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Winter Wren, Christian Artuso
Photo © Christian Artuso

Photo: Christian Artuso
Breeding evidence - Winter Wren
Breeding evidence
Probability of observation - Winter Wren
Probability of observation
Elevation plot - Winter Wren
Elevation plot

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Winter Wren
Troglodytes hiemalis
Landscape associations:

Click on plot to view table of mean abundance
Elevation range:
354 - 1181 m
Conserv. status:
Not at risk
Global importance
of B.C. population:
6
Number of squares
ConfirmedProbablePossiblePoint counts
1 1 23 6
Long-term BBS trends
RegionYearsTrend (conf. interv.) Reliab.
Canada1970 - 2012 1.02 (0.139 - 1.85)Medium

Mean abundance by region

Bird Conservation Regions [plot]
NW Interior ForestBoreal Taiga PlainsGreat BasinNorthern RockiesN. Pacific Rainforest
 0.05     
Ecoprovinces [plot]
N. Boreal Mountains Taiga Plains Boreal Plains Georgia Depression Sub-Boreal Interior
 0.08 0.02   
S. Interior Mountains Central Interior Southern Interior S. Alaska Mountains Coast & Mountains
       

Mean abundance by habitat [plot]

Boreal Altai Fescue AlpineBoreal White and Black SpruceBunchgrassCoastal Douglas-fir
 0.05  
Coastal Mountain-heather AlpineCoastal Western HemlockEngelmann Spruce -- Subalpine FirInterior Cedar -- Hemlock
    
Interior Douglas-firInterior Mountain-heather AlpineMontane SpruceMountain Hemlock
    
Ponderosa PineSpruce -- Willow -- BirchSub-Boreal Pine -- SpruceSub-Boreal Spruce
    

Characteristics and Range A secretive species of dense woods, this small bird is more likely heard than seen, with its loud complicated songs and "kimp kimp" call notes. It is found breeding in the boreal coniferous and hardwood forest belt from northeastern British Columbia to the Atlantic Coast of Canada and the northeastern United States, and south through the Appalachian Mountains, and migrates short distances to winter across the southeastern quarter of North America. The Pacific Wren was recently split from this species and it is the Pacific Wren that is found across all of British Columbia except the northeast (Toews and Irwin 2008, 2012).

Distribution, Abundance, and Habitat In British Columbia, the Winter Wren is found in the Taiga and Boreal Plains ecoprovinces and in the eastern foothills of the Rocky Mountains in the easternmost portion of the Sub-Boreal Interior Ecoprovince. Whilst the Atlas confirms breeding in only one 10-km square in the Peace River drainage, the species is likely breeding in forested habitats over much of this range. In the field Winter Wren is not easily separated from Pacific Wren; where there is doubt over which of the two species was detected at a given location, those records are omitted from Atlas analyses.

The Probability of Observation model and point count data both show the centre of abundance to be below 500 m elevation in the Fort Nelson River floodplain of the Taiga Plains Ecoprovince. Campbell et al. (1997), while not dealing with the Winter Wren as a species separate from the Pacific Wren, regarded the species as only casual in the Taiga Plains Ecoprovince. Atlas work shows the species to be more abundant here than was previously known.

Conservation and Recommendations The Winter Wren was moved from the Yellow List (not at risk) to the Blue List (Vulnerable) by the British Columbia Conservation Data Centre in 2015. Guidelines for forest operations for Pacific Wren have been developed (Altman 1999, 2005) and should be evaluated for use for Winter Wren in northeast British Columbia. The range of this species and its overlap with Pacific Wren is still not clearly understood, so birders can provide valuable information by carefully noting which species they see or hear and documenting their observations in available databases (e.g., eBird).

David F. Fraser

Recommended citation: Fraser, D.F. 2015. Winter Wren in Davidson, P.J.A., R.J. Cannings, A.R. Couturier, D. Lepage, and C.M. Di Corrado (eds.). The Atlas of the Breeding Birds of British Columbia, 2008-2012. Bird Studies Canada. Delta, B.C. http://www.birdatlas.bc.ca/accounts/speciesaccount.jsp?sp=EWWR&lang=en [11 Dec 2018]

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