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