Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 7 February | Graaf Visart (Brugge) | 11 November | |||||
| 2020 | Graaf Visart (Brugge) | 22 March | Graaf Visart (Brugge) | 5 November | |||||
| 2019 | Graaf Visart (Brugge) | 23 January | Graaf Visart (Brugge) | 27 October | |||||
| 2018 | Graaf Visart (Brugge) | 26 March | Graaf Visart (Brugge) | 23 November | |||||
| 2014 | Graaf Visart (Brugge) | 12 October | Graaf Visart (Brugge) | 10 November | |||||
| 2013 | Graaf Visart (Brugge) | 17 January | Graaf Visart (Brugge) | 11 November | |||||
| 2012 | Graaf Visart (Brugge) | 6 February | Graaf Visart (Brugge) | 28 November | |||||
| 2011 | Graaf Visart (Brugge) | 2 January | Graaf Visart (Brugge) | 23 October | |||||
| 2010 | Graaf Visart (Brugge) | 7 January | Graaf Visart (Brugge) | 28 December | |||||
| 2009 | Graaf Visart (Brugge) | 24 February | Graaf Visart (Brugge) | 6 November | |||||
| 2008 | Graaf Visart (Brugge) | 18 April | Graaf Visart (Brugge) | 30 October | |||||
| 2007 | Graaf Visart (Brugge) | 8 October | Graaf Visart (Brugge) | 6 November | |||||
| 2006 | Graaf Visart (Brugge) | 4 November | Graaf Visart (Brugge) | 4 November |
