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Connecticut Warbler, Ryan St. Louis
Photo © Ryan St. Louis

Photo: Ryan St. Louis
Breeding evidence - Connecticut Warbler
Breeding evidence
Relative abundance - Connecticut Warbler
Relative abundance
Probability of observation - Connecticut Warbler
Probability of observation

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Connecticut Warbler
Oporornis agilis

Click on plot to view table of mean abundance
Conserv. status:
SRank S4B
Number of squares
ConfirmedProbablePossiblePoint counts
0 9 125 431
Long-term BBS trends
RegionYearsTrend (conf. interv.) Reliab.
Saskatchewan1970 - 2022 -1.94 (-3.94 - 0.239)Medium
Canada1970 - 2022 -1.6 (-2.86 - -0.423)Medium

Mean abundance (number of birds detected per 5 min. point count) and percentage of squares occupied by region

Bird Conservation Regions [abund. plot] [%squares plot]
Arctic Plains and MountainsBoreal Hardwood TransitionBoreal Softwood Shield
Abund.%SquaresAbund.%SquaresAbund.%Squares
      0.02%
Boreal Taiga PlainsPrairie PotholesTaiga Shield and Hudson Plains
Abund.%SquaresAbund.%SquaresAbund.%Squares
0.017% 0.00% 0.00%

Atlas Results

Atlas results coming soon

Excerpts Adapted from the Birds of Saskatchewan:

Almost never seen out in the open, but obvious due to its loud song, the Connecticut Warbler is a master of stealth as it skulks in heavy undergrowth. The Connecticut breeds in a narrow band from east-central British Columbia to west-central Quebec, south to northern Minnesota, Wisconsin, and Michigan. It winters from northern Venezuela to Central Brazil (Godfrey 1986).

In Saskatchewan breeding habitat is extremely variable, primarily choosing the more open and mature aspen stands (Smith 1996). Tamarack-black spruce bogs, a markedly different habitat, are also used (Houston and Anaka 2003).

The Connecticut Warbler is uncommon in the southern portion of the southern boreal region, and uncommon and local in the parkland region (Eagle and Touchwood Hills and eastern Qu'Appelle Valley) (Smith 1996). As a migrant it occurs rarely as far west as Kindersley and as far south as Estevan, "suggesting that it is yet another [warbler] that migrates mainly via Manitoba? (Smith 1996).

Original text by Muriel Carlson. Text adapted by Daniel J. Sawatzky

Read more about the Connecticut Warbler in the Birds of Saskatchewan here.

LeeAnn M. Latremouille

Recommended citation: Latremouille, L. M. 2025. Connecticut Warbler in Latremouille, L. M., S. L. Van Wilgenburg, C. B. Jardine, D. Lepage, A. R. Couturier, D. Evans, D. Iles, and K. L. Drake (eds.). 2025. The Atlas of the Breeding Birds of Saskatchewan, 2017-2021. Birds Canada. Saskatoon, Saskatchewan https://sk.birdatlas.ca/accounts/speciesaccount.jsp?sp=CONW&lang=en [09 Nov 2025]

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