(1.65 MB)

A Strategy of Managing Predation on Sierra Nevada Bighorn Sheep

Predation Management, Sierra bighorn

Daniel Gammons, Phillip Johnston, Jeffrey Davis, David German, Lacey Greene, Cody Massing, Tom Stephenson

9/24/2025

 (1.82 MB)

REPORT TO THE FISH AND GAME COMMISSION FIVE-YEAR SPECIES REVIEW OF SIERRA NEVADA BIGHORN SHEEP (Ovis canadensis sierrae)

Sierra bighorn CESA Review

CDFW

3/1/2021

 (998 KB)

2021-2022 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2021-22 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

Tom Stephenson, Phil Johnston, Cody Massing, Dave German, Kathleen Anderson, Lacey Greene

8/2023

 (4.23 MB)

2020-2021 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2020-21 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

Lacey Greene, Phil Johnston, Cody Massing, Dave German, Kathleen Anderson, Tom Stephenson

8/2023

 (1.36 MB)

2015-2016 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2015-2016 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., C. Massing, D. W. German, J. D. Wehausen, A. C. Sturgill, A. P. Johnson, K. Anderson, E. A. Siemion, D. Spitz and T. R. Stephenson

8/2018

 (325 KB)

2016-17 Annual Report Sierra Nevada Bighorn Sheep Recovery Program Supplemental Materials

2016-2017 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., C. Massing, D. W. German, A. C. Sturgill, K. Anderson, E. A. Siemion, J. L. Davis, D. Gammons and T. R. Stephenson

2/2019

 (2.92 MB)

2016-17 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2016-2017 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., C. Massing, D. W. German, A. C. Sturgill, K. Anderson, E. A. Siemion, J. L. Davis, D. Gammons and T. R. Stephenson

2/2019

 (60.6 KB)

Endangered Sierra Nevada Bighorn Sheep Translocation A First Time Volunteer’s Account

Volunteer Testimonial on working with Sierra Nevada Bighorn Sheep

Ginnie Chadwick

4/2012

 (1.33 MB)

Animal Movements Map -MountLangley_Male_S427 pdf

Animal Movements Map -MountLangley_Male_S427 pdf

German, D. W.

5/2017

 (1.32 MB)

Animal Movements Map - MountLangley_Female_S425 pdf

Animal Movements Map - MountLangley_Female_S425 pdf

German, D. W.

5/2017

 (1.39 MB)

Animal Movements Map - MountWilliamson_Male_S113 pdf

Animal Movements Map - MountWilliamson_Male_S113 pdf

German, D. W.

5/2017

 (1.34 MB)

Animal Movements Map - MountWilliamson_Female_S114 pdf

Animal Movements Map - MountWilliamson_Female_S114 pdf

German, D. W.

5/2017

 (1.41 MB)

Animal Movements Map - BubbsCreek_Male_S249 pdf

Animal Movements Map - BubbsCreek_Male_S249 pdf

German, D. W.

5/2017

 (1.42 MB)

Animal Movements Map - BubbsCreek_Female_S315 pdf

Animal Movements Map - BubbsCreek_Female_S315 pdf

German, D. W.

5/2017

 (1.49 MB)

Animal Movements Map - LaurelCreek_Female_S376 pdf

Animal Movements Map - LaurelCreek_Female_S376 pdf

German, D. W.

5/2017

 (1.20 MB)

Animal Movements Map - MountBaxter_Male_S202 pdf

Animal Movements Map - MountBaxter_Male_S202 pdf

German, D. W.

5/2017

 (3.63 MB)

Sierra Nevada Bighorn Sheep Citizen Science

Sierra Nevada Bighorn Sheep Citizen Science

Massing, C.

4/2017

 (2.25 MB)

2014 Addendum to the Translocation Plan for SNBS

2014 Addendum to the Translocation Plan for SNBS

Few, A. P., D. W. German, B. E. Hatfield, Knox, Kathleen, D. Spitz, J. D. Wehausen and T. R. Stephenson

3/2014

 (2.25 MB)

Translocation Plan for Sierra Nevada Bighorn Sheep

Translocation Plan for Sierra Nevada Bighorn Sheep

Few, A. P., D. W. German, J. D. Wehausen, B. M. Pierce and T. R. Stephenson

2/2013

 (1.24 MB)

2013-2014 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

2013-2014 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Runcie, Julia, A. P. Few, D. W. German, J. D. Wehausen and T. R. Stephenson

6/2014

 (986 KB)

2012-2013 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

2012-2013 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Few, A. P., Runcie, Julia, D. W. German, J. D. Wehausen and T. R. Stephenson

6/2014

 (3.80 MB)

Annual report 2011-2012 Sierra Nevada bighorn sheep recovery program May 2011 - April 2012

Annual summary of Sierra Nevada bighorn sheep program 2011-2012

Few, A. P., D. W. German, B. M. Pierce, J. D. Wehausen and T. R. Stephenson

5/2013

 (350 KB)

Risk-sensitive allocation in seasonal dynamics of fat and protein reserves in a long-lived mammal

Risk-sensitive allocation in seasonal dynamics of fat and protein reserves in a long-lived mammal

Monteith, K. L., T. R. Stephenson, V. C. Bleich, M. M. Conner, B. M. Pierce and R. T. Bowyer

2013

 (286 KB)

Top-down versus bottom-up forcing: evidence from mountain lions and mule deer

Top-down versus bottom-up forcing: evidence from mountain lions and mule deer

Pierce, B. M., V. C. Bleich, K. L. Monteith and R. T. Bowyer

8/2012

 (70.9 KB)

Notice of Determination(NOD): US Forest Service Environmental Assessment for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

CEQA for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

DFG

9/14/2012

 (109 KB)

Notice of Intent (NOI): Inyo National Forest Environmental Assessment - Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

CEQA for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

DFG

9/14/2012

 (212 KB)

Findings of No Significant Impact (FONSI): Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

Findings of No Significant Impact (FONSI): Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

6/2012

 (527 KB)

Environmental Assessment (EA) - Appendix D: Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USFS Environmental Assessment Appendix D for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

5/2012

 (372 KB)

Environmental Assessment (EA) - Appendix C: Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USFS Environmental Assessment Appendix C for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

5/2012

 (761 KB)

Environmental Assessment (EA) - Appendix B: Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USFS Environmental Assessment Appendix B for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

5/2012

 (555 KB)

Environmental Assessment (EA) - Appendix A: Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USFS Environmental Assessment Appendix A for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

5/2012

 (2.14 MB)

Environmental Assessment (EA): Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USFS Environmental Assessment for Capturing Sierra Nevada Bighorn Sheep Within Portions of the Ansel Adams, Hoover, John Muir, Golden Trout, and South Sierra Wilderness Areas

USDA Forest Service

5/2012

 (7.02 MB)

Recommedations for domestic sheep and goat management in wild sheep habitat

Recommedations for domestic sheep and goat management in wild sheep habitat

Wild Sheep Working Group

2012

 (768 KB)

Evaluating apparent competition in limiting the recovery of an endangered ungulate

Evaluating apparent competition in limiting the recovery of an endangered ungulate

Johnson, H. E., M. Hebblewhite, T. R. Stephenson, D. W. German, B. M. Pierce and V. C. Bleich

1/1/2013

 (665 KB)

Disease, Population Viability, and Recovery of Endangered Sierra Nevada Bighorn Sheep

Evaluate potential impact of disease on demographic rates and species persistence

Cahn, M. L., M. M. Connor, O. J. Schmitz, T. R. Stephenson, J. D. Wehausen and H. E. Johnson

11/2011

 (2.12 MB)

2019-20 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2019-20 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., P. Johnston, D. Gammons, C. Massing, D. W. German, K. Anderson and T. R. Stephenson

12/2022

 (1.09 MB)

Defense of One Twin Calf against Wolves, Canis lupus, by a Female Moose, Alces alces

Wolf, Canis lupus, Moose, Alces alces, calf, predation, predator avoidance, behavior, Alaska

Stephenson, T. R. and V. Van Ballenberghe

1995

 (1.23 MB)

Wolf, Canis lupus, predation on dusky Canada geese, Branta canadensis occidentalis

wolves, dusky Canada geese, predation, alternate prey, Alaska

Stephenson, T. R. and V. Van Ballenberghe

1995

 (186 KB)

2022 Status of Bighorn Sheep Herds that Utilize Yosemite National Park

Annual summary of Sierra Nevada bighorn sheep in Yosemite 2022

Wehause, J. D.

11/2022

 (2.61 MB)

2018-19 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2018-2019 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., D. Gammons, C. Massing, D. W. German, K. Anderson, E. A. Siemion, J. Leary and T. R. Stephenson

4/24/2022

 (1.72 MB)

Predation impedes recovery of Sierra Nevada bighorn sheep

Predation impedes recovery of Sierra Nevada bighorn sheep

Gammons, D., J. L. Davis, D. W. German, K. Denryter, J. D. Wehausen and T. R. Stephenson

2021

 (2.04 MB)

2017-18 Annual Report Sierra Nevada Bighorn Sheep Recovery Program

2017-2018 Annual Report of the Sierra Nevada Bighorn Sheep Recovery Program

Greene, L., C. Massing, D. W. German, D. Gammons, K. Anderson, E. A. Siemion and T. R. Stephenson

1/1/2020

 (70.3 KB)

Endangered and threatened wildlife and plants; emergency rule to list the Sierra Nevada distinct population segment of California bighorn sheep as endangered

Emergency ESA Listing Sierra Bighorn Sheep 1999

Benz, C.

4/20/1999

 (161 KB)

Endangered and threatened wildlife and plants; final rule to list the Sierra Nevada distinct population segment of the California bighorn sheep as endangered

Final ESAListing Sierra Bighorn Sheep 2000

Benz, C.

1/3/2000

 (13.1 MB)

Life on the Edge: Risk of Predation Drives Selection of Habitat and Survival of Neonates in Endangered Sierra Nevada Bighorn Sheep

Risk of Predation Drives Selection of Habitat and Survival of Neonates in Endangered Sierra Nevada Bighorn Sheep

Forshee, S. C.

12/2018

 (410 KB)

How plastic is migratory behavior? Quantifying elevational movement in a partially migratory alpine ungulate, the Sierra Nevada bighorn sheep (Ovis canadensis sierrae)

Elevational Migratory Behavior of Sierra Bighorn

Spitz, D., M. Hebblewhite, T. R. Stephenson and D. W. German

4/2018

 (2.80 MB)

‘MigrateR’: extending model-driven methods for classifying and quantifying animal movement behavior

Modeling migration

Spitz, D., T. R. Stephenson and M. Hebblewhite

2/2017

 (2.05 MB)

Integrating Nutrition, Resource Use, and Population Demographics to Inform Conservation of Endangered Species

Integrating Nutrition, Resource Use, and Population Demographics

Denryter, K., T. R. Stephenson and K. L. Monteith

9/2017

 (117 KB)

2018 Status of Sierra Nevada Bighorn Sheep Herds in Yosemite National Park

Annual summary of Sierra Nevada bighorn sheep in Yosemite 2018

Wehausen, J. D.

12/2018

 (444 KB)

Bighorn Sheep in California - Map

Bighorn Sheep in California - Map of distributions

Anderson, K.

2008