Mergus serrator (Red-breasted Merganser)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Morten Jørgen Didriksen | Østfold, Norway | 3 | 1 | 0 | 2016-01-24 |
| Karl Thorvaldsen | Trøndelag, Norway | 3 | 1 | 0 | 2024-01-23 |
| Anita Larsen Henstein | Nordland, Norway | 3 | 1 | 0 | 2022-01-29 |
| Arnfinn Kjønsvik | Trøndelag, Norway | 3 | 1 | 0 | 2013-01-23 |
| Knut Skoghei | Vestland, Norway | 3 | 1 | 0 | 2024-01-28 |
| Jostein Solvang | Nordland, Norway | 3 | 1 | 0 | 2018-01-28 |
| Bodil Wiik Strøm | Nordland, Norway | 3 | 1 | 0 | 2022-01-29 |
| stine varhaug | Rogaland, Norway | 3 | 1 | 0 | 2023-02-05 |
| Lena Helvik | Vestland, Norway | 3 | 1 | 0 | 2024-01-22 |
| leif eriksen | Telemark, Norway | 3 | 1 | 0 | 2024-01-28 |
| Gunn Eli Sommerhill | Vestland, Norway | 3 | 1 | 0 | 2023-01-29 |
| Leif Christian Torsøe | Agder, Norway | 3 | 1 | 0 | 2017-04-25 |
| Monica Norås Danielsen | Troms, Norway | 3 | 1 | 0 | 2022-01-29 |
| Inge Olav Schaathun | Vestland, Norway | 2 | 1 | 0 | 2022-01-23 |
| Rolf Hjortland | Vestland, Norway | 2 | 1 | 0 | 2020-01-26 |
| Truls Erikstad | Troms, Norway | 2 | 1 | 0 | 2023-02-04 |
| Turid Iversen | Møre og Romsdal, Norway | 2 | 1 | 0 | 2021-02-01 |
| Andreas LIndseth-Haugvik | Trøndelag, Norway | 2 | 1 | 0 | 2024-01-21 |
| Gøril Berg | Trøndelag, Norway | 2 | 1 | 0 | 2020-01-26 |
| Jannicke tanita johnson | Møre og Romsdal, Norway | 2 | 1 | 0 | 2019-01-26 |
| Stryn ungdomsskule | Vestland, Norway | 2 | 1 | 0 | 2003-05-19 |
| Runs Kvalsund | Møre og Romsdal, Norway | 2 | 1 | 0 | 2022-01-30 |
| Steinar Sannes | Telemark, Norway | 2 | 1 | 0 | 2024-01-27 |
| Anne-Magrethe Kausland | Vestland, Norway | 2 | 1 | 0 | 2022-01-29 |
| Peggy Thorbjørnsen | Oslo, Norway | 2 | 1 | 0 | 2022-01-30 |
| Per bjørnar Dale | Møre og Romsdal, Norway | 2 | 1 | 0 | 2021-01-30 |
| Cathrine Kvalvik | Vestland, Norway | 2 | 1 | 0 | 2024-02-03 |
| Nina Birgitte Røed Borgenvik | Vestfold, Norway | 2 | 1 | 1 | 2017-01-22 |
| Margrethe Kilvik | Nordland, Norway | 2 | 1 | 0 | 2023-01-30 |
| oddbjørn Sæter | Troms, Norway | 2 | 1 | 0 | 2024-01-29 |
| Christin Breyholtz | Buskerud, Norway | 2 | 1 | 0 | 2023-01-29 |
| Richard | Akershus, Norway | 2 | 1 | 0 | 2019-03-24 |
| Trond Sværen | Vestland, Norway | 2 | 1 | 0 | 2012-01-29 |
| Charlotte Bakke | Telemark, Norway | 2 | 1 | 0 | 2017-06-02 |
| Hauk Paulsen | Trøndelag, Norway | 2 | 1 | 0 | 2011-01-29 |
| Anita Hamre | Rogaland, Norway | 2 | 1 | 0 | 2022-02-05 |
| john inge Berg | Nordland, Norway | 2 | 1 | 0 | 2023-01-29 |
| Anne Helen Robberstad | Rogaland, Norway | 2 | 1 | 0 | 2022-02-06 |
| Magne Flåten | Vestfold, Norway | 2 | 1 | 0 | 2008-02-18 |
| Lars Nilsson | Møre og Romsdal, Norway | 2 | 1 | 0 | 2017-01-28 |
| Silje Skrede | Møre og Romsdal, Norway | 2 | 1 | 0 | 2014-03-17 |
| Britt Jenssen | Troms, Norway | 2 | 1 | 0 | 2021-01-30 |
| Anne Lise Breievne | Vestland, Norway | 2 | 1 | 0 | 2022-02-01 |
| Roar Ottesen | Nordland, Norway | 2 | 1 | 0 | 2023-01-21 |
| Fauske videregående skole | Nordland, Norway | 2 | 1 | 0 | 1990-09-04 |
| Edin Reinholtsen | Nordland, Norway | 2 | 1 | 0 | 2019-04-27 |
| Rune Waldal | Møre og Romsdal, Norway | 2 | 1 | 0 | 2024-01-27 |
| Eli Brattland | Nordland, Norway | 2 | 1 | 0 | 2010-01-06 |
| Bjarne Nikolaisen | Nordland, Norway | 2 | 1 | 0 | 2022-01-30 |
| Oddrun Vold | Trøndelag, Norway | 2 | 1 | 0 | 2016-01-05 |