Species: Buorm (Natrix natrix)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2019 | 1 | 1 | 1 | 2 |
| 2015 | 1 | 1 | 1 | 1 |
| 2014 | 1 | 1 | 1 | 1 |
| 2007 | 1 | 2 | 2 | 2 |
| 2006 | 1 | 2 | 2 | 6 |
| 1998 | 1 | 2 | 2 | 2 |
| 1997 | 1 | 3 | 3 | 5 |
| 1996 | 1 | 3 | 3 | 3 |
| 1995 | 1 | 3 | 3 | 3 |
| 1994 | 1 | 9 | 9 | 10 |
| 1993 | 1 | 5 | 5 | 8 |
| Totalt alle år | 1 | 28 | 26 | 43 |
