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| Reporter: | Ole Pehrson |
| Observers: | Ole Pehrson |
| Site: | Askim () |
| Date: | 2011-03-22 |
| Registered: | 2011-03-28 |
| Aktivitet: | Fugler og fuglekasser |
Measurements
| Antal kasser: | 2 | Antal |
Funn
| Species: | Eurasian Tree Sparrow (Passer montanus) | |
| Phenophase: | Egg laying | 22.03.2011 |