Larus marinus (Great Black-backed Gull)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Hallvard Bragstad | Trøndelag, Norway | 1 | 1 | 0 | 2010-01-31 |
| Torunn Marie Mooholdt | Vestfold, Norway | 1 | 1 | 0 | 2010-01-31 |
| Kjell Hammersland | Rogaland, Norway | 1 | 1 | 0 | 2016-01-04 |
| Roald Lomeland | Rogaland, Norway | 1 | 1 | 0 | 2014-01-26 |
| Runar Amdam | Møre og Romsdal, Norway | 1 | 1 | 0 | 2019-01-26 |
| Odd Hole | Møre og Romsdal, Norway | 1 | 1 | 0 | 2010-01-31 |
| Hans A. Olsvik | Møre og Romsdal, Norway | 1 | 1 | 0 | 2013-01-27 |
| Yngve Roy Kleppang | Vestfold, Norway | 1 | 1 | 0 | 2013-01-26 |
| Harald Bukkøy | Vestland, Norway | 1 | 1 | 0 | 2015-01-29 |
| Harald Ellefsen | Oslo, Norway | 1 | 1 | 0 | 2021-01-28 |
| Bovild Staabystrand | Agder, Norway | 1 | 1 | 0 | 2010-04-02 |
| Eivind W. Aavik | Agder, Norway | 1 | 1 | 0 | 2010-11-22 |
| Allan Berg | Nordland, Norway | 1 | 1 | 0 | 2010-04-28 |
| Arne Kjell Askeland | Rogaland, Norway | 1 | 1 | 0 | 2019-01-28 |
| Ken Møller | Vestfold, Norway | 1 | 1 | 0 | 2011-01-29 |
| Stein Tofte | Rogaland, Norway | 1 | 1 | 0 | 2022-01-30 |
| Knut Gamst | Finnmark, Norway | 1 | 1 | 0 | 2011-02-09 |
| Leif Bjørn Lunde | Rogaland, Norway | 1 | 1 | 0 | 2014-01-26 |
| Kari Aarøe Holter | Møre og Romsdal, Norway | 1 | 1 | 0 | 2014-01-26 |
| Kari Kvandal | Vestland, Norway | 1 | 1 | 0 | 2018-05-25 |
| alfhild pettersen | Nordland, Norway | 1 | 1 | 0 | 2018-10-05 |
| Gunnar Berge | Vestland, Norway | 1 | 1 | 0 | 2016-02-02 |
| Per og Bjørg Engebretsen | Vestfold, Norway | 1 | 1 | 0 | 2015-01-25 |
| Elizabeth Riiber Elgvin | Vestfold, Norway | 1 | 1 | 0 | 2024-01-27 |
| Torill Midtun | Vestland, Norway | 1 | 1 | 0 | 2020-01-27 |
| Leah Horwood | Rogaland, Norway | 1 | 1 | 0 | 2011-01-29 |
| Konrad Skarshaug | Møre og Romsdal, Norway | 1 | 1 | 0 | 2014-01-31 |
| Bjarne Nikolaisen | Nordland, Norway | 1 | 1 | 0 | 2020-01-25 |
| Hans Tjernshaugen | Akershus, Norway | 1 | 1 | 0 | 2012-01-28 |
| Heinke Foertsch | Oslo, Norway | 1 | 1 | 0 | 2018-01-21 |
| Jan Nyberg | Vestland, Norway | 1 | 1 | 0 | 2012-01-29 |
| Oddrun Vold | Trøndelag, Norway | 1 | 1 | 0 | 2014-01-28 |
| Marthe Westskog | Akershus, Norway | 1 | 1 | 0 | 2013-05-11 |
| Roar Per Dahl | Nordland, Norway | 1 | 1 | 0 | 2016-01-29 |
| Knud Lunde | Rogaland, Norway | 1 | 1 | 0 | 2017-01-22 |
| Stein A strømme | Vestland, Norway | 1 | 1 | 0 | 2016-01-23 |
| Airin Helene Zimmer | Vestland, Norway | 1 | 1 | 0 | 2016-02-01 |
| Kjell Bjørn E. Særvoll | Vestland, Norway | 1 | 1 | 0 | 2016-01-31 |
| Øystein Håvarstein | Rogaland, Norway | 1 | 1 | 0 | 2024-01-20 |
| terje gjerde | Rogaland, Norway | 1 | 1 | 0 | 2016-01-31 |
| Jan Höper | Troms, Norway | 1 | 1 | 0 | 2013-01-26 |
| Lillian Skjevikdal | Trøndelag, Norway | 1 | 1 | 0 | 2013-01-26 |
| Per Otto Røiseng | Trøndelag, Norway | 1 | 1 | 0 | 2014-01-24 |
| Jorunn Knudsen Jonassen | Rogaland, Norway | 1 | 1 | 0 | 2013-04-21 |
| Øystein Erland | Vestland, Norway | 1 | 1 | 0 | 2013-04-15 |
| Per Sveinung Lønning | Vestland, Norway | 1 | 1 | 0 | 2014-01-22 |
| Kurt Erland | Vestland, Norway | 1 | 1 | 0 | 2015-05-25 |
| Tore Hemstad | Møre og Romsdal, Norway | 1 | 1 | 0 | 2018-01-28 |
| randi guldbrandsen | Finnmark, Norway | 1 | 1 | 0 | 2014-01-26 |
| Tor Tivander Hansen | Akershus, Norway | 1 | 1 | 0 | 2014-01-19 |