Species: Herring Gull (Larus argentatus)
| Site | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. | |
|---|
| Østenstad | Akershus, Norway | 3 | 1 | 0 | 2024-01-28 | |
| Østre Berg | Trøndelag, Norway | 1 | 1 | 0 | 2020-01-25 | |
| Østre Berg | Trøndelag, Norway | 6 | 1 | 0 | 2022-01-30 | |
| Østre Nesveien 8 | Vestfold, Norway | 2 | 1 | 0 | 2021-01-30 | |
| Østre Stiaberget 45a | Vestland, Norway | 1 | 1 | 0 | 2020-01-26 | |
| Østre Tromøyvei 746 | Agder, Norway | 1 | 1 | 0 | 2023-01-28 | |
| Østveien 438 | Vestfold, Norway | 2 | 1 | 0 | 2024-01-28 | |
| Øverlandsvegen 5 | Møre og Romsdal, Norway | 1 | 1 | 0 | 2016-01-31 | |
| Øvre Amla | Vestland, Norway | 1 | 1 | 0 | 2024-01-29 | |
| øvre bragernes | Buskerud, Norway | 1 | 1 | 0 | 2019-01-27 | |
| Øvre Dr Holms vei 70 | Vestfold, Norway | 2 | 1 | 0 | 2022-01-31 | |
| Øvre Fuglset, Molde | Møre og Romsdal, Norway | 1 | 1 | 0 | 2015-01-25 | |
| Øvre Godvik | Vestland, Norway | 1 | 1 | 0 | 2016-01-31 | |
| Øvre Hasle | Vestfold, Norway | 2 | 1 | 0 | 2019-01-27 | |
| Øvre Keisemark 93 | Vestfold, Norway | 6 | 1 | 0 | 2023-01-28 | |
| Øvre Smidsrødvei | Vestfold, Norway | 4 | 1 | 0 | 2023-01-28 | |
| Øvre Solstad | Vestfold, Norway | 2 | 1 | 0 | 2023-01-30 | |
| Øvre Storfjordvatnet | Nordland, Norway | 1 | 1 | 0 | 1994-10-11 | |
| Øvre Utsiktsvei 37B | Akershus, Norway | 1 | 1 | 0 | 2021-01-31 | |
| Øvretveit | Vestland, Norway | 1 | 1 | 0 | 2023-02-04 | |
| Øvrevoll / Jar | Akershus, Norway | 4 | 1 | 0 | 2022-01-29 | |
| Øvsttunbrekka 1 | Vestland, Norway | 1 | 1 | 0 | 2021-01-31 | |
| Øya | Trøndelag, Norway | 4 | 1 | 0 | 2020-01-25 | |
| Øyagrenda | Trøndelag, Norway | 2 | 1 | 0 | 2020-01-28 | |
| Øyekast | Telemark, Norway | 1 | 1 | 0 | 2016-01-31 | |
| Øyerhamn | Vestland, Norway | 1 | 1 | 0 | 2023-01-27 | |
| Øyrane | Vestland, Norway | 2 | 1 | 0 | 2013-04-21 | |
| Øysand | Trøndelag, Norway | 3 | 1 | 0 | 2004-06-09 | |
| Øystese | Vestland, Norway | 9 | 1 | 0 | 2024-01-28 | |
| Øystesefjøro | Vestland, Norway | 1 | 1 | 0 | 2020-01-28 | |
| Åfoss | Telemark, Norway | 1 | 1 | 0 | 2024-01-28 | |
| Åkragata 74, Stavanger | Rogaland, Norway | 1 | 1 | 0 | 2022-01-28 | |
| åkraøynå,øystrand | Rogaland, Norway | 1 | 1 | 0 | 2022-01-30 | |
| Ålgård (hammeren) | Rogaland, Norway | 1 | 1 | 0 | 2018-01-27 | |
| Åmot | Buskerud, Norway | 1 | 1 | 0 | 2018-01-28 | |
| Årdalstangen | Vestland, Norway | 1 | 1 | 0 | 2019-02-02 | |
| århuskleiva | Agder, Norway | 1 | 1 | 0 | 2014-02-02 | |
| Årøråket 6 | Møre og Romsdal, Norway | 1 | 1 | 0 | 2022-02-05 | |
| Åråsvågen 223 | Vestland, Norway | 3 | 1 | 0 | 2023-02-04 | |
| Åsane | Vestland, Norway | 2 | 1 | 0 | 2024-01-28 | |
| Åsbygata 13 | Rogaland, Norway | 2 | 1 | 0 | 2022-01-29 | |
| Åsenvegen 2 | Vestland, Norway | 1 | 1 | 0 | 2022-01-30 | |
| Åsfaret 8, 1362 Hosle | Akershus, Norway | 1 | 1 | 0 | 2020-01-25 | |
| åsgårdstrand | Vestfold, Norway | 2 | 1 | 0 | 2021-01-27 | |
| Åsgårdstrand | Vestfold, Norway | 2 | 1 | 0 | 2017-01-29 | |
| Åsgårdstrand | Vestfold, Norway | 1 | 1 | 0 | 2017-01-29 | |
| Åsgårdstrand | Vestfold, Norway | 4 | 1 | 0 | 2022-02-01 | |
| Åsveien | Østfold, Norway | 6 | 1 | 0 | 2023-01-28 | |
| Åsveien 25 | Agder, Norway | 1 | 1 | 0 | 2021-01-31 | |
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