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| Rapportør: | Lars Gustavsen |
| Observatører: | Lars Gustavsen |
| Site: | Grøttinglia. () |
| Date: | 2018-05-21 |
| Aktivitet: | Spring phenology |
Funn
| Art: | Common Swift (Apus apus) | |
| Phenophase: | Arrival | 21.05.2018 |
| Art: | Common Swift (Apus apus) | |
| Phenophase: | Birds are singing | 21.05.2018 |