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| Reporter: | Erik Grette |
| Observers: | Erik Grette |
| Site: | Rollag Boligfelt () |
| Date: | 2025-05-21 |
| Aktivitet: | Spring phenology |
Funn
| Species: | House Martin (Delichon urbicum) | |
| Phenophase: | Arrival | 20.05.2025 |
| Reporter: | Erik Grette |
| Observers: | Erik Grette |
| Site: | Rollag Boligfelt () |
| Date: | 2025-05-21 |
| Aktivitet: | Spring phenology |
| Species: | House Martin (Delichon urbicum) | |
| Phenophase: | Arrival | 20.05.2025 |