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| Rapportør: | Arne Geir Trædal |
| Observatører: | Arne Geir Trædal |
| Site: | Breivik () |
| Date: | 2020-05-11 |
| Aktivitet: | Spring phenology |
Funn
| Art: | Common Tern (Sterna hirundo) | |
| Phenophase: | Arrival | 30.04.2020 |
| Art: | Common Tern (Sterna hirundo) | |
| Phenophase: | Birds are singing | 30.04.2020 |