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| Reporter: | bjørn kristoffersen |
| Observers: | bjørn kristoffersen |
| Site: | bybrua () |
| Date: | 2021-04-16 |
| Aktivitet: | Spring phenology |
Funn
| Species: | Robin (Erithacus rubecula) | |
| Phenophase: | Arrival | 16.04.2021 |
| Species: | Robin (Erithacus rubecula) | |
| Phenophase: | Birds are singing | 16.04.2021 |