Localities: Steinsvika, Tyrifjorden: 10.05.2006
| Reporter: | Norsk Ornitologisk Forening |
| Observers: | Magne Myklebust |
| Site: | Steinsvika, Tyrifjorden () |
| Date: | 2006-05-10 |
| Registered: | 2006-05-15 |
| Activity: | Spring phenology |
Observation
| Species: | Common Tern (Sterna hirundo) | |
| Phenophase: | Arrival | 10.05.2006 |