Razorbill
Scientific Name: Alca torda
Thresholds:
- Witless Bay Islands (NF002)500,000 (max.)
- Grand Manan Archipelago (NB011)52,000 (max.)
- Les rochers aux Oiseaux (QC006)20,000 (max.)
- Îles Sainte-Marie (QC065)16,547 (max.)
- Gannet Islands (LB001)12,840 (max.)
- Baie des Loups (QC069)11,000 (max.)
- Brier Island and Offshore Waters (NS021)8,600 (max.)
- Île Bonaventure / Bonaventure Island (QC001)6,000 (max.)
- Cap d'Espoir (QC035)5,000 (max.)
- Île Brion (QC007)5,000 (max.)
- Pointe Saint-Pierre et île Plate (QC033)5,000 (max.)
- Îles Pèlerins (QC049)3,859 (max.)
- Northeast Groswater Bay (LB012)3,662 (max.)
- Bird Island (LB019)3,060 (max.)
- Baie de Brador (QC063)3,000 (max.)
- Brandypot Islands (QC050)3,000 (max.)
- Machias Seal Island (NB019)3,000 (max.)
- Point Amour, Strait of Belle Isle (LB022)3,000 (max.)
- Tumbledown Dick Islands and Stag Islands (LB025)3,000 (max.)
- Corossol Island (QC081)2,799 (max.)
- Sept-Îles (QC162)2,799 (max.)
- Bird Islands (NS001)1,800 (max.)
- Offshore Islands Southeast of Nain (LB005)1,630 (max.)
- Miscou Island (NB021)1,500 (max.)
- Péninsule de Forillon (QC039)1,500 (max.)
- Quoddy Region (NB037)1,000 (max.)
- Quaker Hat Island (LB009)920 (max.)
- Îles aux Perroquets (QC066)900 (max.)
- Rimouski (QC041)824 (max.)
- Baie des Escoumins et Grandes-Bergeronnes (QC084)800 (max.)
- Betchouane (QC074)800 (max.)
- Eastern Cape Sable Island (NS016)632 (max.)
- Barachois de Malbaie (QC036)600 (max.)
- Cape St. Mary's (NF001)600 (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.
| Witless Bay Islands (NF002) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 | 2019 | Summer |
| 750 - 500,000 | 2014 | Summer |
| 1,000 | 2010 | Summer |
| 200 | 1985 | Other |
| Grand Manan Archipelago (NB011) | ||
|---|---|---|
| Number | Year | Season |
| 3,870 | 2019 | Winter |
| 690 | 2018 | Winter |
| 1,000 | 2017 | Summer |
| 7,500 - 52,000 | 1998 | Winter |
| 25,000 | 1997 | Winter |
| 10,000 | 1995 | Winter |
| 10,000 | 1993 | Winter |
| Les rochers aux Oiseaux (QC006) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 | 2017 | Summer |
| 1,000 | 2016 | Summer |
| 1,814 | 2016 | Spring |
| 1,000 | 2012 | Summer |
| 1,000 - 20,000 | 2011 | Summer |
| 1,900 | 2007 | Summer |
| 1,000 | 2005 | Summer |
| 1,232 - 1,884 | 2000 | Summer |
| 600 | 1993 | Summer |
| 500 | 1987 | Summer |
| 600 | 1966 | Summer |
| Îles Sainte-Marie (QC065) | ||
|---|---|---|
| Number | Year | Season |
| 4,952 - 6,929 | 2015 | Summer |
| 6,864 - 16,547 | 2010 | Summer |
| 3,342 | 1993 | Summer |
| 2,848 | 1988 | Summer |
| 1,216 | 1982 | Summer |
| 3,500 | 1978 | Summer |
| 1,180 | 1977 | Summer |
| Gannet Islands (LB001) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 2018 | Summer |
| 10,800 | 1983 | Summer |
| 12,840 | 1975 | Summer |
| Baie des Loups (QC069) | ||
|---|---|---|
| Number | Year | Season |
| 783 - 1,446 | 2015 | Summer |
| 2,984 | 2010 | Summer |
| 241 | 1993 | Summer |
| 242 | 1988 | Summer |
| 406 | 1982 | Summer |
| 1,190 | 1977 | Summer |
| 1,000 | 1976 | Summer |
| 2,294 | 1972 | Summer |
| 11,000 | 1965 | Summer |
| 9,240 | 1960 | Summer |
| 8,030 | 1955 | Summer |
| Brier Island and Offshore Waters (NS021) | ||
|---|---|---|
| Number | Year | Season |
| 8,215 | 2006 | Winter |
| 640 | 2002 | Winter |
| 8,600 | 2000 | Winter |
| 378 | 1998 | Winter |
| Île Bonaventure / Bonaventure Island (QC001) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 - 1,500 | 2021 | Summer |
| 1,500 | 2019 | Summer |
| 800 - 1,200 | 2018 | Summer |
| 3,000 - 6,000 | 2016 | Summer |
| 2,500 - 3,000 | 2016 | Spring |
| 2,000 | 2015 | Summer |
| 2,000 | 2015 | Spring |
| 1,000 | 2014 | Summer |
| 2,000 | 2013 | Fall |
| 1,000 - 2,500 | 2013 | Summer |
| 2,000 - 2,500 | 2012 | Summer |
| 5,000 | 2010 | Summer |
| 2,104 - 2,646 | 2008 | Summer |
| 600 - 1,000 | 2006 | Summer |
| 1,000 | 2005 | Summer |
| 700 | 2003 | Summer |
| 1,278 | 2002 | Summer |
| 1,100 | 2001 | Summer |
| 1,000 | 2000 | Summer |
| 1,000 | 1995 | Summer |
| 2,000 | 1992 | Spring |
| 3,000 | 1976 | Spring |
| ? | ? | Other |
| Cap d'Espoir (QC035) | ||
|---|---|---|
| Number | Year | Season |
| 700 | 2018 | Summer |
| 960 | 2017 | Winter |
| 600 - 1,110 | 2016 | Fall |
| 1,400 | 2015 | Fall |
| 2 | 1989 | Summer |
| 5,000 | 1981 | Spring |
| 0 | 1979 | Summer |
| 2 | 1978 | Summer |
| Île Brion (QC007) | ||
|---|---|---|
| Number | Year | Season |
| 1,500 | 2016 | Summer |
| 2,588 | 2016 | Spring |
| 5,000 | 2011 | Summer |
| 598 | 2007 | Summer |
| 772 - 1,074 | 2000 | Summer |
| 700 | 1999 | Summer |
| 281 | 1985 | Summer |
| 47 | 1976 | Summer |
| Pointe Saint-Pierre et île Plate (QC033) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 1993 | Spring |
| Îles Pèlerins (QC049) | ||
|---|---|---|
| Number | Year | Season |
| 1,484 | 2016 | Spring |
| 663 - 1,134 | 2011 | Spring |
| 898 | 2006 | Spring |
| 3,859 | 1999 | Summer |
| 767 - 1,888 | 1990 | Summer |
| 843 | 1990 | Spring |
| 1,658 | 1988 | Summer |
| 895 - 1,502 | 1985 | Summer |
| 850 | 1978 | Summer |
| 1,180 | 1974 | Summer |
| 1,200 | 1971 | Summer |
| Northeast Groswater Bay (LB012) | ||
|---|---|---|
| Number | Year | Season |
| 3,662 | 1978 | Summer |
| Bird Island (LB019) | ||
|---|---|---|
| Number | Year | Season |
| 3,060 | 1978 | Summer |
| Baie de Brador (QC063) | ||
|---|---|---|
| Number | Year | Season |
| 2,500 | 2019 | Summer |
| 2,000 - 3,000 | 2018 | Summer |
| 1,000 | 2017 | Summer |
| 954 | 1993 | Summer |
| 800 | 1988 | Summer |
| 374 | 1982 | Summer |
| 452 | 1977 | Summer |
| Brandypot Islands (QC050) | ||
|---|---|---|
| Number | Year | Season |
| 2,500 | 2021 | Summer |
| 4,000 | 2021 | Spring |
| 1,000 | 2020 | Spring |
| 1,500 | 2019 | Summer |
| 1,000 | 2018 | Summer |
| 2,500 - 3,000 | 2018 | Spring |
| 800 | 2017 | Summer |
| 1,720 | 2016 | Spring |
| 1,753 | 2011 | Spring |
| 1,029 | 2006 | Spring |
| 1,108 | 1999 | Summer |
| 90 | 1966 | Summer |
| 400 | 1964 | Summer |
| Machias Seal Island (NB019) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 - 1,200 | 2019 | Summer |
| 750 - 850 | 2018 | Summer |
| 1,000 - 1,200 | 2014 | Summer |
| 3,000 | 2007 | Winter |
| 1,500 - 3,000 | 2007 | Summer |
| 2,500 | 2005 | Summer |
| 1,400 | 1998 | Summer |
| Point Amour, Strait of Belle Isle (LB022) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2016 | Summer |
| ? | 1996 | Spring |
| Tumbledown Dick Islands and Stag Islands (LB025) | ||
|---|---|---|
| Number | Year | Season |
| 3,000 | 2004 | Summer |
| Corossol Island (QC081) | ||
|---|---|---|
| Number | Year | Season |
| 2,799 | 2010 | Spring |
| 1,000 | 2009 | Summer |
| 600 | 2006 | Summer |
| 2,197 | 2005 | Spring |
| 815 | 1998 | Spring |
| 815 | 1998 | Summer |
| 589 | 1993 | Summer |
| Sept-Îles (QC162) | ||
|---|---|---|
| Number | Year | Season |
| 700 - 2,000 | 2021 | Summer |
| 600 - 1,000 | 2019 | Summer |
| 1,000 - 1,200 | 2018 | Summer |
| 2,799 | 2010 | Spring |
| 1,000 | 2009 | Summer |
| 600 | 2006 | Summer |
| 2,197 | 2005 | Spring |
| 815 | 1998 | Spring |
| 589 | 1993 | Summer |
| Bird Islands (NS001) | ||
|---|---|---|
| Number | Year | Season |
| 800 | 2020 | Summer |
| 600 - 1,800 | 2019 | Summer |
| 600 - 800 | 2018 | Summer |
| 1,200 | 2017 | Summer |
| 1,000 | 2016 | Summer |
| 1,800 | 2013 | Summer |
| 700 | 1999 | Summer |
| 430 | 1997 | Summer |
| 278 | 1995 | Summer |
| 372 | 1993 | Summer |
| 164 | 1991 | Summer |
| 262 | 1990 | Summer |
| 166 | 1989 | Summer |
| 176 | 1988 | Summer |
| 122 | 1984 | Summer |
| 110 | 1982 | Summer |
| 202 | 1981 | Summer |
| 138 | 1980 | Summer |
| 138 | 1979 | Summer |
| Offshore Islands Southeast of Nain (LB005) | ||
|---|---|---|
| Number | Year | Season |
| 1,630 | 1978 | Summer |
| Miscou Island (NB021) | ||
|---|---|---|
| Number | Year | Season |
| 1,500 | 2016 | Fall |
| Péninsule de Forillon (QC039) | ||
|---|---|---|
| Number | Year | Season |
| 650 - 2,500 | 2021 | Summer |
| 5,000 | 2021 | Spring |
| 650 - 1,250 | 2019 | Spring |
| 950 - 975 | 2016 | Summer |
| 675 - 1,500 | 2016 | Spring |
| 900 | 2015 | Fall |
| 1,138 | 2013 | Summer |
| 1,200 | 2010 | Summer |
| 167 | 1999 | Summer |
| Quoddy Region (NB037) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 | 2016 | Winter |
| Quaker Hat Island (LB009) | ||
|---|---|---|
| Number | Year | Season |
| 920 | 1978 | Summer |
| Îles aux Perroquets (QC066) | ||
|---|---|---|
| Number | Year | Season |
| 900 | 2019 | Spring |
| 600 | 2010 | Spring |
| Rimouski (QC041) | ||
|---|---|---|
| Number | Year | Season |
| 611 - 824 | 2017 | Fall |
| Baie des Escoumins et Grandes-Bergeronnes (QC084) | ||
|---|---|---|
| Number | Year | Season |
| 600 | 2021 | Fall |
| 636 | 2019 | Spring |
| 800 | 2018 | Fall |
| Betchouane (QC074) | ||
|---|---|---|
| Number | Year | Season |
| 800 | 2015 | Summer |
| 142 | 1993 | Summer |
| 82 | 1988 | Summer |
| Eastern Cape Sable Island (NS016) | ||
|---|---|---|
| Number | Year | Season |
| 632 | 2019 | Fall |
| Barachois de Malbaie (QC036) | ||
|---|---|---|
| Number | Year | Season |
| 600 | 2005 | Summer |
| Cape St. Mary's (NF001) | ||
|---|---|---|
| Number | Year | Season |
| 600 | 2018 | Spring |
| 200 | 1988 | Summer |