Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 8 February | Graaf Visart (Brugge) | 10 February | |||||
| 2018 | Graaf Visart (Brugge) | 11 March | Graaf Visart (Brugge) | 11 March | |||||
| 2017 | Graaf Visart (Brugge) | 14 October | Graaf Visart (Brugge) | 16 October | |||||
| 2015 | Graaf Visart (Brugge) | 8 October | Graaf Visart (Brugge) | 8 October | |||||
| 2014 | Graaf Visart (Brugge) | 24 February | Graaf Visart (Brugge) | 30 March | |||||
| 2013 | Graaf Visart (Brugge) | 15 February | Graaf Visart (Brugge) | 11 November | |||||
| 2012 | Graaf Visart (Brugge) | 18 March | Graaf Visart (Brugge) | 11 November | |||||
| 2011 | Graaf Visart (Brugge) | 2 January | Graaf Visart (Brugge) | 2 October | |||||
| 2010 | Graaf Visart (Brugge) | 3 February | Graaf Visart (Brugge) | 25 December | |||||
| 2009 | Graaf Visart (Brugge) | 15 October | Graaf Visart (Brugge) | 18 October | |||||
| 2008 | Graaf Visart (Brugge) | 16 September | Graaf Visart (Brugge) | 8 November | |||||
| 2007 | Graaf Visart (Brugge) | 6 November | Graaf Visart (Brugge) | 6 November | |||||
| 2006 | Graaf Visart (Brugge) | 30 October | Graaf Visart (Brugge) | 30 October |
