 Breeding evidence |
 Relative abundance |
 Probability of observation |
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Click on plot to view table of mean abundance
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Number of squares
Long-term BBS trends
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-3.69 (-6.08 - -1.52)|
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]
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Atlas Results
Atlas results coming soon
Excerpts Adapted from the Birds of Saskatchewan:
When sounding its distinctive quick-three-beers call on territory, the Olive-sided Flycatcher can be quite conspicuous. It is a summer resident in the boreal forest across Canada, the western and the northeastern US, and the interior of Alaska. Wintering occurs from southern Mexico to western Bolivia and northern Amazonian Brazil (Altman and Sallabanks 2000).
Although nesting habitat includes many forest types, "mixed age stands with openings and tall snags are much preferred to homogeneous forests? (Smith 1996). Symons (1967) noted a fondness for fire-killed forests, while Hooper (1992) noted a preference for bogs and swamps. As a migrant in southern Saskatchewan it may be seen in open or semi-open country, often on the highest, most exposed perch available.
The Olive-sided Flycatcher was formerly "a fairly common summer resident throughout the Subarctic and Boreal forests of Saskatchewan? extending south to Duck Mountain (Smith 1996). Elsewhere this species is rare except on migration, when birds may be observed singly or in low numbers. Early summer records from the Cypress Hills may indicate a separate breeding population there. This species has declined across its range since 1960; it is currently listed as Threatened by COSEWIC and given legal protection under SARA.
Original text by Ryan Dudragne. Text adapted by Daniel J. Sawatzky
Read more about the Olive-sided Flycatcher in the Birds of Saskatchewan here.
Recommended citation: Latremouille, L. M. 2025. Olive-sided Flycatcher 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=OSFL&lang=en [14 Nov 2025]
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