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Harlequin Duck
Scientific Name: Histrionicus histrionicus
Thresholds:
- Lambert Channel/Hornby Island Waters (BC061)5,000 (max.)
- Seven Islands Bay (LB003)327 (max.)
- Shigawake-Newport (QC031)257 (max.)
- Péninsule de Forillon (QC039)210 (max.)
- South Shore (Port Joli sector) (NS004)207 (max.)
- Gannet Islands (LB001)174 (max.)
- Tumbledown Dick Islands and Stag Islands (LB025)162 (max.)
- Cape St. Mary's (NF001)145 (max.)
- Rivière Nastapoka (QC148)142 (max.)
- K'ómoks (BC272)1,587 (max.)
- Île Bonaventure / Bonaventure Island (QC001)118 (max.)
- Rivers of the Lac Guillaume-Delisle Basin (QC147)114 (max.)
Global
1% of the global population estimate. This threshold is used to identify trigger species and IBAs under categories A4i/ii and A4iv.
Regional/Continental
1% of the regional/continental population estimate.
Sub-regional/National SAR
The sub-regional/national SAR threshold = 1% of the COSEWIC population estimate for the region (provinces/territories) in which the species is listed as being at risk. This threshold is used to identify trigger species and IBAs under criterion C1.
| Lambert Channel/Hornby Island Waters (BC061) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 | 2007 | Spring |
| 1,000 | 2005 | Spring |
| 4,277 | 1999 | Other |
| 2,500 | 1998 | Spring |
| 4,000 - 5,000 | 1995 | Spring |
| 1,000 | 1995 | Fall |
| 600 | 1990 | Spring |
| Seven Islands Bay (LB003) | ||
|---|---|---|
| Number | Year | Season |
| 327 | 1994 | Summer |
| Shigawake-Newport (QC031) | ||
|---|---|---|
| Number | Year | Season |
| 100 | 2020 | Fall |
| 200 | 2014 | Winter |
| 101 | 2012 | Winter |
| 100 | 2007 | Fall |
| 96 | 1999 | Spring |
| 19 | 1998 | Summer |
| 257 | 1998 | Spring |
| 46 | 1997 | Fall |
| 28 | 1996 | Summer |
| 60 | 1996 | Fall |
| 10 - 16 | 1993 | Spring |
| 14 | 1990 | Summer |
| 89 | 1989 | Fall |
| 115 | 1989 | Spring |
| 25 | 1969 | Fall |
| Péninsule de Forillon (QC039) | ||
|---|---|---|
| Number | Year | Season |
| 96 | 2021 | Summer |
| 200 | 2020 | Summer |
| 132 | 2020 | Spring |
| 95 - 100 | 2019 | Fall |
| 210 | 2016 | Summer |
| 152 | 2015 | Fall |
| 100 | 1985 | Fall |
| 100 | 1985 | Spring |
| South Shore (Port Joli sector) (NS004) | ||
|---|---|---|
| Number | Year | Season |
| 150 | 2020 | Fall |
| 134 | 2019 | Fall |
| 117 | 2018 | Fall |
| 96 | 2017 | Fall |
| 207 | 2012 | Winter |
| 45 | 1999 | Winter |
| 8 | 1984 | Winter |
| Gannet Islands (LB001) | ||
|---|---|---|
| Number | Year | Season |
| 174 | 2018 | Summer |
| 70 | 1995 | Summer |
| Tumbledown Dick Islands and Stag Islands (LB025) | ||
|---|---|---|
| Number | Year | Season |
| 162 | 1998 | Fall |
| Cape St. Mary's (NF001) | ||
|---|---|---|
| Number | Year | Season |
| 124 | 2020 | Spring |
| 120 | 2018 | Winter |
| 137 | 2015 | Winter |
| 145 | 2014 | Winter |
| 106 | 2014 | Fall |
| 96 | 2014 | Spring |
| 110 | 2005 | Spring |
| 51 | 1998 | Winter |
| 40 | 1997 | Winter |
| 30 | 1988 | Winter |
| Rivière Nastapoka (QC148) | ||
|---|---|---|
| Number | Year | Season |
| 142 | 1992 | Summer |
| 47 | 1991 | Summer |
| K'ómoks (BC272) | ||
|---|---|---|
| Number | Year | Season |
| 1,469 | 2007 | Spring |
| 1,477 | 2006 | Spring |
| 1,099 | 2005 | Spring |
| 1,587 | 2004 | Spring |
| 1,094 | 2003 | Spring |
| 1,221 | 2002 | Spring |
| Île Bonaventure / Bonaventure Island (QC001) | ||
|---|---|---|
| Number | Year | Season |
| 94 | 1999 | Spring |
| 75 | 1995 | Summer |
| 15 - 35 | 1993 | Summer |
| 90 | 1992 | Fall |
| 15 | 1992 | Summer |
| 19 | 1990 | Fall |
| 30 | 1990 | Summer |
| 33 | 1990 | Spring |
| 25 - 118 | 1989 | Fall |
| 13 - 50 | 1988 | Fall |
| 24 - 26 | 1988 | Summer |
| 23 | 1987 | Fall |
| 26 | 1985 | Winter |
| 12 | 1984 | Fall |
| 40 | 1984 | Summer |
| 11 | 1983 | Fall |
| 17 - 34 | 1982 | Fall |
| 13 - 16 | 1982 | Summer |
| 31 | 1981 | Spring |
| 10 - 12 | 1980 | Fall |
| 10 - 35 | 1979 | Fall |
| 20 | 1976 | Summer |
| 10 | 1976 | Spring |
| 18 | 1974 | Spring |
| 10 | 1969 | Summer |
| Rivers of the Lac Guillaume-Delisle Basin (QC147) | ||
|---|---|---|
| Number | Year | Season |
| 114 | 1992 | Summer |
| 13 | 1991 | Summer |