Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Graaf Visart (Brugge) | 4 September | Graaf Visart (Brugge) | 4 September | |||||
| 2019 | Graaf Visart (Brugge) | 19 April | Graaf Visart (Brugge) | 20 September | |||||
| 2015 | Graaf Visart (Brugge) | 19 September | Graaf Visart (Brugge) | 19 September |
