White-winged Scoter
Scientific Name: Melanitta deglandi
Thresholds:
- West End of Lake Ontario (ON022)18,235 (max.)
- Prince Edward County South Shore (ON003)15,000 (max.)
- Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)12,111 (max.)
- Cumshewa Inlet north to Sheldens Bay (BC144)10,000 (max.)
- K'ómoks (BC272)10,000 (max.)
- Little Qualicum Estuary to Nanoose Bay (BC056)10,000 (max.)
- Old Crow Flats (YK001)10,000 (max.)
- Presqu'ile Provincial Park (ON004)8,000 (max.)
- Waters of Île Patte de Lièvre (QC151)6,500 (max.)
- Barre de Portneuf (QC083)5,000 (max.)
- English Bay, Burrard Inlet & Howe Sound (BC020)5,000 (max.)
- Xaana Kaahlii GawGaay Skidegate Inlet (BC145)4,292 (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.
| West End of Lake Ontario (ON022) | ||
|---|---|---|
| Number | Year | Season |
| 4,333 | 2021 | Winter |
| 7,500 | 2014 | Fall |
| 18,235 | 2014 | Winter |
| 5,500 | 2013 | Fall |
| 5,212 | 2013 | Winter |
| 8,000 | 2012 | Fall |
| 2,543 | 2012 | Winter |
| 4,364 | 2011 | Winter |
| 9,500 | 2010 | Spring |
| 1,349 | 2010 | Winter |
| 5,000 | 2009 | Fall |
| 5,410 | 2008 | Winter |
| 15,000 | 2005 | Winter |
| 10,000 | 2003 | Winter |
| 4,284 | 2000 | Winter |
| 5,000 - 10,000 | 1998 | Winter |
| 5,000 | 1997 | Spring |
| 10,000 | 1996 | Spring |
| 5,000 | 1996 | Winter |
| 11,100 | 1995 | Fall |
| 6,000 - 11,100 | 1995 | Spring |
| 7,000 | 1995 | Winter |
| 10,000 | 1994 | Spring |
| 5,000 - 15,000 | 1994 | Winter |
| 5,000 - 15,000 | 1993 | Spring |
| 10,000 | 1993 | Winter |
| 5,000 - 15,000 | 1992 | Spring |
| Prince Edward County South Shore (ON003) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2017 | Spring |
| 4,000 - 5,000 | 2014 | Spring |
| 4,000 | 2011 | Spring |
| 14,500 - 15,000 | 1996 | Winter |
| 12,500 | 1995 | Winter |
| Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017) | ||
|---|---|---|
| Number | Year | Season |
| 12,111 | 2001 | Spring |
| 6,300 - 10,010 | 2000 | Spring |
| Cumshewa Inlet north to Sheldens Bay (BC144) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 1985 | Fall |
| K'ómoks (BC272) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 - 10,000 | 2018 | Spring |
| 5,994 | 2004 | Winter |
| 5,167 | 2004 | Fall |
| 5,085 | 2003 | Spring |
| 5,033 | 2003 | Winter |
| Little Qualicum Estuary to Nanoose Bay (BC056) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2018 | Spring |
| 10,000 | 2014 | Spring |
| 4,300 | 2004 | Spring |
| 6,000 | 1985 | Spring |
| ? | ? | Other |
| Old Crow Flats (YK001) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 1995 | Summer |
| Presqu'ile Provincial Park (ON004) | ||
|---|---|---|
| Number | Year | Season |
| 4,500 | 2002 | Fall |
| 8,000 | 1995 | Winter |
| Waters of Île Patte de Lièvre (QC151) | ||
|---|---|---|
| Number | Year | Season |
| 6,500 | 2012 | Fall |
| 6,000 | 2003 | Summer |
| Barre de Portneuf (QC083) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2016 | Fall |
| English Bay, Burrard Inlet & Howe Sound (BC020) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2008 | Spring |
| Xaana Kaahlii GawGaay Skidegate Inlet (BC145) | ||
|---|---|---|
| Number | Year | Season |
| 283 | 1991 | Spring |
| 4,292 | 1990 | Winter |