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| Rapportør: | Odd Magne Berge Iversen |
| Observatører: | Odd Magne Berge Iversen |
| Site: | Vervik () |
| Date: | 2020-05-17 |
| Aktivitet: | Spring phenology |
Funn
| Art: | Common Cuckoo (Cuculus canorus) | |
| Phenophase: | Arrival | 15.05.2020 |
| Art: | Common Cuckoo (Cuculus canorus) | |
| Phenophase: | Birds are singing | 15.05.2020 |