Glaucous-winged Gull
Scientific Name: Larus glaucescens
Thresholds:
- Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)55,803 (max.)
- K'ómoks (BC272)45,000 (max.)
- Lambert Channel/Hornby Island Waters (BC061)45,000 (max.)
- Comox Valley (BC014)32,000 (max.)
- Baynes Sound (BC057)15,000 (max.)
- Little Qualicum Estuary to Nanoose Bay (BC056)10,000 (max.)
- Xaana Kaahlii GawGaay Skidegate Inlet (BC145)6,342 (max.)
- Squamish River Area (BC023)5,156 (max.)
- Chain Islets & Great Chain Island (BC045)4,864 (max.)
- Mandarte Island (BC046)4,726 (max.)
- Kyuquot Channel Islets (BC088)4,546 (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.
| Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017) | ||
|---|---|---|
| Number | Year | Season |
| 4,500 - 14,000 | 2020 | Winter |
| 7,392 | 2019 | Fall |
| 5,000 - 6,000 | 2019 | Winter |
| 4,500 - 5,000 | 2018 | Fall |
| 5,000 | 2018 | Winter |
| 5,000 - 10,000 | 2017 | Winter |
| 4,500 - 35,135 | 2016 | Winter |
| 4,800 - 6,500 | 2016 | Fall |
| 5,000 | 2015 | Winter |
| 7,000 | 2015 | Fall |
| 17,039 | 2014 | Winter |
| 37,079 | 2013 | Winter |
| 38,537 | 2012 | Winter |
| 4,000 - 40,563 | 2011 | Winter |
| 6,742 - 46,424 | 2010 | Winter |
| 5,350 - 47,929 | 2009 | Winter |
| 47,929 | 2009 | Spring |
| 5,000 | 2008 | Fall |
| 30,049 | 2008 | Winter |
| 6,000 - 53,380 | 2007 | Winter |
| 6,000 - 55,803 | 2006 | Winter |
| 5,000 - 55,803 | 2005 | Winter |
| 4,126 - 6,934 | 2004 | Winter |
| 5,000 - 47,728 | 2003 | Winter |
| 28,472 - 47,728 | 2002 | Winter |
| 5,000 - 32,188 | 2001 | Winter |
| 5,000 | 2001 | Fall |
| 8,366 - 32,188 | 2000 | Winter |
| 5,000 | 1998 | Winter |
| 7,521 | 1997 | Winter |
| 19,000 - 20,531 | 1995 | Winter |
| 4,724 - 42,000 | 1994 | Winter |
| 20,607 | 1993 | Winter |
| 5,000 - 10,800 | 1992 | Winter |
| 6,518 - 22,036 | 1991 | Winter |
| 25,389 | 1990 | Winter |
| 44,832 | 1980 | Winter |
| K'ómoks (BC272) | ||
|---|---|---|
| Number | Year | Season |
| 10,000 | 2021 | Spring |
| 5,000 | 2020 | Spring |
| 5,000 - 9,025 | 2017 | Spring |
| 5,000 | 2016 | Spring |
| 5,000 - 32,000 | 2014 | Spring |
| 5,000 - 8,000 | 2013 | Spring |
| 4,697 | 2012 | Winter |
| 7,548 | 2011 | Spring |
| 4,363 | 2010 | Winter |
| 5,000 - 8,000 | 2010 | Fall |
| 4,300 - 45,000 | 2010 | Spring |
| 5,669 | 2006 | Spring |
| 4,310 | 2005 | Winter |
| 6,914 - 6,925 | 2004 | Winter |
| 7,000 | 2004 | Spring |
| 9,244 | 2003 | Winter |
| 6,866 | 2002 | Winter |
| 8,597 | 2001 | Winter |
| 8,000 | 2001 | Spring |
| 5,685 | 2000 | Winter |
| 6,310 | 1997 | Winter |
| 7,525 | 1995 | Winter |
| 4,556 | 1994 | Winter |
| 4,498 | 1991 | Winter |
| Lambert Channel/Hornby Island Waters (BC061) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 | 2017 | Spring |
| 5,000 | 2016 | Spring |
| 4,300 - 45,000 | 2010 | Spring |
| 5,176 | 2001 | Winter |
| 39,000 | 1990 | Spring |
| 41,000 | 1989 | Spring |
| ? | ? | Summer |
| Comox Valley (BC014) | ||
|---|---|---|
| Number | Year | Season |
| 5,000 - 32,000 | 2014 | Spring |
| 5,000 - 8,000 | 2013 | Spring |
| 4,697 | 2012 | Winter |
| 4,363 | 2010 | Winter |
| 5,000 - 8,000 | 2010 | Fall |
| 4,310 | 2005 | Winter |
| 6,914 - 9,244 | 2004 | Winter |
| 9,244 | 2003 | Winter |
| 6,866 - 8,597 | 2002 | Winter |
| 8,597 | 2001 | Winter |
| 5,685 | 2000 | Winter |
| 6,310 | 1997 | Winter |
| 7,525 | 1995 | Winter |
| 4,556 | 1994 | Winter |
| 4,498 | 1991 | Winter |
| Baynes Sound (BC057) | ||
|---|---|---|
| Number | Year | Season |
| 9,025 | 2017 | Spring |
| 7,280 | 2013 | Spring |
| 15,000 | 2010 | Spring |
| 7,000 | 2004 | Spring |
| 8,000 | 2001 | Spring |
| 6,250 | 1981 | Winter |
| Little Qualicum Estuary to Nanoose Bay (BC056) | ||
|---|---|---|
| Number | Year | Season |
| 4,955 | 2018 | Spring |
| 4,500 | 2017 | Spring |
| 5,105 | 2012 | Winter |
| 5,134 | 2011 | Winter |
| 5,000 | 2011 | Spring |
| 5,000 - 10,000 | 2005 | Spring |
| 4,995 | 2002 | Winter |
| 6,800 | 2001 | Spring |
| 5,630 | 1998 | Winter |
| 5,075 | 1994 | Winter |
| 5,149 | 1991 | Winter |
| 1,500 | 1985 | Winter |
| ? | ? | Winter |
| Xaana Kaahlii GawGaay Skidegate Inlet (BC145) | ||
|---|---|---|
| Number | Year | Season |
| 6,342 | 2008 | Winter |
| 4,501 | 2002 | Winter |
| ? | ? | Summer |
| Squamish River Area (BC023) | ||
|---|---|---|
| Number | Year | Season |
| 4,486 | 2013 | Winter |
| 5,041 | 2012 | Winter |
| 4,313 | 2007 | Winter |
| 4,869 | 2004 | Winter |
| 5,093 | 2003 | Winter |
| 5,156 | 2001 | Winter |
| Chain Islets & Great Chain Island (BC045) | ||
|---|---|---|
| Number | Year | Season |
| 4,864 | 1986 | Summer |
| Mandarte Island (BC046) | ||
|---|---|---|
| Number | Year | Season |
| 4,726 | 1987 | Summer |
| Kyuquot Channel Islets (BC088) | ||
|---|---|---|
| Number | Year | Season |
| 4,546 | 1988 | Summer |