Mergus serrator (Red-breasted Merganser)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Hans Tjernshaugen | Akershus, Norway | 1 | 1 | 0 | 2012-01-28 |
| Nils Håvard Dahl | Trøndelag, Norway | 1 | 1 | 1 | 2019-01-26 |
| Reidun Marie Nyygård | Rogaland, Norway | 1 | 1 | 0 | 2012-01-29 |
| Roar Per Dahl | Nordland, Norway | 1 | 1 | 0 | 2016-01-29 |
| Tiril Bakke | Agder, Norway | 1 | 1 | 0 | 2012-03-10 |
| Hanne Thomsen | Rogaland, Norway | 1 | 1 | 0 | 2015-01-25 |
| Jøran Hansen | Nordland, Norway | 1 | 1 | 0 | 2018-02-04 |
| Gunnar Stenhaug | Trøndelag, Norway | 1 | 1 | 1 | 2013-02-09 |
| Anne-Bente Zumach | Telemark, Norway | 1 | 1 | 0 | 2014-09-05 |
| Hans Kristian Werkland | Trøndelag, Norway | 1 | 1 | 0 | 2013-10-22 |
| Per Sveinung Lønning | Vestland, Norway | 1 | 1 | 0 | 2014-01-22 |
| Baard Dalemark | Agder, Norway | 1 | 1 | 0 | 2014-01-25 |
| John R. Johnsen | Nordland, Norway | 1 | 1 | 0 | 2014-01-26 |
| Nann Kristin Kvivesen | Finnmark, Norway | 1 | 1 | 0 | 2021-02-27 |
| Jan Jensen | Nordland, Norway | 1 | 1 | 0 | 2015-01-28 |
| Liv Anne | Akershus, Norway | 1 | 1 | 0 | 2017-05-01 |
| Svein Willie Holbu | Vestfold, Norway | 1 | 1 | 0 | 2015-01-24 |
| Ken Andersen | Telemark, Norway | 1 | 1 | 0 | 2016-01-30 |
| Eivind Smørvik | Nordland, Norway | 1 | 1 | 0 | 2015-01-25 |
| Kjell Sæther | Trøndelag, Norway | 1 | 1 | 0 | 2018-01-27 |
| Nils Christian Bjørgo | Vestland, Norway | 1 | 1 | 0 | 2019-01-27 |
| Ole Blengsli | Trøndelag, Norway | 1 | 1 | 0 | 2016-01-31 |
| Aasgjerd J.S. Forsaa | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-01-24 |
| Monita Amore Fevang Alstadsæter | Vestfold, Norway | 1 | 1 | 1 | 2015-03-04 |
| Sonja Dalemark | Agder, Norway | 1 | 1 | 0 | 2015-04-07 |
| Charlotte Hallerud | Trøndelag, Norway | 1 | 1 | 0 | 2020-01-26 |
| OveErdal | Vestland, Norway | 1 | 1 | 0 | 2016-01-30 |
| Marianne Laading | Vestland, Norway | 1 | 1 | 0 | 2017-01-29 |
| Heidi Esjeholm | Nordland, Norway | 1 | 1 | 0 | 2017-05-07 |
| John Helge Olsen | Rogaland, Norway | 1 | 1 | 0 | 2021-01-31 |
| Anne Elise Bakkevig | Rogaland, Norway | 1 | 1 | 0 | 2018-02-22 |
| UiT - Institutt for lærerutdanning og pedagogikk | Troms, Norway | 1 | 1 | 0 | 2023-01-28 |
| Tone Sandvik | Nordland, Norway | 1 | 1 | 0 | 2018-02-03 |
| May Liza Johansen | Vestland, Norway | 1 | 1 | 0 | 2021-01-31 |
| Svein Grimseid | Vestland, Norway | 1 | 1 | 0 | 2017-01-29 |
| Frank Storli | Nordland, Norway | 1 | 1 | 0 | 2017-01-29 |
| halvor haugen | Akershus, Norway | 1 | 1 | 0 | 2017-01-29 |
| Odd Hjorth -Sørensen | Vestfold, Norway | 1 | 1 | 0 | 2018-04-15 |
| Magne Espeland | Rogaland, Norway | 1 | 1 | 0 | 2019-01-27 |
| Arve Østerud | Nordland, Norway | 1 | 1 | 0 | 2020-01-26 |
| Bjørg Almås | Vestland, Norway | 1 | 1 | 0 | 2018-01-27 |
| Kjell Sletsjøe | Vestfold, Norway | 1 | 1 | 0 | 2021-01-26 |
| Kristoffer Kiærbech | Troms, Norway | 1 | 1 | 0 | 2018-05-26 |
| Oddvar Rørtveit | Vestland, Norway | 1 | 1 | 0 | 2018-01-04 |
| Frank Markussen | Nordland, Norway | 1 | 1 | 0 | 2019-04-25 |
| Kent Olsen | Troms, Norway | 1 | 1 | 0 | 2023-02-04 |
| Jessica Marks | Akershus, Norway | 1 | 1 | 0 | 2021-01-30 |
| Frode Reppe | Trøndelag, Norway | 1 | 1 | 0 | 2019-01-24 |