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| Reporter: | Baard C |
| Observers: | Baard C |
| Site: | Bygdøy () |
| Date: | 2009-03-23 |
| Registered: | 2009-03-27 |
| Aktivitet: | Spring phenology |
Funn
| Species: | Black-headed Gull (Chroicocephalus ridibundus) | |
| Phenophase: | Arrival | 23.03.2009 |
| Comments: | 15 + sett på Huk |