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| Species | Phenological stage | 2021 | 2023 |
|---|---|---|---|
| Chaffinch | Arrival | 18.04 | |
| Chaffinch | Birds are singing | 18.04 | |
| Song Thrush | Arrival | 28.04 |
| Species | Phenological stage | 2021 | 2023 |
|---|---|---|---|
| Chaffinch | Arrival | 18.04 | |
| Chaffinch | Birds are singing | 18.04 | |
| Song Thrush | Arrival | 28.04 |