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
| Creston Valley (BC179) | ||
|---|---|---|
| Nombre | Année | Saison |
| 20 000 | 2013 | Printemps |
| 50 000 | 2012 | Automne |
| 25 000 | 2012 | Printemps |
| 35 000 | 2011 | Automne |
| 12 000 | 2010 | Printemps |
| 13 678 | 1990 | Automne |
| 27 563 | 1990 | Printemps |
| 17 163 | 1989 | Automne |
| 17 569 | 1989 | Printemps |
| 15 080 | 1988 | Automne |
| 13 464 | 1985 | Automne |
| 34 872 | 1985 | Printemps |
| 22 700 | 1980 | Automne |
| 22 700 | 1980 | Printemps |
| 51 700 | 1978 | Automne |
| 57 000 | 1977 | Automne |
| 47 540 | 1974 | Automne |
| 34 500 | 1973 | Automne |
| ? | ? | Été |