| 2025-03-10 | Small duck |
| 2022-10-30 | Bird of the Baltic |
| 2017-11-17 | Duck variety |
| 2017-05-02 | Eurasian duck |
| 2017-02-20 | Eurasian duck |
| 2014-09-28 | Duck that nests in tree hollows |
| 2014-07-26 | Cousin of a goldeneye |
| 2013-05-09 | Northern duck |
| 2012-05-04 | Goldeneye relative |
| 2011-09-13 | Eurasian duck |
| 2009-10-24 | Old World duck |
| 2007-06-09 | Old World duck |
| 2007-05-21 | Eurasian duck |
| 2006-06-07 | Old World duck |
| 2006-05-06 | Merganser relative |
| 2004-02-13 | Old World duck |
| 2003-10-24 | Eurasian diving duck |
| 2003-08-14 | Duck with a large white crest |
| 2001-07-15 | Smallest of the mergansers |
| 1998-05-31 | Small merganser |
| 1998-05-18 | Eurasian duck |
| 1998-01-01 | Merganser |
| 1997-05-08 | Fish-eating duck |
| 1996-12-29 | Saw-billed duck |
| 1996-12-13 | Diving duck |
| 1996-07-28 | Eurasian duck |
| 1995-11-24 | Diving duck |