Haematopus
| Year | Arter/grupper | Localities | Participants | Observations |
|---|---|---|---|---|
| Totalt alle år | 1 | 1090 | 755 | 2282 |
| 2014 | 1 | 56 | 54 | 129 |
| 2003 | 1 | 13 | 14 | 35 |
| 2013 | 1 | 77 | 73 | 142 |
| 2008 | 1 | 188 | 170 | 235 |
| 2007 | 1 | 257 | 228 | 302 |
| 2001 | 1 | 7 | 7 | 8 |
| 2009 | 1 | 62 | 59 | 70 |
| 2011 | 1 | 67 | 61 | 81 |
| 2005 | 1 | 31 | 12 | 73 |
| 2010 | 1 | 76 | 68 | 90 |
| 2006 | 1 | 36 | 11 | 51 |
| 2004 | 1 | 17 | 15 | 37 |
| 2016 | 1 | 53 | 51 | 82 |
| 2002 | 1 | 6 | 7 | 13 |
| 2012 | 1 | 66 | 64 | 94 |
| 1994 | 1 | 1 | 1 | 2 |
| 1993 | 1 | 2 | 2 | 2 |
| 2015 | 1 | 43 | 41 | 81 |
| 2000 | 1 | 1 | 1 | 1 |
| 1990 | 1 | 1 | 1 | 1 |
| 2017 | 1 | 47 | 44 | 74 |
| 2018 | 1 | 186 | 69 | 299 |
| 2019 | 1 | 51 | 49 | 73 |
| 2020 | 1 | 63 | 54 | 107 |
| 2023 | 1 | 40 | 25 | 53 |
| 2022 | 1 | 39 | 29 | 56 |
| 2024 | 1 | 34 | 30 | 44 |
| 2021 | 1 | 36 | 34 | 47 |