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| Species | Phenological stage | 2018 |
|---|---|---|
| Barn Swallow | Arrival | 12.05 |
| Barn Swallow | Birds are singing | 12.05 |
| Barn Swallow | Nest building | 12.05 |
| Species | Phenological stage | 2018 |
|---|---|---|
| Barn Swallow | Arrival | 12.05 |
| Barn Swallow | Birds are singing | 12.05 |
| Barn Swallow | Nest building | 12.05 |