Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 21 February | Graaf Visart (Brugge) | 21 February | |||||
| 2020 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 9 November | |||||
| 2019 | Graaf Visart (Brugge) | 10 October | Graaf Visart (Brugge) | 29 October | |||||
| 2018 | Graaf Visart (Brugge) | 25 September | Graaf Visart (Brugge) | 2 November | |||||
| 2017 | Graaf Visart (Brugge) | 23 September | Graaf Visart (Brugge) | 31 October | |||||
| 2016 | Graaf Visart (Brugge) | 4 October | Graaf Visart (Brugge) | 31 October | |||||
| 2015 | Graaf Visart (Brugge) | 11 March | Graaf Visart (Brugge) | 9 October | |||||
| 2014 | Graaf Visart (Brugge) | 10 October | Graaf Visart (Brugge) | 8 November | |||||
| 2013 | Graaf Visart (Brugge) | 17 March | Graaf Visart (Brugge) | 11 November | |||||
| 2012 | Graaf Visart (Brugge) | 27 September | Graaf Visart (Brugge) | 6 November | |||||
| 2011 | Graaf Visart (Brugge) | 19 March | Graaf Visart (Brugge) | 12 November | |||||
| 2010 | Graaf Visart (Brugge) | 1 March | Graaf Visart (Brugge) | 18 December | |||||
| 2009 | Graaf Visart (Brugge) | 8 October | Graaf Visart (Brugge) | 9 November | |||||
| 2008 | Graaf Visart (Brugge) | 8 October | Graaf Visart (Brugge) | 2 November | |||||
| 2007 | Graaf Visart (Brugge) | 21 October | Graaf Visart (Brugge) | 22 October |
