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| Reporter: | Per Torgersen |
| Observers: | Per Torgersen |
| Site: | Bjørkelangen () |
| Date: | 2023-05-20 |
| Aktivitet: | Spring phenology |
Funn
| Species: | Marsh-marigold (Caltha palustris) | |
| Phenophase: | Flowering | 17.05.2023 |
| Species: | Hover flies (Syrphidae) | |
| Phenophase: | Adult | 20.05.2023 |