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| Rapportør: | Trond Helge Jensen |
| Observatører: | Trond Helge Jensen |
| Site: | Tønsnes () |
| Date: | 2017-05-30 |
| Aktivitet: | Spring phenology |
Funn
| Art: | Common Cuckoo (Cuculus canorus) | |
| Phenophase: | Arrival | 27.05.2017 |
| Art: | Common Cuckoo (Cuculus canorus) | |
| Phenophase: | Birds are singing | 27.05.2017 |