Connecticut Warbler
(Oporornis agilis)

Overview

Summary

© 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

Population status

Population estimate

Distribution maps

• BirdLife International / NatureServe
• Breeding Bird Survey (BBS): Relative Abundance and Breeding Distribution (1993-2012)

Migration strategy, occurrence

Responsibility for conservation of world population

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.

References

• Pitocchelli, J., J. Jones, D. Jones and J. Bouchie. 2012. Connecticut Warbler (Oporornis agilis), The Birds of North America Online (A. Poole, Ed.). Cornell Lab of Ornithology, Ithaca, New York. Pitocchelli, J., J. Jones, D. Jones and J. Bouchie. 2012. Connecticut Warbler (Oporornis agilis), The Birds of North America Online (A. Poole, Ed.). Cornell Lab of Ornithology, Ithaca, New York. (Link)