Species: House Martin (Delichon urbicum)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| 2024 | 1 | 8 | 8 | 9 |
| 2023 | 1 | 9 | 9 | 12 |
| 2022 | 1 | 12 | 11 | 17 |
| 2021 | 1 | 15 | 11 | 20 |
| 2020 | 1 | 10 | 10 | 12 |
| 2019 | 1 | 14 | 14 | 19 |
| 2018 | 1 | 8 | 8 | 42 |
| 2017 | 1 | 100 | 15 | 149 |
| 2016 | 1 | 11 | 11 | 38 |
| 2015 | 1 | 9 | 9 | 9 |
| 2014 | 1 | 9 | 9 | 11 |
| 2013 | 1 | 10 | 10 | 11 |
| 2012 | 1 | 12 | 12 | 13 |
| 2011 | 1 | 8 | 8 | 10 |
| 2010 | 1 | 5 | 5 | 8 |
| 2009 | 1 | 5 | 5 | 8 |
| 2008 | 1 | 14 | 9 | 16 |
| 2007 | 1 | 16 | 9 | 17 |
| 2006 | 1 | 10 | 2 | 10 |
| 2005 | 1 | 9 | 1 | 19 |
| 2004 | 1 | 3 | 3 | 4 |
| 2003 | 1 | 3 | 4 | 5 |
| 1999 | 1 | 1 | 1 | 2 |
| 1994 | 1 | 2 | 2 | 2 |
| 1992 | 1 | 2 | 2 | 2 |
| 1990 | 1 | 1 | 1 | 1 |
| 1989 | 1 | 1 | 1 | 1 |
| Totalt alle år | 1 | 220 | 97 | 467 |