wind River, SNF-WY

Known, human-caused, self-defense kill by hunter of female accompained by 1 COY.

32

201232

M Subadult

18 Sep 2012

Greybull River, PR-WY

Known, human-caused, management removal for obtaining multiple food rewards at residences and damaging apiaries.

31

201231

F COY

No zoo could be found to take this COY. She was instrumented and released back into the ecosystem and her fate is being monitored. She is not counted as a mortality at this time.

30

201230

F Adult

16 Sep 2012

Bear Crk, PR-MT

Known, human-caused, management removal for numerous cattle depredations.

29

201229

M Adult

17 Sep 2012

North Piney Crk, PR-WY

Known, human-caused, management removal for repeated cattle depredations.

28

201228

M Adult

13 Sep 2012

Horse Crk, PR-WY

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

27

201227

M Adult

12 Sep 2012

Pacific Crk, BTNF

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

26

201226

UNK Subadult

Fall, 2011

Dago Crk, BTNF-WY

Known, natural, likely killed by another bear during the fall of 2011. Carcass found and reported 5 Sept 2012. Sample submitted for DNA determination of sex.

25

201225

M Subadult

7 Sep 2012

Eaglenest Crk, PR-WY

Known, human-caused, management removal for obtaining multiple food rewards.

24

201224

M Adult

28 Aug 2012

Pacific Crk, BTNF-WY

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

23

201223

M Adult

Spring 2012

Camp Crk, SNF-WY

Known, human-caused, under investigation.

22

201222

M Adult

22 Aug 2012

North Fork Shoshone River, SNF-WY

Known, human-caused, road kill.

21

201221

M Adult

17 Aug 2012

Raspberry Crk, BTNF-WY

Known, human-caused, management removal for repeated cattle depredations.

20

201220

M Adult

3 Aug 2012

Wagon Crk, BTNF-WY

Known, human-caused, management removal for repeated cattle depredations.

19

201219

F Adult

28 Jul 2012

Fish Crk, BTNF-WY

Known, human-caused, management removal for repeated cattle depredations.

18

201218

M Adult

27 Jul 2012

Robbers Roost Crk, SNF-WY

Known, human-caused, killed by hikers in self-defense at close range during a surprise encounter.

17

201217

M Subadult

5 Jun 2012

Sour Crk, YNP

Known, natural mortality of a radio-marked subadult, specific cause of death is unknown. Mortality date is midpoint between last active and first mortality signal.

16

201216

M Subadult

22 Jun 2012

South Dry Crk, PR-MT

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

15

201215

M Yearling

21 Jun 2012

Snake River, GTNP

Known, human-caused, trauma from vehicle strike.

14

201214

M Subadult

11 Jun 2012

Cherry Crk, BDNF-MT

Known, human-caused, mistaken identity kill by bow hunter.

13

201213

UNK COY

11 Jun 2012

Lamar River, YNP

Known, natural, COY likely killed by wolves.

12

201212

UNK COY

21 May 2012

Alum Crk, YNP

Probable, natural, COY of mother that was killed by another bear. Mortality date is approximate (midpoint between last active and first mortality signal of mother).

11

201211

UNK COY

21 May 2012

Alum Crk, YNP

Known, natural, killed with mother by another bear. Mortality date is approximate (midpoint between last active and first mortality signal of mother).

10

201210

F Adult

21 May 2012

Alum Crk, YNP

Known, natural, radio-marked female with 2 COY was killed by another bear, one cub dead at site, second cub probably also dead. Mortality date is approximate (midpoint between last active and first mortality signal).

9

201209

UNK COY

21 May 2012

Jasper Crk, YNP

Probable, natural, COY of mother that was killed by another bear. Mortality date is approximate (midpoint between last active and first mortality signal of mother).

8

201208

UNK COY

21 May 2012

Jasper Crk, YNP

Probable, natural, COY of mother that was killed by another bear. Mortality date is approximate (midpoint between last active and first mortality signal of mother).

7

201207

F Adult

21 May 2012

Jasper Crk, YNP

Known, natural, radio-marked female with 2 COY was killed by another bear, both COY probably dead also. Mortality date is approximate (midpoint between last active and first mortality signal).

6

201206

M Adult

19 Jan 2012

Spruce Crk, YNP

Known, natural, radio-marked bear died during winter, probably from maladies associated with old age. Mortality date is approximate (midpoint between last active and first mortality signal)

5

201205

F Adult

31 May 2012

Yellowstone River, YNP

Known, natural, adult female was killed by another bear.

4

201204

M Adult

25 May 2012

Gallatin River, PR-MT

Known, human-caused, shot in defense of property (dogs) at private residence.

3

201203

F COY

10 May 2012

Horse Crk, PR-WY

Known, natural, management capture of orphaned COY at a private residence in Dubios, WY on 5/7. Cub was in poor condition and died in captivity on 5/10. The cub did not respond to feeding. Circumstances of why the cub was alone are unknown.

2

201202

F Subadult

22 Apr 2012

Sweet Hollow Crk, PR-ID

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

1

201201

M Adult

17 Apr 2012

Wood River, PR-WY

Known, human-caused, management removal for repeated sheep depredations.