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After decades of conservation leadership, the Important Bird and Biodiversity Areas program and its community of volunteer Caretakers are transitioning
to the Key Biodiversity Areas Program. Birds Canada will no longer be updating this website. Please check www.kbacanada.org
for up to date information.
Redhead
Scientific Name: Aythya americana
Thresholds:
- Long Point Peninsula and Marshes (ON001)76,030 (max.)
- Long Island and Long Island Bay (MB085)60,000 (max.)
- Cumberland Marshes (SK102)36,000 (max.)
- Wolfe Island (ON037)16,000 (max.)
- Eastern Lake St. Clair (ON012)15,200 (max.)
- Norfolk Forest Complex (ON009)14,000 (max.)
- Prince Edward County South Shore (ON003)10,000 (max.)
- Creston Valley (BC179)9,390 (max.)
- Greater Rondeau Area (ON007)9,300 (max.)
- Lower Detroit River (ON047)9,011 (max.)
- Presqu'ile Provincial Park (ON004)8,000 (max.)
- Amherst Island (ON062)7,500 (max.)
- Luck Lake (SK003)5,000 (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.
| Long Point Peninsula and Marshes (ON001) | ||
|---|---|---|
| Number | Year | Season |
| 14,762 - 166,700 | 2021 | Fall |
| 5,000 - 11,000 | 2020 | Winter |
| 11,910 - 20,000 | 2020 | Fall |
| 5,000 - 6,500 | 2020 | Spring |
| 5,000 | 2019 | Winter |
| 8,000 - 13,030 | 2019 | Fall |
| 10,000 | 2019 | Spring |
| 17,840 - 22,000 | 2018 | Fall |
| 5,000 - 10,500 | 2018 | Spring |
| 5,000 | 2018 | Winter |
| 5,000 - 30,800 | 2017 | Fall |
| 7,500 | 2017 | Spring |
| 5,000 - 12,000 | 2017 | Winter |
| 5,000 | 2016 | Winter |
| 7,500 - 76,030 | 2016 | Fall |
| 5,000 - 25,825 | 2015 | Winter |
| 36,700 - 49,000 | 2015 | Fall |
| 5,000 - 26,081 | 2014 | Winter |
| 25,115 - 46,200 | 2014 | Fall |
| 7,000 | 2014 | Spring |
| 33,500 - 35,000 | 2013 | Fall |
| 5,000 - 12,000 | 2013 | Spring |
| 7,547 - 12,000 | 2012 | Winter |
| 10,500 - 44,230 | 2012 | Fall |
| 9,500 | 2012 | Spring |
| 6,004 | 2011 | Winter |
| 20,000 | 2011 | Spring |
| 10,000 - 15,000 | 2009 | Fall |
| 10,400 | 2008 | Spring |
| 5,300 | 2006 | Fall |
| 7,013 | 2001 | Winter |
| 6,414 | 2000 | Winter |
| 16,228 | 1999 | Winter |
| 9,573 - 13,578 | 1998 | Fall |
| 13,464 - 18,931 | 1998 | Spring |
| 21,897 | 1998 | Winter |
| 10,089 | 1992 | Fall |
| Long Island and Long Island Bay (MB085) | ||
|---|---|---|
| Number | Year | Season |
| 60,000 | 1977 | Fall |
| Cumberland Marshes (SK102) | ||
|---|---|---|
| Number | Year | Season |
| 36,000 | 1972 | Summer |
| Wolfe Island (ON037) | ||
|---|---|---|
| Number | Year | Season |
| 7,000 - 7,300 | 2020 | Fall |
| 4,704 | 2019 | Fall |
| 8,100 | 2018 | Fall |
| 5,100 - 15,050 | 2017 | Fall |
| 4,756 | 2017 | Spring |
| 7,000 | 2017 | Winter |
| 4,500 | 2016 | Fall |
| 8,000 - 14,470 | 2015 | Fall |
| 9,000 | 2011 | Fall |
| 5,986 - 7,000 | 2010 | Winter |
| 8,000 | 2010 | Fall |
| 12,000 - 16,000 | 2009 | Fall |
| 5,044 | 2006 | Winter |
| 3,700 | 1993 | Fall |
| Eastern Lake St. Clair (ON012) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2016 | Spring |
| 12,002 | 2016 | Winter |
| 15,200 | 2007 | Winter |
| Norfolk Forest Complex (ON009) | ||
|---|---|---|
| Number | Year | Season |
| 14,000 | 2000 | Fall |
| Prince Edward County South Shore (ON003) | ||
|---|---|---|
| Number | Year | Season |
| 4,500 | 2021 | Winter |
| 10,000 | 2020 | Winter |
| 4,500 - 5,000 | 2017 | Winter |
| 8,000 | 2016 | Winter |
| 5,000 | 2012 | Winter |
| Creston Valley (BC179) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2021 | Spring |
| 5,000 | 2019 | Spring |
| 5,000 | 2017 | Winter |
| 4,501 | 2015 | Spring |
| 5,000 | 2015 | Winter |
| 9,390 | 1990 | Fall |
| 6,314 | 1989 | Fall |
| 6,580 | 1988 | Summer |
| 7,930 | 1986 | Fall |
| 9,200 | 1984 | Fall |
| Greater Rondeau Area (ON007) | ||
|---|---|---|
| Number | Year | Season |
| 7,500 | 2019 | Spring |
| 7,500 - 9,300 | 2001 | Winter |
| Lower Detroit River (ON047) | ||
|---|---|---|
| Number | Year | Season |
| 9,011 | 1997 | Winter |
| 3,012 | 1996 | Winter |
| 1,005 | 1993 | Winter |
| Presqu'ile Provincial Park (ON004) | ||
|---|---|---|
| Number | Year | Season |
| 5,500 - 7,000 | 2021 | Spring |
| 7,200 | 2019 | Fall |
| 5,000 | 2019 | Spring |
| 5,500 | 2017 | Winter |
| 8,000 | 2016 | Spring |
| 5,500 | 1998 | Spring |
| Amherst Island (ON062) | ||
|---|---|---|
| Number | Year | Season |
| 7,500 | 2016 | Winter |
| Luck Lake (SK003) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2016 | Fall |