Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 13 February | Graaf Visart (Brugge) | 27 April | |||||
| 2020 | Graaf Visart (Brugge) | 17 March | Graaf Visart (Brugge) | 8 November | |||||
| 2019 | Graaf Visart (Brugge) | 5 April | Graaf Visart (Brugge) | 30 October | |||||
| 2018 | Graaf Visart (Brugge) | 9 March | Graaf Visart (Brugge) | 17 November | |||||
| 2017 | Graaf Visart (Brugge) | 29 March | Graaf Visart (Brugge) | 1 December | |||||
| 2016 | Graaf Visart (Brugge) | 6 October | Graaf Visart (Brugge) | 3 November | |||||
| 2015 | Graaf Visart (Brugge) | 23 March | Graaf Visart (Brugge) | 1 October | |||||
| 2014 | Graaf Visart (Brugge) | 5 October | Graaf Visart (Brugge) | 12 November | |||||
| 2013 | Graaf Visart (Brugge) | 6 March | Graaf Visart (Brugge) | 15 November | |||||
| 2012 | Graaf Visart (Brugge) | 3 February | Graaf Visart (Brugge) | 21 October | |||||
| 2011 | Graaf Visart (Brugge) | 2 May | Graaf Visart (Brugge) | 5 November | |||||
| 2010 | Graaf Visart (Brugge) | 17 March | Graaf Visart (Brugge) | 1 December | |||||
| 2009 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 28 October | |||||
| 2008 | Graaf Visart (Brugge) | 13 September | Graaf Visart (Brugge) | 16 September | |||||
| 2007 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 9 October |
