Heermann's Gull
Scientific Name: Larus heermanni
Thresholds:
- Cleland Island & Southeast Clayoquot Sound (BC080)500 (max.)
- Sidney Channel (BC047)450 (max.)
- Baynes Sound (BC057)335 (max.)
- K'ómoks (BC272)335 (max.)
- Chain Islets & Great Chain Island (BC045)300 (max.)
- English Bay, Burrard Inlet & Howe Sound (BC020)170 (max.)
- Lambert Channel/Hornby Island Waters (BC061)100 (max.)
- Tofino Mudflats (BC002)100 (max.)
- Barkley Sound (BC075)85 (max.)
- Mandarte Island (BC046)85 (max.)
- Active Pass (BC015)55 (max.)
- Little Qualicum Estuary to Nanoose Bay (BC056)55 (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.
Regional SAR
This threshold is static and standardized: Passeriformes (e.g. perching/songbirds) = 90 individuals (or 30 pairs); non-Passeriformes = 30 individuals (or 10 pairs). Only species listed by the IUCN as Vulnerable are presently eligible.
| Cleland Island & Southeast Clayoquot Sound (BC080) | ||
|---|---|---|
| Number | Year | Season |
| 90 | 2021 | Fall |
| 42 - 60 | 2020 | Fall |
| 35 - 100 | 2019 | Fall |
| 55 | 2019 | Summer |
| 23 - 75 | 2018 | Fall |
| 24 - 46 | 2018 | Summer |
| 30 | 2016 | Fall |
| 35 - 60 | 2016 | Summer |
| 25 | 2015 | Summer |
| 30 - 450 | 2014 | Fall |
| 25 - 135 | 2014 | Summer |
| 50 | 2013 | Fall |
| 100 | 2013 | Summer |
| 60 | 2012 | Fall |
| 40 - 100 | 2010 | Fall |
| 140 | 2008 | Fall |
| 80 - 120 | 2004 | Fall |
| 50 | 2003 | Fall |
| 30 - 50 | 2003 | Summer |
| 40 - 500 | 2002 | Fall |
| 25 - 70 | 2001 | Fall |
| 50 | 1999 | Fall |
| 200 | 1996 | Fall |
| 42 | 1996 | Summer |
| Sidney Channel (BC047) | ||
|---|---|---|
| Number | Year | Season |
| 27 | 2021 | Summer |
| 30 | 2020 | Fall |
| 38 | 2020 | Summer |
| 140 - 200 | 2019 | Fall |
| 30 - 450 | 2019 | Summer |
| 51 - 70 | 2018 | Fall |
| 45 - 52 | 2018 | Summer |
| 25 - 67 | 2017 | Fall |
| 24 - 100 | 2016 | Fall |
| 25 - 50 | 2016 | Summer |
| 40 - 45 | 2015 | Fall |
| 67 - 105 | 2015 | Summer |
| 65 - 75 | 2014 | Fall |
| 150 | 2009 | Fall |
| 24 - 180 | 2009 | Summer |
| 24 | 2007 | Fall |
| 30 - 90 | 2007 | Summer |
| 65 | 2004 | Fall |
| 45 - 95 | 2001 | Fall |
| 50 | 2000 | Summer |
| 30 | 1998 | Fall |
| 43 | 1998 | Summer |
| 70 | 1997 | Fall |
| 58 | 1997 | Summer |
| 31 - 56 | 1996 | Fall |
| 26 | 1996 | Summer |
| 24 - 74 | 1993 | Fall |
| 25 - 83 | 1993 | Summer |
| 25 - 33 | 1992 | Fall |
| 50 - 100 | 1992 | Summer |
| 41 | 1990 | Fall |
| 85 | 1990 | Summer |
| Baynes Sound (BC057) | ||
|---|---|---|
| Number | Year | Season |
| 335 | 2009 | Spring |
| 61 | 2008 | Winter |
| 35 | 2006 | Spring |
| K'ómoks (BC272) | ||
|---|---|---|
| Number | Year | Season |
| 100 | 2014 | Fall |
| 335 | 2009 | Spring |
| 61 | 2008 | Winter |
| 35 | 2006 | Spring |
| Chain Islets & Great Chain Island (BC045) | ||
|---|---|---|
| Number | Year | Season |
| 30 - 60 | 2021 | Fall |
| 150 | 2020 | Fall |
| 80 | 2019 | Fall |
| 85 | 2018 | Fall |
| 150 | 2016 | Fall |
| 110 - 130 | 2015 | Fall |
| 300 | 2014 | Summer |
| 200 | 2013 | Fall |
| 26 | 2013 | Summer |
| 140 | 2004 | Fall |
| 32 | 1993 | Summer |
| English Bay, Burrard Inlet & Howe Sound (BC020) | ||
|---|---|---|
| Number | Year | Season |
| 170 | 2008 | Winter |
| 75 | 2000 | Spring |
| Lambert Channel/Hornby Island Waters (BC061) | ||
|---|---|---|
| Number | Year | Season |
| 100 | 2014 | Fall |
| Tofino Mudflats (BC002) | ||
|---|---|---|
| Number | Year | Season |
| 25 | 2021 | Fall |
| 30 - 95 | 2019 | Fall |
| 30 | 2015 | Fall |
| 100 | 2002 | Fall |
| 30 - 75 | 1998 | Summer |
| 30 | 1994 | Fall |
| Barkley Sound (BC075) | ||
|---|---|---|
| Number | Year | Season |
| 30 | 2017 | Fall |
| 24 | 2015 | Summer |
| 35 | 2012 | Fall |
| 25 | 2009 | Fall |
| 60 | 2003 | Fall |
| 85 | 2000 | Fall |
| 50 | 1996 | Fall |
| Mandarte Island (BC046) | ||
|---|---|---|
| Number | Year | Season |
| 65 - 85 | 2019 | Fall |
| 26 | 2018 | Fall |
| Active Pass (BC015) | ||
|---|---|---|
| Number | Year | Season |
| 46 - 55 | 2015 | Fall |
| 30 | 1993 | Fall |
| Little Qualicum Estuary to Nanoose Bay (BC056) | ||
|---|---|---|
| Number | Year | Season |
| 24 | 2014 | Fall |
| 55 | 2008 | Fall |
| 25 | 2002 | Fall |