Connecticut Warbler
(Oporornis agilis)

Summary

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

The Connecticut Warbler breeds in open boreal forests across central Canada. The Breeding Bird Survey suggests a moderate decrease in numbers since about 1970, although there is some uncertainty in the trend. With 95% of the global breeding population, Canada's responsibility for this species is very high. The Connecticut Warbler is a candidate wildlife species for assessment by the Committee on the Status of Endangered Wildlife in Canada. This species has been identified as a priority for conservation and/or stewardship in one or more Bird Conservation Region Strategies in Canada.

Designations

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 
Bird Conservation Region StrategyPriority Species2013 

Population status

Geographic areaStatusReliability
CanadaModerate DecreaseMedium
 

Population estimate

Canada500,000 to 5,000,000 adults
 

Distribution maps

 

Migration strategy, occurrence

Long-distance migrant

Responsibility for conservation of world population

CanadaVery High

Conservation and management

The Connecticut Warbler is still relatively unknown, both in terms of its general biology and its migratory behaviour, due to low densities on the breeding grounds and secretive behaviour during migration (Pitocchelli et al. 2012) making population assessment and decisions for conservation and management difficult. Habitat degradation and loss may be occurring on its South American wintering grounds (Pitocchelli et al. 2012).

 

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
Boreal Hardwood TransitionBoreal Hardwood Transition, sub-region and priority type: Ontario Region
Boreal Hardwood TransitionBoreal Hardwood Transition, sub-region and priority type: Quebec Region
Boreal Softwood ShieldBoreal Softwood Shield, sub-region and priority type: Ontario Region
Boreal Softwood ShieldBoreal Softwood Shield, sub-region and priority type: Prairie and Northern Region
Boreal Softwood ShieldBoreal Softwood Shield, sub-region and priority type: Quebec Region
Boreal Taiga PlainsBoreal Taiga Plains, sub-region and priority type: Prairie and Northern Region
 

References