Warning This Web page has been archived on the Web.

Archived Content

Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of archiving. Web pages that are archived on the Web are not subject to the Government of Canada Web Standards, as per the Policy on Communications and Federal Identity.

Skip booklet index and go to page content

Canadian Species at Risk

Record of status reassessments

A short history is provided for each species that has been reassessed by COSEWIC, including date(s) of assessment and the status assigned. In October 1999 COSEWIC began using quantitative criteria to augment the earlier method of using status definitions to assign status. For species assessed since October 1999, the type of status report used as the basis for reassessment is indicated. Update reports focus on changes in the biological and threat information that has become available since the last time a report was prepared. For some species, COSEWIC deemed the existing report suitable for reassessment.

Acadian Flycatcher
Designated Endangered in April 1994. Status re-examined and confirmed in November 2000. Last assessment based on an update status report.
AlleghenyMountainDusky Salamander
Designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001. Last assessment based on an existing status report with an addendum.
American Badger
Designated Not at Risk in April 1979. The original Canada-wide designation was de-activated in May 2000 when the American Badger was split according to subspecies.
American Badger jacksoni subspecies
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000. The jacksoni subspecies was designated Endangered. Last assessment based on an update status report.
American Badger jeffersonii subspecies
The species was considered a single unit and designated Not at Risk in 1979. Each subspecies was given a separate designation in May 2000. The jeffersonii subspecies was designated Endangered. Last assessment based on an update status report.
American Badger taxus subspecies
Entire Canadian range was designated as Not at Risk in 1979. Each subspecies was given a separate designation in May 2000. The taxus subspecies was designated Not at Risk. Last assessment based on an update status report.
American Black Bear
Designated Not at Risk in April 1998 and in April 1999.
American Chestnut
Designated Threatened in April 1987. Status re-examined and designated Endangered in November 2004. Last assessment based on an update status report.
 American Ginseng
Designated Threatened in April 1988. Status re-examined and designated Endangered in April 1999. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
 American Water-willow
Designated Threatened in April 1984. Status re-examined and confirmed in May 2000. Last assessment based on an update status report.
American White Pelican
Designated Threatened in April 1978. Status re-examined and designated Not at Risk in April 1987.
Ancient Murrelet
Designated Special Concern in April 1993. Status re-examined and confirmed in November 2004. Last assessment based on an update status report.
AnticostiAster
Designated Threatened in April 1990. Status re-examined and confirmed in May 2000. Last assessment based on an update status report.
AthabascaThrift
Designated Threatened in April 1981. Status re-examined and designated Special Concern in April 1999. Status re-examined and confirmed in May 2002. Last assessment based on an existing status report.
Atlantic Cod
Designated Special Concern in April 1998. Split into four populations in May 2003. The original designation was de-activated. Last assessment based on an update status report.
Atlantic Cod (Arctic population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Arctic population was designated Special Concern. Last assessment based on an update status report.
Atlantic Cod (Laurentian North population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Laurentian North population was designated Threatened. Last assessment based on an update status report.
Atlantic Cod (Maritimes population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Maritimes population was designated Special Concern. Last assessment based on an update status report.
Atlantic Cod (Newfoundland and Labrador population)
The species was considered a single unit and designated Special Concern in April 1998. When the species was split into separate populations in May 2003, the Newfoundland and Labrador population was designated Endangered. Last assessment based on an update status report.
Atlantic Walrus (Northwest Atlantic population)
Extirpated around 1850. Designated Extirpated in April 1987. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Atlantic Whitefish
Designated Endangered in April 1984. Status re-examined and confirmed in November 2000. Last assessment based on an update status report.
Aurora Trout
Designated Endangered in April 1987. Status re-examined and confirmed in May 2000. Last assessment based on an update status report.
Baird's Sparrow
Designated Threatened in April 1989. Status re-examined and designated Not at Risk in April 1996.
Banded Killifish (Newfoundland population)
Designated Special Concern in April 1989. Status re-examined and confirmed in May 2003. Last assessment based on an update status report.
BanffLongnose Dace
Extinct since 1986. Designated Extinct in April 1987. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Banff Springs Snail
Designated Threatened in April 1997. Status re-examined and designated Endangered in May 2000. Last assessment based on an existing status report.
Barn Owl
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The original designation for the Canadian range of the Barn Owl was de-activated.
Barn Owl (Eastern population)
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The Eastern population was designated Endangered. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Barn Owl (Western population)
The species was considered a single unit and designated Special Concern in April 1984. In April 1999, the Western and Eastern populations were assessed separately. The Western population was designated Special Concern. Status re-examined and confirmed in November 2001. Last assessment based on an existing status report.
Barren-ground Caribou (Dolphin and Union population)
The original designation considered a single unit that included Peary Caribou, Rangifer tarandus pearyi, and what is now known as the Dolphin and Union population of the Barren-ground Caribou, Rangifer tarandus groenlandicus. It was assigned a status of Threatened in April 1979. Split to allow designation of three separate populations in 1991: Banks Island (Endangered), High Arctic (Endangered) and Low Arctic (Threatened) populations. In May 2004 all three population designations were de-activated, and the Peary Caribou, Rangifer tarandus pearyi, was assessed separately from the Barren-ground Caribou (Dolphin and Union population), Rangifer tarandus groenlandicus. The Dolphin and Union population is comprised of a portion of the former "Low Arctic population", and it was designated Special Concern in May 2004. Last assessment based on an update status report.
Bashful Bulrush
Designated Special Concern in April 1986. Status re-examined and designated Endangered in May 2000. Last assessment based on an update status report.
Bearded Owl-clover
Designated Endangered in April 1998. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Beluga Whale (Cumberland Sound population)
The Southeast Baffin Island-Cumberland Sound population was designated Endangered in April 1990. In May 2004, the structure of the population was redefined: the Southeast Baffin Island animals (formerly part of the Southeast Baffin Island-Cumberland Sound population) were included as part of the Western Hudson Bay population. The newly defined "Cumberland Sound population" was designated Threatened in May 2004. Last assessment based on an update status report.
Beluga Whale (Eastern Beaufort Sea population)
Designated Not at Risk in April 1985 and in May 2004. Last assessment based on an update status report.
Beluga Whale (Eastern High Arctic - Baffin Bay population)
Designated Special Concern in April 1992. Status re-examined and confirmed in May 2004. Last assessment based on an update status report.
Beluga Whale (Eastern Hudson Bay population)
Designated Threatened in April 1988. Status re-examined and designated Endangered in May 2004. Last assessment based on an update status report.
Beluga Whale (Southeast Baffin Island-Cumberland Sound population)
Designated Endangered in April 1990. In May 2004, both the Southeast Baffin Island-Cumberland Sound population and the Western Hudson Bay population (original) were de-activated to denote transfer of the Southeast Baffin Island animals from the former population grouping to the latter. The two new populations are called: Cumberland Sound population and Western Hudson Bay population. Last assessment based on an update status report.
Beluga Whale (St. Lawrence Estuary population)
Designated Endangered in April 1983. Status re-examined and confirmed in April 1997. Status re-examined and designated Threatened in May 2004. Last assessment based on an update status report.
Beluga Whale (Ungava Bay population)
Designated Endangered in April 1988. Status re-examined and confirmed in May 2004. Last assessment based on an update status report.
Beluga Whale (Western Hudson Bay population)
The Western Hudson Bay population (original) was designated Not at Risk in April 1993. In May 2004, the structure of the population was redefined: the Southeast Baffin Island animals (formerly part of the Southeast Baffin Island-Cumberland Sound population) were included as part of the Western Hudson Bay population. The Western Hudson Bay population was designated Special Concern in May 2004. Last assessment based on an update status report.
Beluga Whale (Western Hudson Bay population, original designation)
Designated Not at Risk in April 1993. In May 2004, both the Southeast Baffin Island-Cumberland Sound population and the Western Hudson Bay population (original) were de-activated to denote transfer of the Southeast Baffin Island animals from the former population grouping to the latter. The two new populations are called: Cumberland Sound population and Western Hudson Bay population. Last assessment based on an update status report.
Benthic Enos Lake Stickleback
Original designation (including both Benthic and Limnetic species) was Threatened in April 1988. Split into two species when re-examined in November 2002 and the Benthic Enos Lake Stickleback was designated Endangered. Last assessment based on an update status report.
Benthic Hadley Lake Stickleback
Extinct in 1999. Designated Extinct in April 1999. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Benthic Paxton Lake Stickleback
Designated Threatened in April 1998. Status re-examined and confirmed in April 1999. Status re-examined and designated Endangered in May 2000. Last assessment based on an existing status report.
Benthic Vananda Creek Stickleback
Designated Threatened in April 1999. Status re-examined and designated Endangered in May 2000. Last assessment based on an existing status report.
Bering Cisco
Species considered in April 1990 and placed in the Data Deficient category. Re-examined in November 2004 and designated Special Concern. Last assessment based on an update status report.
Bering Wolffish
Designated Special Concern in April 1989. Species considered in November 2002 and placed in the Data Deficient category. Last assessment based on an update status report.
Bigmouth Shiner
Designated Special Concern in April 1985. Status re-examined and designated Not at Risk in November 2003. Last assessment based on an update status report.
Bird's-foot Violet
Designated Threatened in April 1990. Status re-examined and designated Endangered in May 2002. Last assessment based on an update status report.
Black Redhorse
Designated Threatened in April 1988. Status re-examined and confirmed in May 2005. Last assessment based on an update status report.
Black Tern
Designated Not at Risk in April 1988 and in April 1996.
Black-footed Ferret
Extirpated by 1974. Designated Extirpated in April 1978. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Blackline Prickleback
Designated Special Concern in April 1989. Species considered in May 2003 and placed in the Data Deficient category. Last assessment based on an update status report.
Blackstripe Topminnow
Designated Special Concern in April 1985. Status re-examined and confirmed in May 2001. Last assessment based on an update status report.
Black-tailed Prairie Dog
Designated Special Concern in April 1978. Status re-examined and confirmed in April 1988, April 1999 and November 2000. Last assessment based on an existing status report.
Blanding's Turtle (Nova Scotia population)
Designated Threatened in April 1993. Status re-examined and designated Endangered in May 2005. Last assessment based on an update status report.
Blue Ash
Designated Threatened in April 1983. Status re-examined and designated Special Concern in November 2000. Last assessment based on an update status report.
Blue Racer
Designated Endangered in April 1991. Status re-examined and confirmed in May 2002. Last assessment based on an update status report.
Blue Walleye
Extinct since 1965. Designated Extinct in April 1985. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Blue Whale
The species was considered a single unit and designated Special Concern in April 1983. In May 2002, the species was split into two populations: Blue Whale (Atlantic population) and Blue Whale (Pacific population). The Atlantic population and the Pacific populations were both designated Endangered in May 2002. The original designation for Blue Whale was de-activated.
Blue Whale (Atlantic population)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Atlantic population was designated Endangered in May 2002. Last assessment based on an update status report.
Blue Whale (Pacific population)
The species was considered a single unit and designated Special Concern in April 1983. Split into two populations in May 2002. The Pacific population was designated Endangered in May 2002. Last assessment based on an update status report.
Bluehearts
Designated Threatened in April 1985. Status re-examined and designated Endangered in April 1998. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Blunt-lobed Woodsia
Designated Threatened in April 1994. Status re-examined and designated Endangered in May 2000. Last assessment based on an existing status report.
Bowhead Whale (Bering-Chukchi-Beaufort population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Western Arctic population was designated Endangered in April 1986. The population was renamed to "Bering-Chukchi-Beaufort population" and designated Special Concern in May 2005. Last assessment based on an update status report.
Bowhead Whale (Davis Strait-Baffin Bay population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Eastern Arctic population was not re-evaluated in April 1986, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the Davis Strait-Baffin Bay population was designated Threatened. Last assessment based on an update status report.
Bowhead Whale (Eastern and Western Arctic populations)
Designated Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow a separate designation for the Western Arctic population in April 1986. The original designation was de-activated.
Bowhead Whale (Eastern Arctic population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. Eastern Arctic population was not re-evaluated, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the original designation was de-activated. Last assessment based on an update status report.
Bowhead Whale (Hudson Bay-Foxe Basin population)
The "Eastern and Western Arctic populations" were given a single designation of Endangered in April 1980. Split into two populations (Eastern Arctic and Western Arctic) to allow separate designations in April 1986. The Eastern Arctic population was not re-evaluated in April 1986, but retained the Endangered status of the original "Eastern and Western Arctic populations". The Eastern Arctic population was further split into two populations (Hudson Bay-Foxe Basin population and Davis Strait-Baffin Bay population) in May 2005, and the Hudson Bay-Foxe Basin population was designated Threatened. Last assessment based on an update status report.
Branched Bartonia
Designated Special Concern in April 1992. Status re-examined and designated Threatened in November 2003. Last assessment based on an update status report.
Bridle Shiner
Designated Special Concern in April 1999. Status re-examined and confirmed in November 2001. Last assessment based on an existing status report with an addendum.
Brindled Madtom
Designated Special Concern in April 1985. Status re-examined and designated Not at Risk in May 2001. Last assessment based on an update status report.
Buffalograss
Designated Special Concern in April 1998. Status re-examined and designated Threatened in November 2001. Last assessment based on an existing status report.
Burrowing Owl
Designated Threatened in April 1979. Status re-examined and confirmed in April 1991. Status re-examined and designated Endangered in April 1995. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Butler's Gartersnake
Designated Special Concern in April 1999. Status re-examined and designated Threatened in November 2001. Last assessment based on an existing status report.
CanadaLynx
Designated Not at Risk in April 1989 and in May 2001. Last assessment based on an update status report.
Caribou dawsoni subspecies
Extinct by the 1920s. Designated Extinct in April 1984. Status re-examined and confirmed in May 2000. Last assessment based on an update status report.
Carmine Shiner
Designated Special Concern in April 1994. Status re-examined and designated Threatened in November 2001. Last assessment based on an existing status report.
Caspian Tern
Designated Special Concern in April 1978. Status re-examined and designated Not at Risk in April 1999.
Central Stoneroller
Designated Special Concern in 1985. Status re-examined and designated Not at Risk in 1998.
Cerulean Warbler
Designated Special Concern in April 1993. Status re-examined and confirmed in May 2003. Last assessment based on an update status report.
Channel Darter
Designated Threatened in April 1993. Status re-examined and confirmed in May 2002. Last assessment based on an update status report.
Chiselmouth
Species considered in April 1997 and placed in the Data Deficient category. Re-examined in May 2003 and designated Not at Risk. Last assessment based on an update status report.
Climbing Prairie Rose
Designated Special Concern in April 1986. Status re-examined and designated Threatened in May 2002. Status re-examined and designated Special Concern in May 2003. Last assessment based on an existing status report with an addendum.
Coastal Giant Salamander
Designated Special Concern in April 1989. Status re-examined and designated Threatened in November 2000. Last assessment based on an update status report.
Coastal Wood Fern
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2001. Last assessment based on an existing status report.
Coeur d'AleneSalamander
Designated Special Concern in April 1998. Status re-examined and confirmed in November 2001. Last assessment based on an existing status report with an addendum.
Colicroot
Designated Threatened in April 1988. Status re-examined and confirmed in November 2000. Last assessment based on an update status report.
Common Hoptree
Designated Special Concern in April 1984. Status re-examined and designated Threatened in November 2002. Last assessment based on an update status report.
Cooper's Hawk
Designated Special Concern in April 1983. Status re-examined and designated Not at Risk in April 1996.
Copper Redhorse
Designated Threatened in April 1987. Status re-examined and designated Endangered in November 2004. Last assessment based on an update status report.
Cougar (Eastern population)
Designated Endangered in April 1978. Species considered in April 1998 and placed in the Data Deficient category.
Crooked-stem Aster
Designated Special Concern in April 1999. Status re-examined and designated Threatened in May 2002. Last assessment based on an existing status report.
Cucumber Tree
Designated Endangered in April 1984. Status re-examined and confirmed Endangered in April 1999 and in May 2000. Last assessment based on an existing status report.
Cultus Pygmy Sculpin
Designated Special Concern in April 1997. Status re-examined and designated Threatened in November 2000. Last assessment based on an existing status report.
Deepwater Cisco
Extinct since 1952. Designated Extinct in April 1988. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.
Deerberry
Designated Threatened in April 1994. Status re-examined and confirmed in November 2000. Last assessment based on an update status report.
Deltoid Balsamroot
Designated in April 1996 as Endangered. Status re-examined and confirmed Endangered in May 2000. Last assessment based on an existing status report.
Dense Blazing Star
Designated Special Concern in April 1988. Status re-examined and designated Threatened in May 2001. Last assessment based on an update status report.
Drooping Trillium
Designated Endangered in April 1996. Status re-assessed and confirmed in May 2000. Last assessment based on an existing status report.
Dwarf Hackberry
Designated Special Concern in April 1985. Status re-examined and designated Threatened in November 2003. Last assessment based on an update status report.
Dwarf Wedgemussel
Extirpated by 1968. Designated Extirpated in April 1999. Status re-examined and confirmed in May 2000. Last assessment based on an existing status report.