Iceland Gull (Thayer's)
Scientific Name: Larus glaucoides thayeri
Thresholds:
- Lambert Channel/Hornby Island Waters (BC061)4,000 (max.)
- Little Qualicum Estuary to Nanoose Bay (BC056)2,911 (max.)
- Comox Valley (BC014)2,000 (max.)
- K'ómoks (BC272)2,000 (max.)
- Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017)1,513 (max.)
- Baynes Sound (BC057)1,367 (max.)
- Coats Island/Cape Pembroke (NU005)1,000 (max.)
- Squamish River Area (BC023)600 (max.)
- Cowichan estuary (BC048)530 (max.)
- English Bay, Burrard Inlet & Howe Sound (BC020)500 (max.)
- Shallow Bay, Big Slough and Swan Lake (YK014)360 (max.)
- East Bay/Native Bay (NU023)300 (max.)
- Tofino Mudflats (BC002)300 (max.)
- Active Pass (BC015)200 (max.)
- Ramsay and Northern Juan Perez Sound Islands (BC140)200 (max.)
- Barkley Sound (BC075)186 (max.)
- Big Bay south to Delusion Bay (BC124)165 (max.)
- Snake Island (BC055)150 (max.)
- Xaana Kaahlii GawGaay Skidegate Inlet (BC145)129 (max.)
- Cleland Island & Southeast Clayoquot Sound (BC080)98 (max.)
- Sidney Channel (BC047)80 (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.
| Lambert Channel/Hornby Island Waters (BC061) | ||
|---|---|---|
| Number | Year | Season |
| 80 | 2017 | Spring |
| 200 - 250 | 2017 | Winter |
| 110 - 260 | 2016 | Winter |
| 136 - 400 | 2016 | Spring |
| 80 - 780 | 2015 | Winter |
| 150 - 200 | 2015 | Fall |
| 150 - 1,000 | 2015 | Spring |
| 150 - 1,500 | 2014 | Spring |
| 80 - 600 | 2014 | Winter |
| 150 - 195 | 2013 | Winter |
| 120 - 160 | 2013 | Spring |
| 105 | 2012 | Fall |
| 200 - 500 | 2012 | Spring |
| 86 - 359 | 2011 | Fall |
| 400 | 2011 | Spring |
| 200 | 2011 | Winter |
| 200 - 500 | 2010 | Spring |
| 98 - 114 | 2010 | Winter |
| 105 - 345 | 2009 | Fall |
| 150 | 2009 | Spring |
| 1,501 | 2008 | Spring |
| 104 - 120 | 2008 | Winter |
| 88 - 4,000 | 2007 | Fall |
| 300 - 2,000 | 2007 | Spring |
| 150 - 280 | 2006 | Spring |
| 100 - 252 | 2006 | Winter |
| 167 | 2005 | Fall |
| 500 | 2005 | Spring |
| 138 | 2005 | Winter |
| 81 | 2004 | Winter |
| 152 - 400 | 2003 | Spring |
| 300 - 1,200 | 2003 | Winter |
| 260 | 2001 | Spring |
| 100 - 140 | 2000 | Spring |
| 359 | 2000 | Winter |
| Little Qualicum Estuary to Nanoose Bay (BC056) | ||
|---|---|---|
| Number | Year | Season |
| 90 | 2022 | Winter |
| 100 | 2021 | Winter |
| 80 | 2020 | Winter |
| 130 | 2020 | Spring |
| 150 - 300 | 2019 | Fall |
| 280 - 510 | 2019 | Spring |
| 81 - 593 | 2017 | Winter |
| 160 - 904 | 2017 | Spring |
| 137 - 557 | 2016 | Winter |
| 90 - 412 | 2016 | Fall |
| 80 - 382 | 2016 | Spring |
| 100 - 1,051 | 2015 | Winter |
| 125 - 2,911 | 2015 | Spring |
| 94 - 2,117 | 2014 | Winter |
| 100 - 175 | 2014 | Fall |
| 120 - 1,000 | 2014 | Spring |
| 150 - 560 | 2013 | Winter |
| 150 - 400 | 2013 | Fall |
| 141 - 734 | 2013 | Spring |
| 85 - 1,303 | 2012 | Winter |
| 204 | 2012 | Fall |
| 310 - 528 | 2012 | Spring |
| 100 - 1,689 | 2011 | Winter |
| 100 - 200 | 2011 | Fall |
| 460 | 2011 | Spring |
| 79 - 500 | 2010 | Winter |
| 326 | 2010 | Fall |
| 1,375 | 2010 | Spring |
| 131 - 647 | 2009 | Winter |
| 200 - 500 | 2009 | Spring |
| 78 - 154 | 2008 | Winter |
| 158 | 2008 | Fall |
| 151 - 600 | 2008 | Spring |
| 139 - 373 | 2007 | Winter |
| 150 | 2007 | Fall |
| 176 - 1,280 | 2007 | Spring |
| 120 - 212 | 2006 | Winter |
| 83 | 2006 | Fall |
| 432 - 1,745 | 2006 | Spring |
| 782 | 2005 | Winter |
| 76 - 300 | 2005 | Fall |
| 1,390 | 2005 | Spring |
| 77 - 254 | 2004 | Winter |
| 84 | 2004 | Fall |
| 150 - 180 | 2004 | Spring |
| 100 - 770 | 2003 | Winter |
| 240 | 2003 | Fall |
| 120 - 1,000 | 2003 | Spring |
| 120 - 2,032 | 2002 | Winter |
| 500 | 2002 | Fall |
| 207 - 392 | 2001 | Winter |
| 90 | 2001 | Spring |
| 250 | 2000 | Spring |
| 96 | 1999 | Winter |
| 136 | 1998 | Winter |
| 119 | 1997 | Winter |
| 509 | 1995 | Winter |
| 963 | 1994 | Winter |
| 773 | 1992 | Winter |
| 528 | 1991 | Winter |
| 960 | 1977 | Winter |
| Comox Valley (BC014) | ||
|---|---|---|
| Number | Year | Season |
| 220 | 2016 | Fall |
| 100 - 300 | 2016 | Winter |
| 109 - 150 | 2015 | Winter |
| 100 - 260 | 2015 | Spring |
| 105 - 177 | 2014 | Winter |
| 90 - 140 | 2014 | Fall |
| 98 - 2,000 | 2014 | Spring |
| 219 | 2013 | Winter |
| 200 - 300 | 2013 | Fall |
| 300 - 800 | 2013 | Spring |
| 328 - 670 | 2012 | Winter |
| 80 | 2012 | Fall |
| 460 | 2012 | Spring |
| 129 - 200 | 2011 | Winter |
| 150 - 155 | 2011 | Fall |
| 100 | 2011 | Spring |
| 123 - 170 | 2010 | Winter |
| 150 | 2010 | Fall |
| 122 | 2009 | Winter |
| 78 | 2008 | Winter |
| 79 | 2007 | Winter |
| 150 - 254 | 2006 | Winter |
| 101 | 2005 | Winter |
| 110 - 381 | 2004 | Winter |
| 140 | 2004 | Spring |
| 78 - 500 | 2003 | Winter |
| 210 | 2002 | Fall |
| 110 | 2001 | Fall |
| 97 | 2001 | Spring |
| 260 | 2001 | Winter |
| 249 - 496 | 2000 | Winter |
| 496 | 1999 | Winter |
| 118 | 1998 | Winter |
| 94 | 1995 | Winter |
| K'ómoks (BC272) | ||
|---|---|---|
| Number | Year | Season |
| 150 - 420 | 2022 | Winter |
| 160 - 2,600 | 2021 | Spring |
| 220 | 2021 | Winter |
| 175 - 860 | 2020 | Spring |
| 140 - 189 | 2020 | Winter |
| 102 | 2019 | Fall |
| 123 | 2019 | Spring |
| 100 - 170 | 2019 | Winter |
| 140 | 2018 | Fall |
| 80 - 250 | 2018 | Spring |
| 205 - 585 | 2018 | Winter |
| 113 - 1,000 | 2017 | Winter |
| 150 | 2017 | Fall |
| 80 | 2017 | Spring |
| 240 - 777 | 2016 | Winter |
| 100 - 220 | 2016 | Fall |
| 136 - 400 | 2016 | Spring |
| 300 - 1,367 | 2015 | Winter |
| 150 - 200 | 2015 | Fall |
| 100 - 1,000 | 2015 | Spring |
| 151 - 600 | 2014 | Winter |
| 90 - 140 | 2014 | Fall |
| 850 - 2,000 | 2014 | Spring |
| 195 - 339 | 2013 | Winter |
| 200 - 300 | 2013 | Fall |
| 500 - 800 | 2013 | Spring |
| 328 - 670 | 2012 | Winter |
| 80 - 105 | 2012 | Fall |
| 200 - 500 | 2012 | Spring |
| 129 - 518 | 2011 | Winter |
| 86 - 359 | 2011 | Fall |
| 100 - 400 | 2011 | Spring |
| 123 - 317 | 2010 | Winter |
| 150 | 2010 | Fall |
| 200 - 500 | 2010 | Spring |
| 120 - 236 | 2009 | Winter |
| 105 - 345 | 2009 | Fall |
| 150 | 2009 | Spring |
| 135 - 1,501 | 2008 | Spring |
| 78 - 127 | 2008 | Winter |
| 79 - 119 | 2007 | Winter |
| 88 - 350 | 2007 | Fall |
| 300 - 2,000 | 2007 | Spring |
| 100 - 254 | 2006 | Winter |
| 150 - 284 | 2006 | Spring |
| 87 - 138 | 2005 | Winter |
| 167 | 2005 | Fall |
| 112 - 500 | 2005 | Spring |
| 81 - 269 | 2004 | Winter |
| 140 - 800 | 2004 | Spring |
| 192 - 1,200 | 2003 | Winter |
| 117 | 2003 | Fall |
| 111 - 400 | 2003 | Spring |
| 92 | 2002 | Winter |
| 210 - 225 | 2002 | Fall |
| 200 - 296 | 2002 | Spring |
| 104 - 450 | 2001 | Winter |
| 110 | 2001 | Fall |
| 97 - 260 | 2001 | Spring |
| 166 - 359 | 2000 | Winter |
| 100 - 1,000 | 2000 | Spring |
| 77 - 496 | 1999 | Winter |
| 118 | 1998 | Winter |
| 94 - 111 | 1995 | Winter |
| 197 | 1994 | Winter |
| 260 | 1993 | Winter |
| 120 | 1992 | Winter |
| Boundary Bay - Roberts Bank - Sturgeon Bank (Fraser River Estuary) (BC017) | ||
|---|---|---|
| Number | Year | Season |
| 110 - 300 | 2017 | Winter |
| 150 - 826 | 2016 | Winter |
| 600 | 2015 | Winter |
| 205 - 500 | 2014 | Winter |
| 171 | 2013 | Winter |
| 245 | 2013 | Spring |
| 200 - 288 | 2012 | Winter |
| 161 | 2011 | Winter |
| 31 | 2011 | Fall |
| 500 - 1,044 | 2010 | Winter |
| 187 | 2009 | Spring |
| 187 - 200 | 2009 | Winter |
| 200 - 417 | 2008 | Winter |
| 320 - 417 | 2007 | Winter |
| 80 - 256 | 2006 | Winter |
| 100 - 205 | 2005 | Winter |
| 167 - 205 | 2004 | Winter |
| 155 - 167 | 2003 | Winter |
| 45 - 155 | 2002 | Winter |
| 126 | 2001 | Spring |
| 243 - 623 | 2001 | Winter |
| 100 - 284 | 2000 | Winter |
| 91 | 2000 | Fall |
| 115 - 851 | 1997 | Winter |
| 115 | 1997 | Spring |
| 500 | 1996 | Winter |
| 139 - 1,513 | 1995 | Winter |
| 512 | 1994 | Winter |
| 332 | 1993 | Winter |
| 183 - 694 | 1991 | Winter |
| 96 - 728 | 1990 | Winter |
| Baynes Sound (BC057) | ||
|---|---|---|
| Number | Year | Season |
| 900 - 1,000 | 2017 | Winter |
| 100 | 2016 | Fall |
| 777 | 2016 | Winter |
| 150 - 1,367 | 2015 | Winter |
| 100 | 2015 | Spring |
| 120 - 346 | 2014 | Winter |
| 122 | 2014 | Fall |
| 500 | 2014 | Spring |
| 300 - 339 | 2013 | Winter |
| 200 | 2013 | Fall |
| 100 | 2013 | Spring |
| 250 | 2012 | Spring |
| 518 | 2011 | Winter |
| 130 | 2011 | Fall |
| 236 - 317 | 2010 | Winter |
| 200 | 2010 | Spring |
| 236 | 2009 | Winter |
| 135 - 600 | 2008 | Spring |
| 102 | 2007 | Winter |
| 220 | 2006 | Spring |
| 87 | 2005 | Winter |
| 269 | 2004 | Winter |
| 800 | 2004 | Spring |
| 124 - 1,169 | 2003 | Winter |
| 92 | 2002 | Winter |
| 200 | 2002 | Spring |
| 104 - 450 | 2001 | Winter |
| 97 - 200 | 2001 | Spring |
| 100 - 1,000 | 2000 | Spring |
| 166 | 2000 | Winter |
| 1,104 | 2000 | Other |
| 77 | 1999 | Winter |
| 111 | 1995 | Winter |
| 197 | 1994 | Winter |
| 260 | 1993 | Winter |
| 120 | 1992 | Winter |
| 257 | 1981 | Winter |
| Coats Island/Cape Pembroke (NU005) | ||
|---|---|---|
| Number | Year | Season |
| 1,000 | 1992 | Fall |
| Squamish River Area (BC023) | ||
|---|---|---|
| Number | Year | Season |
| 124 | 2006 | Winter |
| 600 | 2003 | Fall |
| 504 | 2000 | Winter |
| 214 | 1997 | Winter |
| 184 | 1996 | Winter |
| Cowichan estuary (BC048) | ||
|---|---|---|
| Number | Year | Season |
| 80 | 2016 | Fall |
| 86 | 2014 | Winter |
| 86 | 2013 | Winter |
| 530 | 1985 | Winter |
| English Bay, Burrard Inlet & Howe Sound (BC020) | ||
|---|---|---|
| Number | Year | Season |
| 120 | 2012 | Spring |
| 250 - 500 | 2008 | Fall |
| 80 - 100 | 2006 | Fall |
| Shallow Bay, Big Slough and Swan Lake (YK014) | ||
|---|---|---|
| Number | Year | Season |
| 360 | 2016 | Spring |
| East Bay/Native Bay (NU023) | ||
|---|---|---|
| Number | Year | Season |
| 300 | 2001 | Summer |
| Tofino Mudflats (BC002) | ||
|---|---|---|
| Number | Year | Season |
| 300 | 2008 | Spring |
| Active Pass (BC015) | ||
|---|---|---|
| Number | Year | Season |
| 118 | 2022 | Winter |
| 82 - 122 | 2020 | Winter |
| 200 | 2019 | Winter |
| 138 - 250 | 2019 | Fall |
| 80 | 2018 | Winter |
| 76 - 169 | 2016 | Fall |
| 79 | 2014 | Winter |
| 77 | 2010 | Fall |
| 172 | 2008 | Fall |
| 92 | 2005 | Winter |
| Ramsay and Northern Juan Perez Sound Islands (BC140) | ||
|---|---|---|
| Number | Year | Season |
| 200 | 2011 | Fall |
| Barkley Sound (BC075) | ||
|---|---|---|
| Number | Year | Season |
| 1,037 - 1,395 | 2021 | Spring |
| 430 | 2021 | Winter |
| 97 | 2015 | Winter |
| 186 | 2010 | Winter |
| 175 | 2006 | Winter |
| 86 - 95 | 2005 | Winter |
| 107 | 2005 | Fall |
| 95 | 2005 | Spring |
| 109 - 121 | 1991 | Winter |
| Big Bay south to Delusion Bay (BC124) | ||
|---|---|---|
| Number | Year | Season |
| 165 | 2011 | Fall |
| 100 | 2010 | Fall |
| Snake Island (BC055) | ||
|---|---|---|
| Number | Year | Season |
| 150 | 2015 | Winter |
| Xaana Kaahlii GawGaay Skidegate Inlet (BC145) | ||
|---|---|---|
| Number | Year | Season |
| 100 | 2016 | Winter |
| 90 | 2015 | Fall |
| 129 | 2013 | Winter |
| 80 | 2011 | Fall |
| Cleland Island & Southeast Clayoquot Sound (BC080) | ||
|---|---|---|
| Number | Year | Season |
| 98 | 2002 | Spring |
| Sidney Channel (BC047) | ||
|---|---|---|
| Number | Year | Season |
| 80 | 2015 | Fall |
| 79 | 2005 | Winter |