Betula (Birch)
| Participant | Municipality (county) | Num. obs. | Num. species | Num. images | Last obs. |
|---|---|---|---|---|---|
| Hesnes Montessoriskole | Agder, Norway | 6 | 2 | 0 | 2010-11-02 |
| Trintom skole | Innlandet, Norway | 6 | 1 | 0 | 2001-05-25 |
| Madsebakken skole | Buskerud, Norway | 5 | 1 | 8 | 2015-10-12 |
| Søre Fusa Oppvekstsenter/Avdeling skule | Vestland, Norway | 5 | 1 | 0 | 2013-05-19 |
| Hvam videregående skole | Akershus, Norway | 5 | 1 | 0 | 2015-01-29 |
| Skatval skole | Trøndelag, Norway | 5 | 1 | 0 | 2022-09-09 |
| Endre Bleie | Møre og Romsdal, Norway | 5 | 1 | 0 | 2012-03-27 |
| Per Torgersen | Akershus, Norway | 5 | 1 | 0 | 2024-05-07 |
| Karlsvika Alternative skole | Vestfold, Norway | 5 | 1 | 0 | 2005-04-29 |
| AstriEggen | Vestfold, Norway | 5 | 1 | 0 | 2010-04-29 |
| Stasjonsfjellet skole | Oslo, Norway | 5 | 1 | 0 | 2019-04-09 |
| Marianne Iversen | Finnmark, Norway | 5 | 1 | 0 | 2005-01-07 |
| Torunn Hansen | Nordland, Norway | 5 | 2 | 0 | 2011-04-26 |
| Samnanger ungdomsskule | Vestland, Norway | 5 | 2 | 5 | 2019-09-17 |
| Otterøy skole | Trøndelag, Norway | 5 | 1 | 1 | 2022-09-23 |
| Universitetet i Oslo | Oslo, Norway | 5 | 1 | 0 | 2022-04-22 |
| Berge ungdomsskole | Agder, Norway | 5 | 1 | 0 | 2008-06-26 |
| Hemsedal barne- og ungdomsskule | Buskerud, Norway | 5 | 1 | 0 | 2022-08-25 |
| Linesøy skole | Trøndelag, Norway | 5 | 1 | 0 | 2006-04-24 |
| Pollen skule | Vestland, Norway | 5 | 1 | 4 | 2010-06-30 |
| Gol skule | Buskerud, Norway | 5 | 1 | 0 | 2010-05-20 |
| Eikeli videregående skole | Akershus, Norway | 5 | 2 | 0 | 2014-08-27 |
| Jordet skole | Innlandet, Norway | 5 | 1 | 0 | 2007-06-13 |
| Blussuvoll skole | Trøndelag, Norway | 5 | 2 | 1 | 2013-06-07 |
| Sunnylven skule | Møre og Romsdal, Norway | 5 | 1 | 0 | 2022-09-05 |
| Skjold skule | Rogaland, Norway | 5 | 1 | 0 | 2020-04-02 |
| Tertnes videregående skole | Vestland, Norway | 5 | 1 | 4 | 2015-08-31 |
| Høyjord skole | Vestfold, Norway | 5 | 1 | 0 | 2004-05-10 |
| Kyrkjekrinsen skole | Vestland, Norway | 5 | 2 | 1 | 2022-09-12 |
| Steigenskolen Leines | Nordland, Norway | 4 | 1 | 0 | 2009-04-23 |
| Per Ole Lunden | Innlandet, Norway | 4 | 1 | 0 | 2021-05-10 |
| Olaf Hunsdal | Troms, Norway | 4 | 1 | 0 | 2010-05-16 |
| Kristian Roaldstveit | Akershus, Norway | 4 | 1 | 0 | 2017-05-05 |
| Bjørn Magne Brattebø | Rogaland, Norway | 4 | 1 | 0 | 2019-04-22 |
| Heikki Fjelldal | Akershus, Norway | 4 | 1 | 0 | 2024-05-01 |
| Elly Hardy Bakstad | Vestfold, Norway | 4 | 1 | 0 | 2012-03-29 |
| Brekke skule | Vestland, Norway | 4 | 1 | 0 | 2008-05-08 |
| Lunde skole | Agder, Norway | 4 | 1 | 2 | 2010-05-04 |
| Saksvik skole | Trøndelag, Norway | 4 | 1 | 0 | 2020-03-31 |
| Mardon Hjelle | Møre og Romsdal, Norway | 4 | 2 | 0 | 2008-10-09 |
| Stinta skole barne- og Ungdomstrinnet | Agder, Norway | 4 | 1 | 0 | 2022-09-26 |
| Jan Askland | Agder, Norway | 4 | 1 | 0 | 2020-04-15 |
| Stokke ungdomsskole | Vestfold, Norway | 4 | 1 | 0 | 2002-10-22 |
| John Skjelseth | Innlandet, Norway | 4 | 1 | 0 | 2013-05-18 |
| Kjølberg skole | Østfold, Norway | 4 | 1 | 3 | 2018-05-04 |
| Trengereid skule | Vestland, Norway | 4 | 1 | 0 | 2005-04-20 |
| Risøyhamn skole | Nordland, Norway | 4 | 1 | 0 | 2007-04-27 |
| Sandvollan skole | Trøndelag, Norway | 4 | 1 | 2 | 2010-05-21 |
| Bugøynes Oppvekstsenter/Avdeling skole | Finnmark, Norway | 4 | 1 | 0 | 2004-06-30 |
| Stiftelsen Soon Sjøskole | Akershus, Norway | 4 | 1 | 5 | 2022-10-17 |