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Black Tern, Hamilton Greenwood
Photo © Hamilton Greenwood

Photo: Hamilton Greenwood
Breeding evidence - Black Tern
Breeding evidence
Relative abundance - Black Tern
Relative abundance
Probability of observation - Black Tern
Probability of observation

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Black Tern
Chlidonias niger

Click on plot to view table of mean abundance
Conserv. status:
SRank S5B
Number of squares
ConfirmedProbablePossiblePoint counts
99 62 666 493
Long-term BBS trends
RegionYearsTrend (conf. interv.) Reliab.
Saskatchewan1970 - 2022 -2.77 (-4.32 - -1.1)High
Canada1970 - 2022 -3.23 (-4.36 - -2.06)High

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
      0.00%
Boreal Taiga PlainsPrairie PotholesTaiga Shield and Hudson Plains
Abund.%SquaresAbund.%SquaresAbund.%Squares
0.024% 0.031% 0.01%

Atlas Results

Atlas results coming soon

Note: During all years of the Saskatchewan Breeding Bird Atlas drought conditions persisted and the Atlas range maps for all waterfowl, waterbirds, and wetland-associated species should be viewed as characteristic of distribution and abundance during dry conditions. Read the full drought statement here.

Excerpts Adapted from the Birds of Saskatchewan:

Described as a "restless waif of the air, flitting about hither and thither ... buoyant as a butterfly? (Bent 1921) or "dark fairies that float like feathers in the wind? (Wapple and Renaud 2008), the Black Tern resonates with and excites most people who observe this elegant wetland species. The Black Tern has a wide breeding range across the middle latitudes of North America and western Eurasia; our birds winter along the coasts of western Central America and northern South America.

Typical habitats include marshes and other water bodies with a good cover of emergent vegetation including cattails, bulrush, and sedges. Most colonies are in large marshes, but 2 occupied marshes near Edenwold are only 1 ha in size. During migration it occurs in all types of water bodies, including those lacking in emergent vegetation.

The Black Tern is a common summer resident of the marshes of southeastern and central Saskatchewan, but uncommon in the southwest and in the northern boreal region (Smith 1996). It is a straggler to the subarctic region (e.g., 11 Jul 1964 Milton Lake). Numbers have declined in many areas of southern Saskatchewan.

Original text by Jared B. Clarke and Kristen Martin. Text adapted by Daniel J. Sawatzky

Read more about the Black Tern in the Birds of Saskatchewan here.

LeeAnn M. Latremouille

Recommended citation: Latremouille, L. M. 2025. Black Tern 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=BLTE&lang=en [09 Nov 2025]

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