Genus: Chroicocephalus
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|---|---|---|---|---|---|
| Russeluft | Finnmark, Norway | 1 | 1 | 0 | 2014-04-28 | |
| Rønnes | Agder, Norway | 1 | 1 | 0 | 2015-05-01 | |
| Røstlandet | Nordland, Norway | 2 | 1 | 0 | 2008-03-30 | |
| Røyksundvegen 28 | Rogaland, Norway | 1 | 1 | 0 | 2024-01-29 | |
| Råholt | Akershus, Norway | 1 | 1 | 0 | 2015-05-22 | |
| Saltstraumen | Nordland, Norway | 1 | 1 | 0 | 2007-04-08 | |
| Sandvin | Vestland, Norway | 6 | 1 | 0 | 2007-04-22 | |
| Seehusensgate 75 | Rogaland, Norway | 1 | 1 | 0 | 2019-01-27 | |
| Selnes | Nordland, Norway | 1 | 1 | 0 | 2016-04-20 | |
| Semsvannet | Akershus, Norway | 1 | 1 | 0 | 1994-05-18 | |
| Simadalsfjorden | Vestland, Norway | 1 | 1 | 0 | 2006-04-18 | |
| Sjostrandvn 30b | Akershus, Norway | 2 | 1 | 0 | 2017-05-01 | |
| Sjøstrand og elnastangen | Akershus, Norway | 1 | 1 | 0 | 2016-03-28 | |
| Skjønnhaug skole til Lutvann | Oslo, Norway | 1 | 1 | 0 | 2013-06-20 | |
| Skogsøy | Nordland, Norway | 1 | 1 | 0 | 2019-01-26 | |
| Skogsøy | Vestland, Norway | 2 | 1 | 0 | 2006-04-01 | |
| Skånevik | Vestland, Norway | 2 | 1 | 0 | 2007-03-26 | |
| Slettmoen | Innlandet, Norway | 1 | 1 | 0 | 2014-05-03 | |
| Solbergstrand | Akershus, Norway | 1 | 1 | 0 | 2021-01-30 | |
| Solend | Vestland, Norway | 1 | 1 | 0 | 2006-04-03 | |
| Stjørdalshalsen | Trøndelag, Norway | 1 | 1 | 0 | 2007-03-14 | |
| Stokkavatnet | Rogaland, Norway | 1 | 1 | 0 | 2001-05-07 | |
| Stokkevannet | Telemark, Norway | 1 | 1 | 0 | 1989-09-13 | |
| Stolmasundet | Vestland, Norway | 1 | 1 | 0 | 2021-05-16 | |
| Storeidvatnet | Nordland, Norway | 1 | 1 | 0 | 1998-09-07 | |
| Storeng | Troms, Norway | 1 | 1 | 0 | 2018-04-04 | |
| Strandvegen 10 | Akershus, Norway | 2 | 1 | 0 | 2017-01-23 | |
| Svalerødkilen | Østfold, Norway | 1 | 1 | 0 | 2009-04-05 | |
| Sæle | Vestland, Norway | 1 | 1 | 0 | 2006-04-01 | |
| Sætrepollen | Akershus, Norway | 1 | 1 | 0 | 2021-03-10 | |
| Søgne | Agder, Norway | 1 | 1 | 0 | 2022-06-03 | |
| Søre Osen | Innlandet, Norway | 1 | 1 | 0 | 2008-05-15 | |
| Sørstraumen | Troms, Norway | 1 | 1 | 0 | 2008-05-02 | |
| Tangenbukta, Vesterøya | Vestfold, Norway | 1 | 1 | 0 | 2011-03-23 | |
| Tautra | Trøndelag, Norway | 1 | 1 | 0 | 2008-04-20 | |
| Thyvesmorka | Trøndelag, Norway | 1 | 1 | 0 | 2007-05-15 | |
| Tiurleiken 5, Vikersund | Buskerud, Norway | 1 | 1 | 0 | 2022-01-31 | |
| Tjeldstø | Vestland, Norway | 1 | 1 | 0 | 2005-02-10 | |
| Torvastad | Rogaland, Norway | 1 | 1 | 0 | 2011-04-27 | |
| Tromsø by | Troms, Norway | 1 | 1 | 0 | 2009-04-08 | |
| Trones | Rogaland, Norway | 2 | 1 | 0 | 2018-04-18 | |
| Trysilelva | Innlandet, Norway | 1 | 1 | 0 | 2019-04-28 | |
| Tveitevannet | Vestland, Norway | 1 | 1 | 0 | 2010-09-14 | |
| Tønsnes | Troms, Norway | 1 | 1 | 0 | 2012-02-12 | |
| Tårnvik | Nordland, Norway | 1 | 1 | 0 | 2016-04-30 | |
| Undelstad | Akershus, Norway | 1 | 1 | 0 | 2016-01-27 | |
| Undredal | Vestland, Norway | 2 | 1 | 1 | 2010-05-03 | |
| Vadanesset 1 | Trøndelag, Norway | 8 | 1 | 0 | 2023-04-13 | |
| Veaholmen | Telemark, Norway | 1 | 1 | 0 | 2017-06-02 | |
| Verdalselva | Trøndelag, Norway | 1 | 1 | 0 | 2014-01-24 |
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