Long-tailed Duck
Scientific Name: Clangula hyemalis
Thresholds:
- Prince Edward County South Shore (ON003)225,000 (max.)
- West End of Lake Ontario (ON022)200,000 (max.)
- Cap d'Espoir (QC035)60,000 (max.)
- East Point (ON147)34,000 (max.)
- Netitishi Point (ON137)33,000 (max.)
- Baie de Gaspé (QC037)30,000 (max.)
- Tadoussac (QC085)27,900 (max.)
- Dundas Valley and Dundas Marsh (ON005)24,304 (max.)
- Queen Maud Gulf (NU009)15,017 (max.)
- Batture aux Alouettes and mouth of Saguenay River (QC091)15,000 (max.)
- Péninsule de Forillon (QC039)12,000 (max.)
- Hamilton Harbour Waterbird Colonies (ON020)10,000 (max.)
- Lambert Channel/Hornby Island Waters (BC061)8,500 (max.)
- Pei lay sheesh kow (ON157)8,000 (max.)
- Presqu'ile Provincial Park (ON004)7,743 (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.
| Prince Edward County South Shore (ON003) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 2019 | Spring |
| 8,832 | 2015 | Winter |
| 8,000 | 2013 | Fall |
| 24,800 | 2012 | Winter |
| 8,000 | 2006 | Spring |
| 8,000 - 15,000 | 2004 | Spring |
| 10,000 - 225,000 | 2003 | Spring |
| 15,000 - 30,000 | 2002 | Spring |
| 21,000 - 30,000 | 2001 | Spring |
| 35,000 - 150,000 | 2000 | Spring |
| 10,000 - 40,000 | 1999 | Spring |
| 10,000 | 1998 | Fall |
| 37,785 | 1997 | Winter |
| 8,000 - 15,000 | 1997 | Spring |
| 37,700 | 1996 | Winter |
| 10,000 | 1995 | Fall |
| 22,600 | 1995 | Winter |
| 10,000 | 1994 | Winter |
| 28,000 | 1993 | Winter |
| West End of Lake Ontario (ON022) | ||
|---|---|---|
| Number | Year | Season |
| 19,560 | 2021 | Spring |
| 9,000 - 19,718 | 2021 | Winter |
| 10,000 - 32,872 | 2020 | Fall |
| 9,112 - 12,216 | 2020 | Spring |
| 10,445 | 2020 | Winter |
| 25,387 | 2019 | Winter |
| 9,853 | 2019 | Fall |
| 8,830 - 27,440 | 2018 | Winter |
| 7,546 - 8,112 | 2018 | Spring |
| 8,063 - 17,134 | 2017 | Winter |
| 8,000 - 32,623 | 2017 | Fall |
| 10,981 | 2017 | Spring |
| 10,871 - 20,000 | 2016 | Winter |
| 17,000 - 20,000 | 2016 | Fall |
| 9,300 - 11,971 | 2016 | Spring |
| 16,900 - 56,851 | 2015 | Winter |
| 8,650 - 29,391 | 2015 | Fall |
| 10,350 - 15,000 | 2014 | Fall |
| 33,080 | 2014 | Winter |
| 10,000 - 13,007 | 2013 | Winter |
| 10,000 | 2013 | Fall |
| 10,000 - 15,000 | 2012 | Fall |
| 10,800 | 2012 | Winter |
| 21,000 | 2011 | Winter |
| 10,000 | 2011 | Fall |
| 10,000 - 10,420 | 2010 | Winter |
| 16,000 - 37,600 | 2010 | Fall |
| 8,883 - 10,000 | 2009 | Winter |
| 10,000 - 20,000 | 2009 | Fall |
| 10,000 - 200,000 | 2008 | Fall |
| 8,000 - 68,920 | 2007 | Winter |
| 100,000 - 105,430 | 2007 | Fall |
| 8,000 - 103,000 | 2006 | Fall |
| 15,800 - 24,300 | 2005 | Winter |
| 8,000 - 8,500 | 2004 | Fall |
| 30,000 | 2003 | Fall |
| 8,500 - 40,000 | 2003 | Winter |
| 20,000 | 2002 | Fall |
| 10,000 | 2002 | Spring |
| 10,000 | 2002 | Winter |
| 10,000 - 50,000 | 2001 | Winter |
| 10,000 - 50,000 | 2001 | Fall |
| 15,000 | 2001 | Spring |
| 10,000 - 25,000 | 2000 | Fall |
| 10,000 - 40,000 | 2000 | Spring |
| 52,000 | 2000 | Winter |
| 26,000 - 28,500 | 1999 | Fall |
| 10,000 | 1999 | Winter |
| 20,000 | 1998 | Fall |
| 10,000 - 25,000 | 1998 | Spring |
| 10,000 - 30,000 | 1997 | Spring |
| 25,000 - 30,000 | 1994 | Fall |
| 10,000 | 1993 | Spring |
| Cap d'Espoir (QC035) | ||
|---|---|---|
| Number | Year | Season |
| 8,000 | 1992 | Spring |
| 60,000 | 1992 | Summer |
| 37,000 | 1980 | Winter |
| East Point (ON147) | ||
|---|---|---|
| Number | Year | Season |
| 34,000 | 1985 | Fall |
| Netitishi Point (ON137) | ||
|---|---|---|
| Number | Year | Season |
| 8,000 | 2012 | Fall |
| 14,800 - 33,000 | 1981 | Fall |
| Baie de Gaspé (QC037) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 - 30,000 | 1990 | Winter |
| Tadoussac (QC085) | ||
|---|---|---|
| Number | Year | Season |
| 12,000 - 35,000 | 2021 | Spring |
| 10,900 - 12,400 | 2020 | Fall |
| 7,900 | 2020 | Spring |
| 10,000 - 16,900 | 2019 | Fall |
| 9,400 - 11,200 | 2019 | Spring |
| 15,500 - 24,800 | 2018 | Fall |
| 7,600 - 15,850 | 2016 | Fall |
| 8,350 - 15,850 | 2016 | Winter |
| 12,200 - 12,300 | 2015 | Fall |
| 12,000 - 27,900 | 2011 | Spring |
| 20,472 | 1995 | Winter |
| 24,000 | 1992 | Winter |
| 20,000 | 1987 | Winter |
| Dundas Valley and Dundas Marsh (ON005) | ||
|---|---|---|
| Number | Year | Season |
| 21,954 - 22,000 | 2011 | Winter |
| 9,024 | 2009 | Winter |
| 24,304 | 2005 | Winter |
| 8,812 | 2003 | Winter |
| 17,369 | 2002 | Winter |
| 10,500 - 50,000 | 2001 | Winter |
| 12,855 | 1999 | Winter |
| Queen Maud Gulf (NU009) | ||
|---|---|---|
| Number | Year | Season |
| 15,017 | 1990 | Summer |
| Batture aux Alouettes and mouth of Saguenay River (QC091) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 2011 | Spring |
| 15,000 | 1991 | Winter |
| Péninsule de Forillon (QC039) | ||
|---|---|---|
| Number | Year | Season |
| 12,000 | 1972 | Winter |
| Hamilton Harbour Waterbird Colonies (ON020) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 2009 | Winter |
| Lambert Channel/Hornby Island Waters (BC061) | ||
|---|---|---|
| Number | Year | Season |
| 250 | 2007 | Spring |
| 8,500 | 1990 | Spring |
| Pei lay sheesh kow (ON157) | ||
|---|---|---|
| Number | Year | Season |
| 8,000 | 2012 | Fall |
| 10 | 1990 | Spring |
| 65 | 1976 | Fall |
| Presqu'ile Provincial Park (ON004) | ||
|---|---|---|
| Number | Year | Season |
| 7,743 | 1997 | Winter |