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Often envisaged as the iconic wilderness animal of North America’s grasslands, the bison (Bison bison) population has faced near extinction from a once formidable population of approximately forty million in the seventeenth century.

The conservation and recovery of bison in Alberta is complex. AWA’s main concern is that wild bison herds remain wild and they be managed as such.

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    Bison – Home in Alberta

    Bison are a keystone species to the prairie ecosystem, as they directly affect plant composition and maintain grasslands and meadows through grazing. Both flooding and fires traditionally reduced the encroachment of forests to meadowed areas, providing bison with wet meadow sedge and grass vegetation that bison depend on. First Nations played a critical role in fire management to clear forests and renew grazing areas. Now, dams and management of flood and fires in the province have reduced the natural disturbance preferred by bison.

    Bison played an important role in the disturbance regimes of prairie and woodland wilderness areas throughout central and northern North America historically. They also provided forage for large carnivores such as wolves, coyotes, and grizzly bears. Efforts are being made in Alberta and other jurisdictions to re-establish the role of bison as an ecological keystone species. Land use planners, First Nations communities and federal agencies continue to work in cooperation as Wood bison numbers grow and the range expands throughout the boreal ecoregion in northern Alberta. Wild Plains bison are currently being introduced into Banff National Park, and further initiatives are under discussion with the goal of re-establishing a Plains bison population in southeastern Alberta in conjunction with other provinces and states through the Northern Plains Conservation Network.

    Wood Bison – Wood Buffalo National Park ©C.Wallis

    Unfortunately, in Alberta free-ranging bison outside of the Bison Management Area in the northwest corner of Alberta are designated “livestock.” Because they are not considered wildlife, they have no status under Alberta’s Wildlife Act. In that northwest corner, bison is listed as endangered. AWA believes wild herds must be managed as wild, and that Alberta needs a strategy to differentiate the status for wild bison and domestic bison based on ownership. AWA supports the reintroduction of extirpated species and continues to advocate for the protection of wild areas that will enable bison to persist as a self-reproducing population in Alberta. For example, reintroduction into Suffield National Wildlife Area with its vast prairie grasslands could be considered an important area for reintroduction of Plains bison to move throughout its historic ranges.


    The status of both subspecies internationally, nationally and provincially is listed in the table below, as of June 2016.

    International status National status Provincial status in Alberta Regional Status
    Plains bison · IUCN – Near Threatened (2008)

    · U.S. Endangered Species Act – Endangered in Canada (1970)

    ·COSEWIC – Threatened (Nov 2013)

    ·SARA – No Schedule, No status

    Extirpated* Wild Species 2010: The General Status of Species in Canada

    ·Canada – Sensitive

    ·B.C. – May be at risk

    ·Saskatchewan – Sensitive

    ·Alberta, Yukon, NWT and Manitoba – At Risk

    Wood bison ·COSEWIC – Special Concern (Nov 2013)

    ·SARA – Schedule 1, Threatened

    ·Wildlife Act – Endangered**

    · General Status of Alberta Wild Species – At Risk

    *considered livestock; not listed under Alberta Wildlife Act

    ** only in NW Alberta, the range of the Hay-Zama herd. Free-ranging bison in the rest of the province are considered livestock; not listed under Alberta Wildlife Act



    Dramatic conservation measures were undertaken in the early part of the twentieth century to give bison a chance to survive, but the species continues to face many of the same threats that have caused their numbers to decline for the past 300 years.

    Habitat Loss

    A large part of Plains bison’s original range has been converted to agriculture or urbanized since European settlement. Habitat loss and fragmentation remains the greatest threat to bison conservation. Plains bison only occupy 0.5% of the historical range in Canada. Two major disturbance regimes, fire and flooding, have been absent or severely suppressed in the traditional range of bison, especially in northern Alberta. Fires were intentionally set by First Nations peoples to move herds, clear forests and renew grazing areas. Past fire suppression practices of resource management agencies throughout the province have caused the encroachment of forests onto meadow areas. Flooding was an equally important disturbance vector in northern Alberta along major waterways such as the Peace River, as it pushed back forests and renewed the wet meadow sedge and grass vegetation that bison depend on. Dam building, specifically the W.A.C. Bennet dam in British Colombia, has regulated flows for much of the Peace River Valley downstream and removed flooding from the landscape.

    Disease in Wood bison

    Tuberculosis and brucellosis are introduced livestock diseases that have been transmitted to some Wood bison herds. Anthrax, a bacterial disease, was a major cause of death for wood bison before 1978 and is also a threat: in a recent event, the Mackenzie herd decreased by 53% due to an outbreak of anthrax. In the Alberta Wildlife Act, diseased bison are considered non-wildlife and are not protected. In the legislation, “bison east of Highway 35 are assumed diseased and have been classified as non-wildlife.” COSEWIC has stated that populations have increased; however, their assessment does not consider that WBNP herd is not considered wildlife in Alberta. Discounting the large number of wild Wood bison that are present in the WBNP population significantly reduces the Canadian population and should be taken into consideration by COSEWIC. Until the WBNP herd are once again considered wildlife under the Alberta Wildlife Act, AWA does not support the down-listing of Wood bison.

    Pains Bison © C.Olson

    The Ronald Lake herd located southeast of Wood Buffalo National Park was tested between 2010 and 2014 and found to be disease-free. However, because the Ronald Lake herd is outside of Wood Buffalo National Park and east of Highway 35, it is not classified as wildlife. This caused controversy when poaching occurred in 2015. However, an amendment in 2016 in the Wildlife Regulation ensured the Ronald Lake herd receives the same protective status as non-game animals.

    Direct human impacts

    Like most wildlife, human-caused mortality from roads presents a severe threat to the viability of population growth, historical range restoration and landscape connectivity. For example, in a 2001 study, the Hay-Zama herd faced more mortality from vehicle collisions than predation and other natural causes combined. Further, bison outside the special management zone are not considered ‘wildlife’ by the provincial government, meaning bison fall through the cracks of legislated protection when they range freely and despite the endangered status of this animal, there are still legal hunts that do not even require a hunting license.

    Bison Reintroduction in Banff National Park

    The Reintroduction Plan for Plains Bison in Banff National Park was released in March 2015 by Parks Canada agency. The plan targets a maximum of 600-1000 individuals, starting by introducing a herd of 30-50 disease-free animals from Elk Island National Park to the Panther and Dormer rivers in the east-central portion of the park, by winter 2017.

    AWA is concerned about the following issues regarding the reintroduction into BNP:

    • Minimal use of appropriate fencing, allowing for connectivity in other wildlife populations and the free roaming of introduced bison.
    • National Parks and AEP staff must develop strong relationships with ranchers on the eastern slopes to effectively manage bison roaming outside of the park.
    • Spread of disease. If bison come into contact from cattle, there is risk of disease.

    Management of Plains bison

    The majority of Plains bison are privately owned, and legally considered livestock. The COSEWIC 2013 Assessment and Status Report on bison states, “People involved in the commercial bison industry own approximately 97.4% of all bison in Canada.”

    A strategy in Montana maintains a dual status for wild bison and domestic bison based on ownership. Their status depends on whether they are located on a commercial farm, a private conservation herd or in the wild. A similar strategy must be adopted in Alberta. Tools such as GPS collars for reintroduced herds will assist in their management. As well, education and awareness programs are necessary for reducing risks to visitors in reintroduced areas.

    COSEWIC 2013 names 1,200-1,500 Plains bison and 5,136-7,172 Wood bison wild mature individuals in Canada (Plains bison can be found in BC, Alberta and Saskatchewan; Wood bison can be found in Yukon, NWT, BC, Alberta and Manitoba). From the last census completed in 2011, there are 57,430 farmed bison in Alberta. COSEWIC does not consider the 10 conservation herds in Canada as ‘wild by nature’ as they are used for educational purposes and managed intensively.

    Legislative and Policy Obstacles

    In British Colombia and Saskatchewan, Plains bison are protected from unregulated hunting under each province’s Wildlife Act. Alberta and Manitoba consider Plains bison to be domestic animals.


    Two subspecies of bison have historically existed in Alberta: Plains bison (Bison bison bison) and Wood bison (Bison bison athabascae). There is ongoing debate as to the viability of treating Plains bison separately from Wood bison in management and status. AWA defines ‘wild’ bison as that which has not been subject to gene introgression through breeding with cattle.

    Bison are the largest terrestrial mammal in North America and live on average 15 years in the wild, but Plains bison can live up to 30 years, and Wood bison can live up to 40 years. Bison have low fecundity with males usually breeding at age 3 and females calving a single offspring at age 2.

    Bison are grazers, preferring wet meadows in the boreal eco-region and grassy areas of the prairies, occupying a unique niche among North American herbivores. First Nations people played an important role in the maintenance of high quality range areas for bison through the use of fire.

    Cow and Calf Bison ©C. Olson


    Prior to European settlement, an estimated 30 million bison roamed the continent. By 1888, populations were decimated leaving only 85 Plains bison in North America. Population declines were a result of:

    • Intentional extermination by the U.S. Federal Government to reduce First Nations food supply in the 18th century
    • Habitat loss due to agricultural fragmentation, fire suppression, and dam building
    • Overhunting

    Plains bison: occurs in only five isolated wild subpopulations in Canada, with one wild Plains bison herd of around 450 individuals in Elk Island National Park. There are 1,200-1,500 wild mature individuals in Canada, occupying less than 0.5% of original range.

    Wood bison: 3,536 bison (2,828 in the wild) free of disease. There are six subpopulations of Wood bison in Alberta: Wood Buffalo national Park; Elk Island National Park; Ronald Lake; Wentzel/Wabasca; Hay-Zama; and Etthithun. There are 5,136-7,172 wild mature individuals in Canada.


    Map of Alberta bison populations and historical distribution of Plains bison


    Alberta Wilderness Association chairs the Great Plains Conservation Network (GPCN) which has a Bison Working Group. “This working group includes GPCN partners across the plains engaged in bison restoration and large-scale prairie habitat protection. Efforts by committee members include promoting collaboration with Native American tribes with established conservation or cultural herds, national parks with bison as wildlife, the American Prairie Reserve and other partners with a high potential for bison restoration and an increased awareness of the importance of recognizing bison as wildlife. The Bison Committee supports the development of a strategy to establish a network of prairie reserves across multiple states from Mexico to Canada, where additional bison conservation herds could be established. The Committee is also engaged in cooperative efforts for creating a program for the translocation of bison from Yellowstone National Park—animals of high genetic value—to conservation herds on tribal and public lands across the Great Plains.” (GPCN website, 2020)

    February 2017

    In early February, a plains bison herd of 16 individuals is reintroduced to a “soft-release” pasture in Panther Valley in Banff National Park. The herd is expected to stay for 16 months and in the summer of 2018 released into a 1,200km2 area on the eastern edge of the park.

    January 2017

    Parks Canada responds to AWA’s letter with an addendum and summary of changes to the DEIS. AWA is pleased to see some of our feedback incorporated. Particularly, Parks Canada commits in the DEIS to “adhere to the existing Park Management Plan direction regarding minimal facility development and limited commercial opportunities in order to maintain the wilderness character and high ecological values present in the East Slopes area.” Other feedback from the addendum includes:

    “Parks Canada will conduct targeted surveys for rare and sensitive plants in the reintroduction zone in 2017″; “Parks Canada proposes to conduct this pilot project with a commitment to ongoing performance assessment and an in-depth 5 year evaluation to determine the feasibility-of and goals for longer-term bison restoration”; “Parks Canada continues to work closely with Alberta provincial counterparts to ensure there is agreement on how to manage bison in transboundary areas.”

    November 2016

    The Banff Bison Reintroduction Project’s Detailed Environmental Impact Assessment comes out for public comment. If the project receives public support, 12 pregnant two-year old cows and 4 two-year old bulls will be introduced to an 18-ha, enclosed ‘soft-release’ pasture in February 2017. Calving is known to bond bison to a particular place so they will be less likely to escape.

    July 2016

    The USDA National Park Service releases the Bison Resource Stewardship Plan Environmental Assessment for Badlands National Park, North Unit. The purpose of the plan is to expand the geographic bison range. Many environmental non-governmental organizations, including the World Wildlife Fund (WWF), support the initiative.

    AWA submits comments on the Wood Bison Recovery Strategy.

    June 2016

    A draft Recovery Strategy for Wood Bison comes out for public comment. The strategy proposes a short term objective to maintain disease-free status, population size, and range of all disease-free Wood Bison local populations, while the long term objective is to ensure the existence of at least 5 disease-free, genetically diverse, connected, self-sustaining, free-ranging local populations distributed throughout their original Canadian range. The objectives will not be achieved until population levels are sufficient to sustain traditional Aboriginal harvesting activities, consistent with Aboriginal and Treaty Rights of Aboriginal peoples of Canada.

    April 2016

    The Ronald Lake bison herd is now recognized as a Subject Animal under the Wildlife Regulation. This means the herd receives the same protection under the Wildlife Act and Regulation as Non-Game Animals.

    March 2016

    Montana’s Blackfeet reservation near Glacier National Park and Badger-Two Medicine wilderness receives a bison herd from Elk Island Park.

    “Rewilding” efforts continue outside of North America: a group of 11 European bison are reintroduced into state forests in the Netherlands. Herds also exist in Poland and Romania.

    February 2016

    Conservation groups take different positions on the reintroduction of bison to Banff National Park. AWA remains concerned about the use of fencing, management of bison roaming outside of the park and the associated issues of inter-breeding with domestic cattle and spread of disease, and the potential for increased commercialization of Banff National Park.

    October 2015

    AWA writes to Environment Canada urging the ministry to list Plains Bison as Threatened under Schedule 1 of Species at Risk Act, as well as urging Wood Bison not to be down-listed to Special Concern.

    July 2015

    An anthrax outbreak kills 53 bison in Wood Buffalo National Park. Anthrax outbreaks have occurred a dozen times since the 1960s.

    March 2015

    Parks Canada publish a Reintroduction Plan for bison in Banff National Park with a vision to “restore a wild, free-roaming bison population to Banff National Park in a way that supports ecosystem integrity, enriches and is compatible with other visitor experiences, facilitates cultural connections with the landscape and wildlife, and enhances learning and stewardship opportunities, both in the park and from afar.”

    February 2015

    A population study conducted in the Hay-Zama herd found 501 individuals. This is between the 400-600 herd size objective of the Alberta government, meaning a hunt can continue this year.

    December 2014

    The Hay-Zama herd 2013/14 hunt is suspended as a result of severe winter weather, which caused unusually high calf and adult bison mortality.

    June 2013

    According to an annual Progress Report, Alberta’s management of bison in northern Alberta continues to focus on minimizing the spread of tuberculosis and brucellosis from wild bison to domestic cattle. Long term, the plan is, apparently, to eliminate the disease risk, which would “allow the restoration of wild populations of wood bison across northern Canada.” Between 2009 and 2013 521 bison are killed from the Hay Zama hers, all of which were free of tuberculosis and brucellosis.

    April 2012

    The Athabasca Chipewyan First Nation propose a “Co-Management Plan” that would see the establishment of two “zones” – a Protection Zone and a Stewardship Zone – within ACFN homelands in northeastern Alberta, aimed at the protection and restoration of bison and caribou habitat. “The primary goal of the newly proposed strategy is to ‘provide a concrete vision and tool for sustaining the way of life of our Nation, particularly in relation to ACFN Homelands, and in the face of anticipated or proposed development.’ This includes proactive protection and restoration of habitat for all local populations of caribou and bison within their historical range in ACFN Homelands.”

    March 2012

    IUCN releases report, American Bison: Status Survey and Conservation Guidelines 2010, on the current status of American bison, in the wild and in conservation herds, and makes recommendations on how to ensure that the species is conserved for the future. “Although the effort to restore bison to the plains of North America is considered to be one of the most ambitious and complex undertakings in species conservation efforts in North America, it will only succeed if legislation is introduced at a local and national level, with significant funding and a shift in attitude towards the animal,” says Dr Simon Stuart, Chair of IUCN’s Species Survival Commission.

    Spring 2008

    A spring hunting season is brought in for the Hay Zama bison herd to “stop the Hay Zama herd from continuing to increase in numbers and distribution.” The intention is to prevent the “disease-free” herd from mixing with other herd known to be infected with tuberculosis and brucellosis.

    April 2008

    Aboriginals discover two kill sites in Caribou Mountain Wildland Provincial Park. It appears the animals were killed as trophies, as the heads and hides had been removed, but the meat was left to rot.

    July 4, 2007

    Two men are fined a total of $17,000 in provincial court in relation to the poaching of a bison calf in the Hay-Zama area.

    December 2005

    American Prairie Foundation, in cooperation with World Wildlife Fund, release 16 bison on a portion of 32,000 acres in the prairie south of Malta, Montana. This area is the core of their new prairie reserve, intended to restore native wildlife, including genetically important bison. This is one of the few wild herds free of any bison-cattle hybrids, and free from brucellosis.

    August 2005

    Federal Environment Minister, Stephane Dion, refuses to list plains bison to the list of species protected under the Species at Risk Act, despite a recommendation in May 2004 by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) to do so. Only around 8,000 genetically pure plains bison still exist, mostly in the U.S and at Elk Island National Park. AWA believes that economic interests were given undue weight in the decision not to list plains bison; effectively the interests of a handful of bison farmers are being put ahead of the interests of an endangered native species.

    June 2004

    The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) recommends that the Plains bison should be added to the list of species protected under the Species at Risk Act. Marco Festa-Bianchet, chair of COSEWIC, comments that it is important to “redouble our efforts to protect species at risk and their habitats.”


    Since 1971, disease free populations have increased 1000% to 4800 animals, while the originally re-introduced herd in Wood Buffalo National Park has declined 80% to 2900.


    The government amends the Public Lands Act to allow commercial bison grazing on public lands.


    Alberta Government lists bison as ‘At risk’ by the Fish and Wildlife Division and are legally designated as ‘Endangered’ by the Wildlife Act.
    The Heart Lake Band in east-central Alberta receives 53 bison from Elk Island National Park to begin the restoration of ecological and cultural processes associated with bison.

    The government holds multistakeholder meetings with several groups to determine whether commercial bison should be allowed to graze on public lands.


    COSEWIC re-assess the status of wood bison and maintains the ‘Threatened’ status.
    Alberta government launches an initiative to increase commercial production of bison in the northwest of the province. Bison farms are increasing at a rate of 15% a year with commercial populations increasing at a rate of 25% a year. Present commercial population is over 20,000 bison.


    Alberta establishes the Bison Management Area in a buffer around the Hay-Zama complex. Bison in this area are protected from hunting.


    Hay-Zama herd established to create a disease-free, free-ranging population in Alberta in conjunction with the Dene Tha’ First Nation. Herd has expanded from 29 to 49 by 1993 and over 200 by 2001.


    Lyle Fullerton writes (Western Canada Outdoors, Sept.-Oct. 1982): “Alberta presently has numerous bison farms, utilizing animals for the production of meat. Some of these ventures have realized “paid fee hunting” as another source of income. I guess if you have $3500 – $5000 laying around, you can enjoy a quiet “hunt” of a domestic animal in the seclusion of electrically confined enclosures….The decision was made some time ago that now that we have bison farms and these animals just don’t like to have a fence come between themselves and other farmers crops, they should be taken out of the Wildlife Act and be called domestic animals. The depredation budget operated by the Fish and Wildlife Branch no longer takes a beating when these animals get loose. had the decision been made to have the owners entirely responsible for his animals actions in the first place, the bison would not have been degraded to the level of a hereford beast. Will the same thing happen to elk, moose or deer, what next? Who will now take over registration and administration of the Boone and Crockett records in Western Canada? The department of agriculture? Hereford cattle may make it into the record book yet!”


    Farming, including commercial bison operations, expand throughout Alberta and to within 70km of Wood Buffalo National Park.


    21 bison from Wood Buffalo National Park are moved to Elk Island National Park and, after some disease management, the herd continues to grow successfully.


    18 bison of the newly discovered herd are shipped to the western end of Great Slave Lake where a bison sanctuary is established. Herd expands successfully over subsequent years and becomes the largest free-roaming herd of wood bison in North America to the present day.


    An isolated, hence disease free and genetically local, population of wood buffalo are found in a remote area of Wood Buffalo National Park.


    Wood Buffalo National Park herd approximately 12,000. Diseases and genetic dilution of local stock are causing concern among conservationists.


    6673 Bison transferred from Buffalo Park to Wood Buffalo National Park. Immediately 400 bison break away from larger herd and migrate to the Sweetgrass area. The park is expanded to encompass this area. Introduced bison outnumber remnant population 4:1.


    Canadian government buys 709 bison from a Montana rancher and ships them to Elk Island National Park and eventually to Buffalo Park near Wainwright Alberta.


    Wood bison population reduced to a remnant herd of 250 near Great Slave Lake.


    Estimated plains bison population less than 1,200 in all of north America


    Massive declines in bison numbers and range. Causes are clear, including intentional extermination by the US Government, over hunting and human settlement.

    mid-17th century

    Estimates of 2-60 million bison exist throughout North America. In addition, an estimated 168 000 wood bison range from the present northern Alberta, north-eastern British Columbia, southern Yukon, the interior of Alaska and the south-western Northwest Territories.

    January 25, 2021

    They’re Still Back… Bison in Banff National Park

    Wild Lands Advocate update by: Karsten Heuer Click here for a pdf version of the…

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    December 2, 2020

    News Release: Wood Buffalo National Park Conservation Outlook of ‘Significant Concern’

    Indigenous communities and environmental organizations say more action is needed Edmonton, AB – The ongoing…

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    December 2, 2020

    Wood Buffalo Action Plan Implementation, Perspective of Local Indigenous Communities and Environmental Groups

    Letter to the Director of UNESCO’s World Heritage Centre concerning Wood Buffalo National Park: December…

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    October 26, 2020

    AWA to Participate in Managing the Ronald Lake Bison Herd

    Wild Lands Advocate update by: Christyann Olson, AWA Executive Director Click here for a pdf…

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    November 23, 2019

    AWA Comments on Teck Frontier Oil Sands Mine

    AWA urges the federal government to reject Teck’s Frontier mine proposal, in a letter submitted…

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    March 11, 2019

    Kitaskino Nuwenëné Wildland Provincial Park: A New Boreal Gem for Alberta

    Permanent protection over a significant area of lands south of Wood Buffalo National Park that…

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    March 1, 2019

    Welcome to Kitaskino Nuwenëné Wildland Provincial Park

    Wild Lands Advocate Update by Carolyn Campbell You can download a pdf version of this…

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    December 13, 2018

    Biodiversity Stewardship Area Proposal South of Wood Buffalo National Park Welcomed

    Today the Alberta government proposed permanent protection of a significant area of lands south of…

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    June 1, 2017

    Taking a Trip to an Island of Conservation

    June 2017 Wildlands Advocate article, by Ian Urquhart Imagine a national park where you can hike for…

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    March 10, 2017

    Canada-Alberta Failing to Address Peace-Athabasca Delta Threats

    International investigators have found major shortcomings in federal and provincial governments’ management of industrial impacts…

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    March 1, 2017

    Update: Bison hooves hit the ground in Banff National Park

    March 2017 Wildlands Advocate article, by Andrea Johancsik By the time you read this Banff National Park…

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    November 30, 2016

    AWA Letter: Banff Bison Reintroduction DEIA Submission

    November 30, 2016 Kendra van Dyk Integrated Land Use, Policy and Planning Parks Canada 101…

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