Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 9 February | Graaf Visart (Brugge) | 20 April | |||||
| 2020 | Graaf Visart (Brugge) | 30 March | Graaf Visart (Brugge) | 14 October | |||||
| 2019 | Graaf Visart (Brugge) | 5 October | Graaf Visart (Brugge) | 5 October | |||||
| 2018 | Graaf Visart (Brugge) | 29 March | Graaf Visart (Brugge) | 29 March | |||||
| 2013 | Graaf Visart (Brugge) | 15 January | Graaf Visart (Brugge) | 16 January | |||||
| 2012 | Graaf Visart (Brugge) | 31 January | Graaf Visart (Brugge) | 3 February | |||||
| 2011 | Graaf Visart (Brugge) | 20 March | Graaf Visart (Brugge) | 16 October | |||||
| 2010 | Graaf Visart (Brugge) | 26 February | Graaf Visart (Brugge) | 26 March | |||||
| 2009 | Graaf Visart (Brugge) | 3 March | Graaf Visart (Brugge) | 3 March | |||||
| 2008 | Graaf Visart (Brugge) | 23 March | Graaf Visart (Brugge) | 13 September |
