Global
1% of the global abundance. This threshold is used to identify tigger species and IBA's under A4i/ii and A4iv categories
Regional/Continental
1% of the regional/continental population Estimate
Regional SAR
Solely IUCN Vulnerable listed species are presently eligible. The Regional threshold for these birds is static and standardized: Passeriformes (e.g. perching/songbirds) = 90 individuals (or 30 pairs); non-Passeriformes = 30 individuals (or 10 pairs).
Sub-regional/National SAR
The sub-regional/national SAR population threshold = 1% of the COSEWIC population estimate within the region (provinces/territories) the species is listed as being at risk. This threshold is used to identify trigger species and IBAs under criterion C1.
| Greater Vancouver Watershed (BC038) | ||
|---|---|---|
| Nombre | Année | Saison |
| 5 | 1995 | Été |
| 5 | 1995 | Hiver |
| 1 | 1992 | Printemps |
| 1 - 2 | 1991 | Été |
| 1 | 1991 | Printemps |
| Sumallo River/Skagit Valley (BC035) | ||
|---|---|---|
| Nombre | Année | Saison |
| 1 | 2007 | Printemps |
| 2 | 2005 | Printemps |
| 1 | 2001 | Été |
| 1 | 2001 | Printemps |
| 1 | 1997 | Été |
| 2 | 1997 | Printemps |
| 1 | 1996 | Été |
| 4 | 1995 | Été |
| 4 | 1995 | Hiver |
| English Bay & Burrard Inlet (BC020) | ||
|---|---|---|
| Nombre | Année | Saison |
| 1 | 2003 | Automne |