American Herring Gull
Scientific Name: Larus smithsonianus
Thresholds:
- Wildwood Gull Roost (ON045)82,000 (max.)
- Niagara River Corridor (ON002)50,000 (max.)
- Southern Bight, Minas Basin (NS020)30,610 (max.)
- Pittock Reservoir (ON027)18,000 (max.)
- Barrage de Beauharnois (QC131)15,000 (max.)
- Quoddy Region (NB037)14,531 (max.)
- Corossol Island (QC081)14,508 (max.)
- Witless Bay Islands (NF002)13,990 (max.)
- Île Nue de Mingan (QC078)13,800 (max.)
- La Grosse Boule Island (QC080)10,482 (max.)
- Corbin Island (NF030)10,000 (max.)
- Grand Manan Archipelago (NB011)10,000 (max.)
- Île aux Pommes (QC047)10,000 (max.)
- Île Bonaventure / Bonaventure Island (QC001)10,000 (max.)
- Quidi Vidi Lake (NF022)10,000 (max.)
- Tadoussac (QC085)10,000 (max.)
- Point Pelee (ON006)9,900 (max.)
- Baie des Escoumins et Grandes-Bergeronnes (QC084)8,000 (max.)
- Lac Deschênes-Ottawa River (ON112)8,000 (max.)
- Long Point Peninsula and Marshes (ON001)8,000 (max.)
- Pelee Island Archipelago (ON014)7,644 (max.)
- Shigawake-Newport (QC031)7,186 (max.)
- Napanee Limestone Plain (ON152)6,733 (max.)
- Saint-Augustin Migratory Bird Sanctuary (QC064)6,214 (max.)
- Banc de Carleton (QC030)6,000 (max.)
- Nottawasaga Island (ON153)5,900 (max.)
- South Shore (Barrington Bay Sector) (NS018)5,079 (max.)
- Little Qualicum Estuary to Nanoose Bay (BC056)5,076 (max.)
- Barachois de Malbaie (QC036)5,000 (max.)
- Eastern Lake St. Clair (ON012)5,000 (max.)
- Île aux Basques et Les Razades (QC046)5,000 (max.)
- Île aux Hérons Migratory Bird Sanctuary (QC128)5,000 (max.)
- Île aux Fraises (QC052)4,400 (max.)
- Dundas Valley and Dundas Marsh (ON005)4,268 (max.)
- Bon Portage Island (NS015)4,000 (max.)
- Presqu'ile Provincial Park (ON004)4,000 (max.)
- Réservoir Beaudet (QC110)4,000 (max.)
- Sable Island, Nova Scotia (NS025)4,000 (max.)
- Cape North and Money Point (NS030)3,500 (max.)
- Île Rouge (QC090)3,500 (max.)
- Îles aux Perroquets (QC066)3,500 (max.)
- Îles Sainte-Marie (QC065)3,500 (max.)
- Montmagny (QC104)3,200 (max.)
- Île Bicquette (QC045)3,100 (max.)
- Brier Island and Offshore Waters (NS021)3,000 (max.)
- Cap Tourmente (QC002)3,000 (max.)
- Îles Les Boules (QC040)3,000 (max.)
- Kamouraska (QC055)3,000 (max.)
- Marais de Saint-Fulgence (QC087)3,000 (max.)
- Sept-Îles (QC162)3,000 (max.)
- South Shore (Roseway to Baccaro) (NS017)3,000 (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.
| Wildwood Gull Roost (ON045) | ||
|---|---|---|
| Number | Year | Season |
| 4,000 | 2002 | Winter |
| 38,000 | 1998 | Fall |
| 3,000 | 1998 | Winter |
| 9,000 | 1997 | Summer |
| 3,000 | 1997 | Spring |
| 12,000 | 1996 | Winter |
| 5,000 | 1996 | Fall |
| 5,000 | 1995 | Winter |
| 8,000 - 8,500 | 1994 | Spring |
| 4,319 | 1993 | Winter |
| 20,000 | 1992 | Fall |
| 7,000 - 8,000 | 1990 | Winter |
| 82,000 | 1988 | Winter |
| Niagara River Corridor (ON002) | ||
|---|---|---|
| Number | Year | Season |
| 3,500 | 2021 | Spring |
| 3,000 - 6,765 | 2020 | Winter |
| 3,000 | 2020 | Fall |
| 2,850 - 3,000 | 2019 | Winter |
| 3,490 | 2019 | Fall |
| 4,000 - 5,954 | 2018 | Winter |
| 13,104 | 2018 | Fall |
| 3,000 - 6,763 | 2017 | Winter |
| 5,000 | 2017 | Fall |
| 2,800 - 9,700 | 2016 | Winter |
| 4,000 - 8,288 | 2015 | Winter |
| 3,000 - 3,500 | 2015 | Fall |
| 3,077 - 5,500 | 2014 | Winter |
| 5,000 - 5,210 | 2014 | Fall |
| 5,000 - 10,000 | 2013 | Winter |
| 3,000 | 2013 | Fall |
| 6,607 - 12,000 | 2012 | Winter |
| 5,000 | 2012 | Fall |
| 3,000 - 6,776 | 2011 | Winter |
| 3,000 - 5,745 | 2010 | Winter |
| 3,000 - 40,000 | 2010 | Fall |
| 3,419 - 35,000 | 2009 | Winter |
| 4,000 - 5,000 | 2009 | Fall |
| 9,077 | 2008 | Winter |
| 3,000 - 5,715 | 2007 | Winter |
| 3,149 | 2006 | Winter |
| 4,500 | 2006 | Fall |
| 3,469 | 2005 | Winter |
| 6,743 | 2004 | Winter |
| 4,958 - 5,000 | 2003 | Winter |
| 6,294 | 2002 | Winter |
| 5,000 - 10,000 | 2002 | Fall |
| 5,000 - 11,279 | 2001 | Winter |
| 3,716 - 10,000 | 2000 | Winter |
| 3,500 | 2000 | Fall |
| 19,240 | 1999 | Winter |
| 5,000 | 1999 | Fall |
| 5,000 - 14,322 | 1998 | Winter |
| 8,000 - 11,307 | 1997 | Winter |
| 16,727 | 1996 | Winter |
| 12,531 - 20,000 | 1995 | Winter |
| 15,428 | 1994 | Winter |
| 7,500 - 50,000 | 1993 | Winter |
| 5,500 - 14,157 | 1992 | Winter |
| 5,000 | 1992 | Fall |
| 18,458 | 1991 | Winter |
| 27,464 | 1990 | Winter |
| 50,000 | 1979 | Winter |
| Southern Bight, Minas Basin (NS020) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2021 | Winter |
| 3,500 | 2020 | Winter |
| 3,000 | 2020 | Fall |
| 3,000 | 2019 | Fall |
| 3,000 | 2017 | Winter |
| 5,000 | 2017 | Fall |
| 3,464 | 2016 | Winter |
| 3,000 - 6,543 | 2015 | Winter |
| 4,361 | 2011 | Winter |
| 11,543 | 2010 | Winter |
| 5,217 | 2006 | Winter |
| 3,217 | 2004 | Winter |
| 5,045 | 2003 | Winter |
| 8,062 | 2002 | Winter |
| 13,730 | 2001 | Winter |
| 7,031 | 2000 | Winter |
| 4,981 | 1999 | Winter |
| 30,610 | 1998 | Winter |
| 12,613 | 1997 | Winter |
| 12,688 | 1996 | Winter |
| 18,194 | 1995 | Winter |
| 20,932 | 1994 | Winter |
| 19,634 | 1993 | Winter |
| 27,771 | 1992 | Winter |
| 6,267 | 1991 | Winter |
| 10,163 | 1990 | Winter |
| Pittock Reservoir (ON027) | ||
|---|---|---|
| Number | Year | Season |
| 18,000 | 1988 | Fall |
| Barrage de Beauharnois (QC131) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 1997 | Fall |
| 3,000 - 5,000 | 1994 | Fall |
| 3,000 | 1993 | Fall |
| 5,000 | 1990 | Winter |
| 4,000 | 1986 | Fall |
| 3,000 - 7,500 | 1984 | Winter |
| 2,500 - 5,000 | 1984 | Fall |
| 8,000 - 10,000 | 1983 | Winter |
| 3,000 - 10,000 | 1983 | Fall |
| 3,000 | 1981 | Fall |
| 5,000 | 1980 | Fall |
| 15,000 | 1980 | Winter |
| 5,000 | 1978 | Winter |
| 3,000 | 1976 | Winter |
| 2,500 | 1976 | Fall |
| 3,000 | 1975 | Fall |
| 6,000 | 1974 | Fall |
| 2,500 - 3,500 | 1972 | Fall |
| Quoddy Region (NB037) | ||
|---|---|---|
| Number | Year | Season |
| 3,875 | 2020 | Winter |
| 3,000 | 2015 | Fall |
| 3,000 | 2011 | Fall |
| 5,000 | 2009 | Fall |
| 3,579 | 1999 | Winter |
| 2,044 | 1998 | Winter |
| 4,083 | 1997 | Winter |
| 14,531 | 1996 | Winter |
| 1,638 | 1995 | Winter |
| 3,056 | 1994 | Winter |
| 11,115 | 1993 | Winter |
| Corossol Island (QC081) | ||
|---|---|---|
| Number | Year | Season |
| 1,862 | 1998 | Summer |
| 1,224 - 3,000 | 1993 | Summer |
| 11,296 | 1988 | Summer |
| 14,508 | 1985 | Summer |
| 9,000 | 1982 | Summer |
| Witless Bay Islands (NF002) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2013 | Fall |
| 10,000 | 2011 | Fall |
| 13,990 | 1994 | Summer |
| Île Nue de Mingan (QC078) | ||
|---|---|---|
| Number | Year | Season |
| 2,900 | 2009 | Summer |
| 6,000 | 2006 | Summer |
| 8,974 - 13,800 | 1996 | Summer |
| 10,230 | 1990 | Summer |
| 7,104 | 1983 | Summer |
| 3,506 | 1978 | Summer |
| La Grosse Boule Island (QC080) | ||
|---|---|---|
| Number | Year | Season |
| 10,482 | 1985 | Summer |
| Corbin Island (NF030) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 1974 | Summer |
| Grand Manan Archipelago (NB011) | ||
|---|---|---|
| Number | Year | Season |
| 5,700 | 2021 | Fall |
| 3,000 | 2021 | Spring |
| 3,000 - 5,000 | 2019 | Summer |
| 2,800 | 2019 | Winter |
| 4,000 | 2018 | Fall |
| 3,600 - 4,000 | 2018 | Summer |
| 3,000 | 2018 | Spring |
| 3,000 | 2013 | Summer |
| 1,880 - 3,820 | 1998 | Summer |
| 5,500 | 1998 | Winter |
| 3,775 | 1997 | Winter |
| 5,850 | 1996 | Winter |
| 2,882 | 1984 | Summer |
| 10,000 | 1980 | Summer |
| Île aux Pommes (QC047) | ||
|---|---|---|
| Number | Year | Season |
| 3,498 | 1990 | Spring |
| 3,500 | 1990 | Summer |
| 7,128 | 1977 | Summer |
| 10,000 | 1968 | Summer |
| 4,000 | 1963 | Spring |
| Île Bonaventure / Bonaventure Island (QC001) | ||
|---|---|---|
| Number | Year | Season |
| 336 | 2008 | Summer |
| 10,000 | 1978 | Fall |
| 5,000 | 1976 | Summer |
| ? | ? | Other |
| Quidi Vidi Lake (NF022) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2021 | Winter |
| 3,000 | 2020 | Spring |
| 3,000 | 2020 | Winter |
| 3,000 | 2019 | Spring |
| 3,000 - 7,000 | 2019 | Winter |
| 3,000 - 10,000 | 2018 | Fall |
| 3,000 | 2018 | Spring |
| 8,000 | 2018 | Winter |
| 3,000 - 6,000 | 2017 | Winter |
| 5,000 | 2017 | Spring |
| 3,000 - 5,000 | 2015 | Winter |
| 5,000 - 8,000 | 2014 | Fall |
| 3,500 | 2014 | Winter |
| 3,000 - 4,000 | 2013 | Winter |
| 3,000 - 8,000 | 2013 | Fall |
| 3,500 - 3,750 | 2011 | Winter |
| 3,500 | 2010 | Winter |
| 5,998 | 1996 | Winter |
| 4,693 - 10,000 | 1995 | Winter |
| 5,408 | 1993 | Winter |
| 3,075 | 1992 | Winter |
| Tadoussac (QC085) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 - 3,167 | 2004 | Fall |
| 3,000 - 5,000 | 2003 | Fall |
| 3,000 | 1999 | Fall |
| 3,100 | 1997 | Fall |
| 2,850 - 8,100 | 1996 | Fall |
| 2,500 | 1993 | Fall |
| 10,000 | 1981 | Fall |
| Point Pelee (ON006) | ||
|---|---|---|
| Number | Year | Season |
| 6,000 | 2006 | Fall |
| 7,000 | 2005 | Winter |
| 3,200 | 2005 | Fall |
| 8,500 | 1994 | Spring |
| 4,000 - 9,900 | 1992 | Fall |
| 5,000 | 1990 | Winter |
| Baie des Escoumins et Grandes-Bergeronnes (QC084) | ||
|---|---|---|
| Number | Year | Season |
| 1,646 | 1995 | Spring |
| 2,500 | 1991 | Summer |
| 2,500 | 1990 | Summer |
| 2,500 - 3,000 | 1990 | Spring |
| 2,500 | 1989 | Fall |
| 2,500 | 1989 | Spring |
| 2,800 | 1988 | Fall |
| 2,500 - 3,000 | 1987 | Fall |
| 3,000 | 1986 | Spring |
| 4,000 - 6,000 | 1986 | Winter |
| 2,500 | 1981 | Spring |
| 3,250 - 8,000 | 1980 | Winter |
| Lac Deschênes-Ottawa River (ON112) | ||
|---|---|---|
| Number | Year | Season |
| 8,000 | 2009 | Fall |
| 6,000 - 6,215 | 2008 | Winter |
| 5,000 | 2003 | Fall |
| 6,000 | 1998 | Winter |
| 3,810 | 1997 | Winter |
| 6,685 | 1996 | Winter |
| 3,000 | 1990 | Fall |
| Long Point Peninsula and Marshes (ON001) | ||
|---|---|---|
| Number | Year | Season |
| 4,000 | 1992 | Fall |
| 4,000 - 8,000 | 1992 | Spring |
| 3,500 - 4,000 | 1991 | Fall |
| Pelee Island Archipelago (ON014) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 1997 | Summer |
| 7,644 | 1990 | Summer |
| 1,984 | 1981 | Summer |
| 876 | 1977 | Summer |
| 876 | 1976 | Summer |
| Shigawake-Newport (QC031) | ||
|---|---|---|
| Number | Year | Season |
| 2,862 | 1989 | Summer |
| 3,000 | 1981 | Fall |
| 7,186 | 1979 | Summer |
| 1,296 | 1976 | Summer |
| Napanee Limestone Plain (ON152) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 1998 | Winter |
| 3,067 | 1996 | Winter |
| 6,733 | 1994 | Winter |
| 4,787 | 1990 | Winter |
| Saint-Augustin Migratory Bird Sanctuary (QC064) | ||
|---|---|---|
| Number | Year | Season |
| 6,214 | 1988 | Summer |
| Banc de Carleton (QC030) | ||
|---|---|---|
| Number | Year | Season |
| 272 | 1989 | Summer |
| 3,000 | 1988 | Fall |
| 80 | 1979 | Summer |
| 6,000 | 1976 | Spring |
| Nottawasaga Island (ON153) | ||
|---|---|---|
| Number | Year | Season |
| 4,500 | 2018 | Summer |
| 5,900 | 2017 | Summer |
| 4,000 - 4,500 | 2014 | Summer |
| 5,650 | 2011 | Spring |
| 4,760 | 1999 | Summer |
| South Shore (Barrington Bay Sector) (NS018) | ||
|---|---|---|
| Number | Year | Season |
| 5,079 | 2014 | Winter |
| Little Qualicum Estuary to Nanoose Bay (BC056) | ||
|---|---|---|
| Number | Year | Season |
| 5,076 | 2013 | Spring |
| Barachois de Malbaie (QC036) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2018 | Summer |
| 2,500 | 1988 | Fall |
| 2,500 - 3,000 | 1982 | Fall |
| 3,000 | 1979 | Fall |
| 3,000 - 5,000 | 1976 | Fall |
| 3,000 | 1976 | Summer |
| 3,000 | 1973 | Summer |
| Eastern Lake St. Clair (ON012) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2020 | Winter |
| 3,500 - 4,020 | 2017 | Winter |
| 3,000 | 2016 | Winter |
| 4,826 | 2008 | Winter |
| 2,867 | 1996 | Winter |
| 2,870 | 1993 | Winter |
| 2,928 | 1990 | Winter |
| Île aux Basques et Les Razades (QC046) | ||
|---|---|---|
| Number | Year | Season |
| 1,200 | 1995 | Other |
| 3,000 | 1980 | Winter |
| 3,500 | 1980 | Fall |
| 2,500 - 3,000 | 1970 | Summer |
| 3,000 - 5,000 | 1969 | Fall |
| 2,500 | 1969 | Summer |
| Île aux Hérons Migratory Bird Sanctuary (QC128) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 1991 | Winter |
| 7,502 | 1990 | Winter |
| 3,000 | 1984 | Fall |
| 3,000 | 1982 | Winter |
| 5,000 | 1978 | Fall |
| Île aux Fraises (QC052) | ||
|---|---|---|
| Number | Year | Season |
| 134 | 1999 | Summer |
| 370 | 1990 | Summer |
| 4,400 | 1967 | Summer |
| Dundas Valley and Dundas Marsh (ON005) | ||
|---|---|---|
| Number | Year | Season |
| 3,665 | 2008 | Winter |
| 4,268 | 1990 | Winter |
| Bon Portage Island (NS015) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2016 | Fall |
| 4,000 | 2014 | Fall |
| Presqu'ile Provincial Park (ON004) | ||
|---|---|---|
| Number | Year | Season |
| 4,000 | 2000 | Winter |
| 3,000 | 1996 | Winter |
| Réservoir Beaudet (QC110) | ||
|---|---|---|
| Number | Year | Season |
| 4,000 | 1994 | Fall |
| Sable Island, Nova Scotia (NS025) | ||
|---|---|---|
| Number | Year | Season |
| 4,000 | 1970 | Summer |
| Cape North and Money Point (NS030) | ||
|---|---|---|
| Number | Year | Season |
| 3,500 | 1999 | Summer |
| Île Rouge (QC090) | ||
|---|---|---|
| Number | Year | Season |
| 3,500 | 2003 | Summer |
| 1,100 | 1995 | Summer |
| Îles aux Perroquets (QC066) | ||
|---|---|---|
| Number | Year | Season |
| 3,500 | 2006 | Summer |
| Îles Sainte-Marie (QC065) | ||
|---|---|---|
| Number | Year | Season |
| 860 | 1993 | Summer |
| 1,520 | 1988 | Summer |
| 2,434 | 1982 | Summer |
| 3,500 | 1978 | Summer |
| 540 | 1977 | Summer |
| Montmagny (QC104) | ||
|---|---|---|
| Number | Year | Season |
| 3,200 | 1979 | Winter |
| Île Bicquette (QC045) | ||
|---|---|---|
| Number | Year | Season |
| 3,100 | 1972 | Summer |
| Brier Island and Offshore Waters (NS021) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2021 | Summer |
| 3,000 | 2002 | Spring |
| Cap Tourmente (QC002) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 1971 | Fall |
| Îles Les Boules (QC040) | ||
|---|---|---|
| Number | Year | Season |
| 2,500 - 3,000 | 1993 | Spring |
| 182 | 1990 | Summer |
| Kamouraska (QC055) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2016 | Fall |
| Marais de Saint-Fulgence (QC087) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 1995 | Spring |
| Sept-Îles (QC162) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 1993 | Spring |
| South Shore (Roseway to Baccaro) (NS017) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2006 | Spring |