1st CALL FOR ABSTRACTS
2026 NWSGC Biennial Symposium
Spring 2026

Northern Wild Sheep and Goat Council 22 – 2020

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Proceedings of the 22nd Biennal Symposium
Virtual Meeting, Alberta, Canada


Table of Contents

Introduction, Sponsors, Guidelines and Forward

Tributes to Dr. Valerius Geist (1938 – 2021)

Northern Wild Sheep and Goat Council: Position Statement: Commercial and Recreational Disturbance of Mountain Goats:Recommendations for Management

Virtual Social

DISEASE PLENARY: IN A BLINK AT THE BRINK

Bighorn sheep (Ovis canadensis) disease management in Wyoming
Doug McWhirter, William H. Edwards and Peach Van Wick

“Little Bo-Peep, please test your sheep” Managing disease risk in Alberta
Anne Hubbs and Mark Ball

Mycoplasma ovipneumoniae surveillance in Yukon wildlife
N. Jane Harms, Kristenn Magnusson, Meghan Larivee, Maud Henaff and Mary Vanderkop

The role of bighorn ewe infection status in managing pneumonia in lambs
Frances Cassirer, Tom Besser, Logan Weyand, Raina Plowright, Kezia Manlove, Brandi Felts, Tyler Garwood, Jon Jenks, Mike Cox, Peregrine Wolff, Paul Cross, Andy Dobson, Jack Hogg, Pete Hudson, Matt Jeffress, Chad Lehman, Amy Lisk, Pat Matthews, Paul Wik and
Dan Walsh

A preliminary look at what drives individual and herd response to Mycoplasma ovipneumoniae: Integrating information from focal herds and wider-scale monitoring
Kezia Manlove, Kylie Sinclair, Lauren Ricci, Brianna Johnson, Jace Taylor, Annette Roug and Mike Cox

DISEASE AND PARASITES

Mycoplasma ovipneumoniae: Mitigating the risk of transmission in Yukon
Kristenn Magnusson, N. Jane Harms, Mary Vanderkop, Jesse Walchuk and Matthew Larsen

Bighorn movement and domestic sheep presence surrounding a case of acute fatal pneumonia in a bighorn sheep
Kevin A. Blecha and Karen A. Fox

Symptom progression and serological dynamics following introduction of a low-virulence
Mycoplasma ovipneumoniae strain in a desert bighorn herd

Brianna Johnson, Kezia Manlove, Janice Stroud-Settles, Jace Taylor and Annette Roug

Identifying drivers of bighorn sheep population recovery in the wake of pneumonia die-off events
Kylie Sinclair, Mike Cox, Peregrine Wolff and Kezia Manlove

Health Surveillance in thinhorn sheep (Ovis dalli) herds in British Columbia and Alaska
Caeley Thacker, Helen Schwantje, Thomas Lohuis, Kathreen E. Ruckstuh and Douglas Whiteside

Determining the source of the Psoroptes outbreak in British Columbian bighorn sheep
Adam M. Hering, Neil B. Chilton, Tasha Y. Epp and Murray R. Woodbury

Testing of new options for the treatment of Psoroptes ovis in bighorn sheep
Adam M. Hering, Andrew Walker, Helen Schwantje, Tasha Epp, Craig McLean, Aaron Reid, Sean O’Donovan, James Pepper, Cailyn Glasser and Murray Woodbury

HABITAT AND CLIMATIC FACTORS

Mapping Alberta bighorn sheep winter range – RSF validation and inter-jurisdictional collaboration
Grant Chapman, Scott Jevons, Layne Seely, Kim Poole, Rob Serrouya, Irene Teske, Anne Hubbs, Jack Hogg, Kathreen E. Ruckstuhl and Dale Paton

Evaluating characteristics of mineral licks used by two mountain ungulates
Emma C. Grusing, Blake H. Lowrey, Jesse DeVoe and Robert A. Garrott

Estimating nutritional carrying capacity of bighorn sheep in the Elk Valley
Kyle H. Knopff, Meghan M. Beale and Christina Small

Spatial genetic structure of Rocky Mountain bighorn sheep (Ovis canadensis canadensis) at the northern limit of their native range
Samuel Deakins, Jamieson C. Gorrell, Jeffery Kneteman, David S. Hik, Richard M. Jobin and David W. Coltman

Evaluating bighorn sheep restoration using genomics
Elizabeth P. Flesch, Tabitha A. Graves, Jennifer M. Thomson, Kelly M. Proffitt, P.J. White, Thomas R. Stephenson and Robert A. Garrott

MANAGEMENT

Despite denials, persistent harvest-based selection leads to the evolution of smaller horns in mountain sheep
Marco Festa-Bianchet and Michael B. Morrissey

Size-at-Age of Alberta’s bighorn sheep (Ovis canadensis)
Nils Anderson

Management update and summary: Alaskan Dall Sheep 2020
Wayne E. Heimer

Fast phenotypic change in a sexually selected trait: A new mechanism
Peter Neuhaus, Susanne Schindler and Kathreen E. Ruckstuhl

Reintroducing and augmenting mountain goat populations in the north cascades:Translocations from the Olympic Peninsula, 2018-2020
Richard B. Harris, Clifford G. Rice, Ruth L. Milner and Patti Happe

Removing non-native mountain goats from the Olympic Peninsula
Patti Happe, Kristin Mansfield, Jenny Powers, William Moore, Susan Piper, Bryan Murphie and Richard B. Harris

POPULATION ECOLOGY

An integrated population model for Rocky Mountain bighorn sheep in the Elk Valley
Steven F. Wilson and Christina Small

Stone’s sheep lambing habitat selection in the Cassiar Mountains, British Columbia
Grace Enns, Bill Jex and Mark S. Boyce

Limiting factors on a small herd of Rocky Mountain bighorn sheep residing in the Kicking Horse Canyon, near Golden, British Columbia
Margaret Langley

BEHAVIOUR AND ECOLOGY

Behavioural states as a proxy for habitat hotspots by mountain goats (Oreamnos americanus) using hidden Markov models
Laura Kroesen, David Hik and Seth Cherry

Colonization of a reclaimed landscape by bighorn sheep (Ovis canadensis)
Beth MacCallum and Alice Paquet

Mountain goat response to human activity in Jasper National Park
Kyle H. Knopff, Aliah R.A. Knopff and Martin G. Jalkotzy

Mountain goats and people: Cultural resurgence as Indigenous methodology
Charles R. Menzies

From pellets to genomes: New tools provide novel insights into mountain goat ecology and evolution
Aaron B.A. Shafer, Sarah E. Haworth, Daria Martchenko, Jesse Wolf and Kiana B. Young

 Recorded Zoom Meeting
Tuesday – November 3 
Welcome/Symposium Introduction (Kevin Hurley, Beth MacCallum, Matt Besko)https://youtu.be/D-xy6sgcz68 – Kevin Hurley https://youtu.be/LEFuO5Wt7Z0 – Beth MacCallum
https://youtu.be/y0r3nvkx5pw – Matt Besko
In a Blink at the Brink: Disease Plenary (Moderator: Margo Pybus)https://youtu.be/Tmc0-MIvWb8
Tom Besser: Mycoplasma ovipneumoniae in bighorn sheep epizootic pneumonia: Updating the conceptual modelhttps://youtu.be/KMCx4Sh6oyk
Doug McWhirter (Wyoming jurisdiction): Bighorn Sheep Disease Management in Wyominghttps://youtu.be/x4554CZ4K4Q
Helen Schwantje (British Columbia jurisdiction): A Walk on the Wild Side: BC Wild and Domestic Sheep Updatehttps://youtu.be/REDuIeyCluc
Anne Hubbs & Mark Ball (Alberta jurisdiction): “Little Bo-Peep, please test your sheep” Managing disease risk in AlbertaAt the presenter’s option,
this ZOOM recording is not available.
Jane Harms (Yukon jurisdiction): Mycoplasma ovipneumoniae surveillance in Yukon wildlifehttps://youtu.be/C96Nw-P63co
Peregrine Wolff: Don’t Lose Sight of Health in the Forest of Diseasehttps://youtu.be/Os9emY5612I
Frances Cassirer: The role of bighorn ewe infection status in managing pneumonia in lambs.By the descrition of the presenter this Zoom recording is not available.
Kezia Manlove: A preliminary look at what drives individual and herd response to Mycoplasma ovipneumoniae: Integrating information from focal herds and wider-scale monitoring.https://youtu.be/qifO3l0hVh4
Disease and parasites (Moderator: Susan Kutz)At the presenter’s option, this ZOOM recording is not available.
Kristenn Magnusson: Mycoplasma ovipneumoniae: mitigating the risk of transmission in Yukon.https://youtu.be/c_ocUcWige8
Kevin Blecha: Bighorn movement and domestic sheep presence surrounding a case of acute fatal pneumonia in a bighorn sheepAt the presenter’s option,
this ZOOM recording is not available.
Robert Spaan: Impact of Mycoplasma ovipneumoniae on lamb survival for “California”-managed bighorn sheep in southeastern Oregon and northern Nevada.At the presenter’s option,
this ZOOM recording is not available.
Brianna Johnson: Symptom progression and serological dynamics following introduction of a low-virulence Mycoplasma ovipneumoniae strain in a desert bighorn herd.https://youtu.be/53nf74jzEX0
Kylie Sinclair: Identifying drivers of bighorn sheep population recovery in the wake of pneumonia die-off events.https://youtu.be/nXnOx9uYwUg
Caeley Thacker: Respiratory Disease Pathogens in Thinhorn Sheep – Preliminary Findings and Review of Methods.https://youtu.be/T-LNOvSLH88
Adam M Hering: Determining the source of the?Psoroptes outbreak in British Columbian bighorn sheep.https://youtu.be/3LviI2WE9qo
Adam M Hering: Testing of new options for the treatment of Psoroptes ovis in bighorn sheephttps://youtu.be/3zTGiT0cvCs
Wild and Wool (feature film) (Moderator: Kevin Hurley)https://youtu.be/Na-crlPbcwQ
WILD AND WOOL FILMhttps://www.youtube.com/watch?v=KbZU36U49Cc
Discussion (Moderator: Kevin Hurley)https://youtu.be/PtkKg7vizjA
Wednesday – November 4 
Habitat and Climatic Factors (Moderator: Mike Jokinen)https://youtu.be/hpGOt_Xg9CM
Grant Chapman: Mapping Alberta Bighorn Sheep Winter Range – RSF validation and inter-jurisdictional collaboration.https://youtu.be/H4YzGbw8bcg
Laura Balyx: Conflict and Coexistence with Mountain Goats in a Protected Alpine Landscape.
https://youtu.be/k_8pnLhqKb4
Emma C. Grusing: Evaluating Characteristics of Mineral Licks used by Two Mountain Ungulates.https://youtu.be/YCJPou9G4rU
Kevin S. White: Climate and anthropogenic effects on mountain goat population dynamics in coastal Alaska.https://youtu.be/z2Sh1_UDXo0
Kyle Knopff: Estimating nutritional carrying capacity of bighorn sheep in the Elk
Valley.
https://youtu.be/WsmZ2GEn9Io
NWSGC Business Meetinghttps://youtu.be/M8_HEZz-s3s
Genetics and Movement (Moderator: Jocelyn Poissant)https://youtu.be/CeYc0iZAvhw
Samuel Deakins: Spatial genetic structure of Rocky Mountain bighorn sheep Ovis canadensis canadensis at the northern limit of their native range.https://youtu.be/yyUJI2vGnGU
Elizabeth P. Flesch: evaluating bighorn sheep restoration using genomics.https://youtu.be/QaPuvX_S3xs
Joshua P. Jahner: Characterizing genetic differentiation and hybridization among California, Rocky Mountain, and desert bighorn sheep in Nevada to inform future
translocations.
https://youtu.be/NFijL-wLcpg
Lauren Ricci: Identifying environmental and demographic drivers of foray behavior in bighorn sheep.https://youtu.be/Of5WoBl6vQg
Management (Moderators: Mark Boyce) 
Marco Festa-Bianchet: Despite denials, persistent harvest-based selection leads to the evolution of smaller horns in mountain sheep.https://youtu.be/Utx9Jbxz8cs
Nils Anderson: Developing a size-at-age relationship from hunter harvested bighorn sheep to support management relevant population models.https://youtu.be/0OB2cBIWNls
Wayne E. Heimer: Management Update and Summary: Alaskan Dall Sheep 2020.https://youtu.be/lenCNCwRML0
Pamela Hengeveld: Looking Forward: Insight from 20 Years of Wild Sheep and Goat Research in British Columbia.https://youtu.be/GvrNz6to868
Peter Neuhaus: Fast phenotypic change in a sexually selected trait: a new mechanismhttps://youtu.be/V28KoaFNz7g
Thursday – November 5 
Population Ecology (Moderator: Marco Festa-Bianchet) 
Steven F. Wilson: An Integrated Population Model for Rocky Mountain Bighorn Sheep in the Elk Valley, BC.https://youtu.be/d-hmJAM9wTk
Sofia Karabatsos: Distribution of bighorn sheep in their Alberta Rocky Mountain winter range over half a century.https://youtu.be/ZlVixNIXtck
Grace Enns: Stone’s sheep lambing habitat selection in the Cassiar Mountains, British Columbia.https://youtu.be/Y7DYLiAP5Xo
Margaret Langley: limiting factors on a herd of about 15 Rocky Mountain bighorn sheep (Ovis canadensis canadensis) resident in the Kicking Horse Canyon.https://youtu.be/_i0uWZHftE4
Behaviour and Ecology – Part I (Moderator: Jenna Curtis) 
Thomas R. Stephenson: Energy Conservation in Alpine Resident Bighorn Populations.https://youtu.be/C22zAGRIlc0
N. Beth MacCallum: Colonization of a Reclaimed Landscape by Bighorn Sheep.At the presenter’s option,
this ZOOM recording is not available.
Laura Kroesen: Life on the edge: identifying mountain goat habitat hotspots in the high alpinehttps://youtu.be/exu12mqL11Y
Behaviour and Ecology – Part II (Moderator: Jenna Curtis)At the presenter’s option,
this ZOOM recording is not available.
Charles R. Menzies: Mountain Goats and People: cultural resurgence as Indigenous methodology

https://youtu.be/9YUVuSyuxHQ
Kyle Knopff: Mountain Goat Response to Human Activity in Jasper National Park.https://youtu.be/bK_bD2BnBGw
Jesse Wolf: From pellets to genomes: new tools provide novel insights into mountain goat ecology and evolution.https://youtu.be/qCE-nl_qcJs