Carolina Wren
(Thryothorus ludovicianus)


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

The Carolina Wren is a very uncommon species in Canada, with only a peripheral population occurring in southern Ontario and recently Quebec. However, this species is widely distributed and common throughout the eastern Unites States. In Canada, results from the Breeding Bird Survey suggest a significant increase in population since 1970. The Carolina Wren is well adapted to human activities and there are few known threats.


Listing of the main designations for the species
DesignationStatusDateSubspecies, population
IUCN (Global)Least Concern2012 
Partners in Flight (North America)Stewardship List2012 
Wild Species (Canada)Secure2010 

Population status

Geographic areaStatusReliability
CanadaLarge IncreaseHigh

Population estimate

Canada< 5,000 adults

Distribution maps


Migration strategy, occurrence


Responsibility for conservation of world population

CanadaVery Low

Conservation and management

The species is well adapted to human activities. A warming climate appears to be responsible for the northward expansion of its range (Haggerty and Morton 2014). The Carolina Wren benefits from bird feeding activities and from land uses that create dense edge habitat and thickets (e.g. forest fragmentation and logging; Haggerty and Morton 2014). Severe winters can have devastating effects on local populations, but they often recover within a few years (Haggerty and Morton 2014).


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