Bewick's Wren
(Thryomanes bewickii)

Summary

Picture of bird
© Tony Battiste
For additional photos and vocalizations, visit Dendroica. (Link opens in a new window.)

The Canadian population of the Bewick's Wren is largely confined to the south coast of British Columbia. It formerly bred in southern Ontario, but that small population had disappeared by the 1970s (Godfrey 1986, Brewer 2007) when the Bewick's Wren population throughout eastern North America underwent a significant decline (Kennedy and White 2013). The species is well surveyed by the Breeding Bird Survey, results from which show a large decrease in the Canadian population since the early 1970s.

Designations

Main designations for the species
DesignationStatusDateSubspecies, population
IUCN (Global)Least concern2018 
Wild Species (Canada)Apparently secure2015 

Population status

Geographic area or populationPopulation change relative to ~1970ReliabilityStatus in relation to goal
CanadaLarge DecreaseMediumBelow Acceptable Level
 

Population estimate

Geographic area or populationPopulation estimate
Canada5,000 - 50,000 adults
 

Distribution maps

 

Migration strategy, occurrence

Short-distance migrant

Responsibility for conservation

Geographic areaResponsibility based on % of global population
CanadaLow

General nesting period in Canada

Nesting period starts between late March and early April and ends in mid-July, depending on the region. Before or after this period, the probability of an active nest is lower.
 

Conservation and management

The cause of the population decline of the Bewick's Wren in British Columbia is unknown (Campbell et al. 1997). Drastic declines throughout eastern North America have been attributed to several causes, but linked primarily with competition from House Wrens (Kennedy and White 2013).

 

Bird conservation region strategies

Environment and Climate Change Canada and partners have developed Bird Conservation Region Strategies in each of Canada’s Bird Conservation Regions (BCRs). In these strategies, selected species are identified as priorities for one or more of the following reasons:

  • conservation concerns (i.e., species vulnerable due to population size, distribution, population trend, abundance, or threats)
  • stewardship responsibilities (i.e., species that typify the regional avifauna or have a large proportion of their range or population in the sub-region)
  • management concerns (i.e., species that require ongoing management because of their socio-economic importance as game species, or because of their impacts on other species or habitats)
  • other concerns (i.e., species deemed a priority by regional experts for other reasons than those listed above or because they are listed as species at risk or concern at the provincial level)

Select any of the sub-regions below to view the BCR strategy for additional details.

BCRs, marine biogeographic units, and sub-regions in which the species is listed as a priority
RegionSub-region and priority type
NoneNone
 

References