Species: Mallard (Anas platyrhynchos)
| Year | Arter/grupper | Localities | Participants | Observations |
|---|
| 2024 | 1 | 107 | 107 | 111 |
| 2023 | 1 | 120 | 119 | 130 |
| 2022 | 1 | 137 | 135 | 152 |
| 2021 | 1 | 145 | 142 | 177 |
| 2020 | 1 | 79 | 77 | 103 |
| 2019 | 1 | 122 | 117 | 150 |
| 2018 | 1 | 102 | 96 | 120 |
| 2017 | 1 | 76 | 74 | 114 |
| 2016 | 1 | 85 | 83 | 113 |
| 2015 | 1 | 92 | 86 | 126 |
| 2014 | 1 | 48 | 45 | 121 |
| 2013 | 1 | 53 | 46 | 133 |
| 2012 | 1 | 41 | 38 | 78 |
| 2011 | 1 | 37 | 37 | 45 |
| 2010 | 1 | 46 | 42 | 53 |
| 2009 | 1 | 17 | 17 | 18 |
| 2008 | 1 | 18 | 15 | 24 |
| 2007 | 1 | 13 | 10 | 20 |
| 2006 | 1 | 14 | 12 | 47 |
| 2005 | 1 | 7 | 6 | 21 |
| 2004 | 1 | 10 | 10 | 30 |
| 2003 | 1 | 4 | 5 | 38 |
| 2002 | 1 | 5 | 7 | 15 |
| 2001 | 1 | 5 | 5 | 5 |
| 2000 | 1 | 2 | 2 | 2 |
| 1998 | 1 | 1 | 1 | 1 |
| 1997 | 1 | 1 | 1 | 1 |
| 1996 | 1 | 1 | 1 | 2 |
| 1994 | 1 | 33 | 33 | 36 |
| 1993 | 1 | 2 | 2 | 2 |
| 1992 | 1 | 5 | 6 | 7 |
| 1991 | 1 | 1 | 1 | 1 |
| 1990 | 1 | 6 | 6 | 7 |
| 1989 | 1 | 8 | 9 | 9 |
| Totalt alle år | 1 | 865 | 788 | 2012 |