Northern Shrike

Lanius borealis (Lanius excubitor)

General Status Rank: 
Secure
ELCODE: 
ABPBR01020
Common Name: 
Northern Shrike
Scientific Name: 
Lanius borealis (Lanius excubitor)
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Taxonomy
Group: 
Bird
Kingdom: 
Animalia
Phylum: 
Chordata
Class: 
Aves
Order: 
Passeriformes
Family: 
Laniidae
References: 
B004
A2018002
General Biology

Female Age at Maturity

1
References: 
LA42

Longevity

no data
References: 
LA42

Economic/Human Considerations

Non-game species
References: 
H129
Habitat
sparse woods and bogs
References: 
B004
H129
Distribution

Ecozones

Southern Arctic, Taiga Cordillera, Taiga Plains, Taiga Shield, Boreal Cordillera, Boreal Plains
References: 
B004

Distribution

0.78; Range extent most of mainland NWT, or approx. 975,000 sq km estimated from range map (Canadian Wildlife Service – Prairie & Northern Region 2009. Bird distributions in Nunavut & the Northwest Territories: 2009 Review.)
Score: 
G
References: 
B004
Winter Distribution Description: 
from breeding range to southern US

Number of Occurrences

Many observations from Mack Delta to Hay River, Dehcho to the barrenlands in eBird and the NWT-NU Checklist program (DD15; CWS) across the NWT (W113 Accessed: Date January 25, 2015).)
Score: 
D
References: 
W113
DD15

Historical Distribution

Likely similar to current dist.
References: 
H129

Area of Occupancy

stable? Need data to confirm for NWT
Score: 
-
References: 
LA12
W113
Population

Population Size

Not enough data to generate population estimates (DD16 Assessed on <January 25, 2015)
References: 
LA01
DD16

Density

Territories at Peters Lake AK = 100-150 ha; Territories not contiguous
Trends

Trends

Not enough data on this species to generate trends through either the BBS or Liard Valley Long-term Monitoring Program. CBC data suggests the population has been stable over the last 10 years (-0.8% per year). (Environment Canada, 2011. Status of Birds in Canada – 2011 Website, Data-version 2011. Environment Canada, Gatineau, Quebec, K1A 0H3)
Score: 
G
References: 
LA12
W113
Threats

Threats

Little human disturbance in the NWT and threats are thought to be low.
Score: 
C
References: 
LA42
H307

Intrinsic Vulnerability

Limited effects of climate change likely in next 10 yrs
Score: 
-
References: 
LA42
H307
General Status Rank
Rank: 
Secure
Status Rank Description: 
Partners in Flight North American population monitoring status = inadequate northern coverage; PIF (North America) "Stewardship species" (high percentage of global population in a single biome) for northern avifaunal biome (LA01); may be susceptible to same threats as Loggerhead Shrike? (LA12) Not enough information to estimate population size or NWT trend.
S Rank: 
S5
Decision Process Description: 
Drafted by Leslie Wakelyn and S. Carriere mostly based on printed material in 2000. Reviewed in 2005 by ENR.; Reviewed in 2010;no change; Reviewed by Emily Upham-Mills CWS in 2015, suggested change to undetermined , remain secure due to large distribution and no threats known in NT (SC)
Last Updated: 
February 9, 2015

References

Age Of Maturity

  • Cade, T.J., Atkinson, E.C. (2002) Northern Shrike in Birds of North America. No.671 The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. - LA42 Return

Area of Occupancy

  • Dunn, E. (2005) National Action Needs for Canadian Landbird Conservation, Version 1. Canadian Wildlife Service Landbird Committee, Canadian Wildlife Service, Ottawa, Canada http://www.cws-scf.ec.gc.ca/birds/action/index_e.cfm - LA12 Return
  • Audubon and Cornell Lab of Ornithology and Bird Studies Canada (2015) http://ebird.org/content/canada/ - W113 Return

Economic Status

  • Wakelyn, Leslie (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H129 Return

Ecozones

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Habitat

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • Wakelyn, Leslie (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H129 Return

Historical Distribution

  • Wakelyn, Leslie (2000) Pers. communication. Wildlife biologist, CWS, Yellowknife - H129 Return

Intrinsic Vulnerability

  • Cade, T.J., Atkinson, E.C. (2002) Northern Shrike in Birds of North America. No.671 The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. - LA42 Return
  • Emily Upham-Mills and Rhiannon Pankratz (2015) e-copy - H307 Return

Longevity

  • Cade, T.J., Atkinson, E.C. (2002) Northern Shrike in Birds of North America. No.671 The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. - LA42 Return

NWT Known Subspecies

Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
,
American Ornithologists' Union (AOU). Chesser, R.T., K.J. Burns, C. Cicero, J.L. Dunn, A.W. Kratter, I.J. Lovette, P.C. Rasmussen, J.V. Remsen, Jr., J.D. Rising, D.F. Stotz, and K. Winker. (2017) Fifty-eighth Supplement to the American Ornithologists' Union Check-list of North American Birds. The Auk 134:751-773.. The Auk 134:751-773. 134:751-773. - A2018002 Return

Number of Occurrences

  • Audubon and Cornell Lab of Ornithology and Bird Studies Canada (2015) http://ebird.org/content/canada/ - W113 Return
  • CWS (2014) CWS Unpublished Data - DD15 Return

Population Size

Rich, T.D., Beardmore, C.J., Berlanga, H., Blancher, P.J., Bradstreet, M.S.W., Butcher, G.S., Demarest, D.W Dunn, E.H., Hunter, W.C., Inigo-Elias, E.E., Kennedy, J.A., Martell, A.M., Panjabi, A.O.,et al. (2004) Partners in Flight North American Landbird Conservation Plan (janv-04). Cornell Lab of Ornithology, Ithica, NY http://www.partnersinflight.org/cont_plan/default.htm - LA01 Return
,
Partners in Flight Science Committee 2013. Population Estimates Database, version 2013. Available at http://rmbo.org/pifpopestimates. Accessed on <January 25, 2015>. (2013) http://rmbo.org/pifpopestimates - DD16 Return

Range Extent

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return

Short Term Trends

  • Dunn, E. (2005) National Action Needs for Canadian Landbird Conservation, Version 1. Canadian Wildlife Service Landbird Committee, Canadian Wildlife Service, Ottawa, Canada http://www.cws-scf.ec.gc.ca/birds/action/index_e.cfm - LA12 Return
  • Audubon and Cornell Lab of Ornithology and Bird Studies Canada (2015) http://ebird.org/content/canada/ - W113 Return

Taxonomy

  • Godfrey WE (1986) The Birds of Canada. National Museums of Canada Revised Edition RWED Library Call #QL685.G6 - B004 Return
  • American Ornithologists' Union (AOU). Chesser, R.T., K.J. Burns, C. Cicero, J.L. Dunn, A.W. Kratter, I.J. Lovette, P.C. Rasmussen, J.V. Remsen, Jr., J.D. Rising, D.F. Stotz, and K. Winker. (2017) Fifty-eighth Supplement to the American Ornithologists' Union Check-list of North American Birds. The Auk 134:751-773.. The Auk 134:751-773. 134:751-773. - A2018002 Return

Threats

  • Cade, T.J., Atkinson, E.C. (2002) Northern Shrike in Birds of North America. No.671 The Academy of Natural Sciences and The American Ornithologists' Union Philadelphia and Washington, D.C. - LA42 Return
  • Emily Upham-Mills and Rhiannon Pankratz (2015) e-copy - H307 Return