Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 9 October | |||||
| 2019 | Graaf Visart (Brugge) | 1 April | Graaf Visart (Brugge) | 6 April | |||||
| 2015 | Graaf Visart (Brugge) | 12 August | Graaf Visart (Brugge) | 12 August | |||||
| 2014 | Graaf Visart (Brugge) | 21 April | Graaf Visart (Brugge) | 19 October | |||||
| 2013 | Graaf Visart (Brugge) | 24 March | Graaf Visart (Brugge) | 19 July | |||||
| 2011 | Graaf Visart (Brugge) | 10 April | Graaf Visart (Brugge) | 10 April | |||||
| 2010 | Graaf Visart (Brugge) | 15 April | Graaf Visart (Brugge) | 1 December | |||||
| 2008 | Graaf Visart (Brugge) | 5 May | Graaf Visart (Brugge) | 5 May |
