Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2017 | Graaf Visart (Brugge) | 11 March | Graaf Visart (Brugge) | 4 May | |||||
| 2016 | Graaf Visart (Brugge) | 19 April | Graaf Visart (Brugge) | 19 April | |||||
| 2015 | Graaf Visart (Brugge) | 8 March | Graaf Visart (Brugge) | 1 April | |||||
| 2013 | Graaf Visart (Brugge) | 26 September | Graaf Visart (Brugge) | 26 September | |||||
| 2010 | Graaf Visart (Brugge) | 7 October | Graaf Visart (Brugge) | 18 December |
