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| Reporter: | Erik Langseth |
| Observers: | Erik Langseth |
| Site: | Helgøyvegen 1040 () |
| Date: | 2023-05-03 |
| Aktivitet: | Spring phenology |
Funn
| Species: | Barn Swallow (Hirundo rustica) | |
| Phenophase: | Arrival | 03.05.2023 |
| Species: | Barn Swallow (Hirundo rustica) | |
| Phenophase: | Birds are singing | 03.05.2023 |
| Species: | Barn Swallow (Hirundo rustica) | |
| Phenophase: | Nest building | 03.05.2023 |
| Species: | House Martin (Delichon urbicum) | |
| Phenophase: | Arrival | 03.05.2023 |
| Species: | House Martin (Delichon urbicum) | |
| Phenophase: | Birds are singing | 03.05.2023 |
| Species: | House Martin (Delichon urbicum) | |
| Phenophase: | Nest building | 03.05.2023 |