2010 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.

NOTE: Two mortalities on the 2010 list occurred during fall 2009 and are still under investigation.

Count Unique Sex Age class Known Mortality Date Location Loss
50

201050

UNK COY

9 Aug 2010

Trout Crk, YNP

Probable, natural, collared female lost 1 COY between 7/4-9/16. Mortality date is approximated.

49

201049

F Adult

5 Nov 2010

Donahue Crk, GNF-MT

Known, human-caused, self-defense by hunter, no evidence of young

48

201048

F Adult

27 Oct 2010

Aldrich Crk, SNF-WY

Known, human-caused, hunting related self-defense, human injury, female was accompanied by 2 yearlings

47

201047

M Adult

24 Oct 2010

Lodgepole Crk, SNF-WY

Known, human-caused, self-defense by hunter, hunter was unable to deter bear as it approached. Shot at close range.

46

201046

M Subadult

23 Oct 2010

Wolf Crk, BTNF-MT

Known, human-caused, killed in self-defense by hunter, hunter used pepper spray initially, shot bear as it returned a second time.

45

201045

UNK COY

19 Oct 2010

Crandall Crk, SNF-WY

Probable, human-caused, COY of female that was killed in self-defense during hunting related incident.

44

201044

F Adult

19 Oct 2010

Crandall Crk, SNF-WY

Known, human-caused, killed in self-defense by hunter, bear followed hunter from elk carcass and approached to very close range on 2 occasions, was shot during second approach. Female was accompanied by 1 COY

43

201043

M Adult

5 Jul 2010

Venus Crk, SNF-WY

Known, natural, old aged radio-collared bear died at very remote location, no evidence of human involvement

42

201042

F Adult

17 Oct 2010

Green Crk, PR-WY

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

41

201041

M Adult

11 Oct 2010

Yellowstone River, PR-MT

Known, human-caused, management removal for repeated food rewards by gaining entry to the Gardiner garbage collection site

40

201040

M Subadult

11 Oct 2010

Mountain Crk, BTNF-WY

Known, human-caused, killed in outfitters camp

39

201039

M Adult

7 Oct 2010

Mountain Crk, BTNF-WY

Known, human-caused, killed in outfitters camp

38

201038

F Adult

7 Oct 2010

Jim Crk, SNF-WY

Known, human-caused, killed in self-defense by hunters, human injuries, female was accompained by a yearling

37

201037

M Adult

5 Oct 2010

West Yellowstone, PR-MT

Known, human-caused, management removal for repeated food rewards and nuisance activity in the town of West Yellowstone. Bear was also in poor condition

36

201036

UNK COY

2 Oct 2010

Lamar River, YNP

Known, natural, wolves observed feeding on a COY grizzly by YNP wolf researchers, investigation of the site revealed only hair, no other remains

35

201035

M Adult

4 Oct 2010

Sheridan Crk, SNF-WY

Known, human-caused, killed in self-defense by elk hunter.

34

201034

M Adult

29 Sep 2010

South Fork Shoshone River, PR-WY

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

33

201033

M Adult

22 Sep 2010

Cub Crk, BTNF-WY

Known, human-caused, malicious killing

32

201032

F Adult

24 Sep 2010

Diamond Crk, PR-WY

Known, human-caused, management removal for numerous property damages and food rewards in residential area

31

201031

F Adult

20 Sep 2010

Dry Crk, PR-MT

Known, human-caused, management removal for cattle depredation and aggressive behavior

30

201030

M Adult

10 Sep 2010

Bruin Crk, BTNF-WY

Known, human-caused, hunting related, self-defense at hunter killed elk carcass, one of 2 bears killed at this site on the same day.

29

201029

M Adult

10 Sep 2010

Bruin Crk, BTNF-WY

Known, human-caused, hunting related, self-defense at hunter killed elk carcass, one of 2 bears killed at this site on the same day.

28

201028

M Adult

7 Sep 2010

Horse Crk, BTNF-WY

Known, human-caused, killed in self-defense by guide hunting moose with client.

27

201027

M Adult

7 Sep 2010

Kinky Crk, BTNF-WY

Known, human-caused, management removal for repeated livestock depredations

26

201026

M Subadult

4 Sep 2010

Crow Crk, WRIR-WY

Known, human-caused, killed in self-defense at residence.

25

201025

M Adult

13 Oct 2009

Arrow Crk, SNF-WY

Known, undetermined cause, collar of radioed bear went on mortality between 10/6-21/2009, was determined to be a dead bear in September 2010, date is midpoint between last active date and date of first mortality signal

24

201024

M Adult

29 Aug 2010

Badger Crk, PR-WY

Known, human-caused, management removal for repeated livestock depredations

23

201023

F Subadult

19 Aug 2010

Brooks Lake, SNF-WY

Known, human-caused, live removal for numerous food rewards and propety damage

22

201022

M Adult

15 Aug 2010

Yellowstone River, YNP

Known, undetermined cause, found dead 50 m from highway near LeHardy Rapids, no indications of vehicle impact, wound in abdomen suggests it may have been gored by bison

21

201021

M Adult

15 Aug 2010

East Fork Wind River, PR-WY

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

20

201020

M Adult

14 Aug 2010

Fish Crk, BTNF-WY

Known, human-caused, shot at close range in self-defense near wolf killed domestic calf carcass.

19

201019

M Adult

5 Aug 2010

Sheridan Crk, SNF-WY

Known, human-caused, management removal for cattle depredation

18

201018

F Adult

3 Aug 2010

Sheridan Crk, SNF-WY

Known, human-caused, management removal for repeated cattle depredations, 2 yearlings accompaning female were relocated

17

201017

M Yearling

30 Jul 2010

Soda Butte Crk, GNF-MT

Known, human-caused, live removal of yearling associated with human fatality and 2 other human injuries

16

201016

F Yearling

29 Jul 2010

Soda Butte Crk, GNF-MT

Known, human-caused, live removal of yearling associated with human fatality and 2 other human injuries

15

201015

F Yearling

29 Jul 2010

Soda Butte Crk, GNF-MT

Known, human-caused, live removal of yearling associated with human fatality and 2 other human injuries

14

201014

F Adult

28 Jul 2010

Soda Butte Crk, GNF-MT

Known, human-caused, management removal for human fatality and 2 other human injuries. Female was accompanied by 3 yearlings

13

201013

M Subadult

13 Jul 2010

Crooked Crk, PR-WY

Known, human-caused, management removal for numerous food rewards and aggressive behavior towards people.

12

201012

M COY

10 Jul 2010

South Fork Shoshone River, PR-WY

Known, human-caused, live removal of lone COY that was frequenting vicinity of ranch buildings

11

201011

F Adult

24 Jun 2010

Whiskey Crk, SNF

Probable, human-caused, collar found under suspicious circumstances. Likely killed between 6/18 and 6/30.

10

201010

F Adult

8 Nov 2009

West Fork Dry Crk, WRIR-WY

Known, undetermined cause, collar went on mortality between 11/4-11/13 2009. Was determined to to be a dead in July 2010. No evidence as to cause of death was found

9

201009

M Subadult

2 Jul 2010

Solfatara Crk, YNP

Known, human-caused, live removal for repeated nuisance activity, property damage, and bold behavior in campground

8

201008

M Adult

19 Jun 2010

Kitty Crk, SNF, WY

Known, human-caused, management removal for human fatality.

7

201007

M Yearling

18 Jun 2010

Iron Springs Crk, YNP

Known, human-caused, accidental death during management capture operation. Bear had lost an eye and had numerous infected injuries inflicted by another predator and was in very poor condition.

6

201006

F Adult

12 Jun 2010

Elkhorn Crk, GNF-MT

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

5

201005

F Adult

7 Jun 2010

Blacktail Crk, YNP

Known, natural, likely predation by wolves, extremely poor condition and old age were likely contributing factors.

4

201004

M Yearling

7 Jun 2010

Gallatin River, YNP

Known, human-caused, road kill

3

201003

M Subadult

2 Jun 2010

Spread Crk, GTNP

Known, human-caused, road kill

2

201002

M Adult

23 May 2010

Big Crk, PR-WY

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

1

201001

M Adult

13 May 2010

Grass Crk, State-WY

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