Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 20 April | Graaf Visart (Brugge) | 7 May | |||||
| 2020 | Graaf Visart (Brugge) | 30 March | Graaf Visart (Brugge) | 4 November | |||||
| 2019 | Graaf Visart (Brugge) | 16 April | Graaf Visart (Brugge) | 17 November | |||||
| 2018 | Graaf Visart (Brugge) | 22 May | Graaf Visart (Brugge) | 17 November | |||||
| 2017 | Graaf Visart (Brugge) | 17 September | Graaf Visart (Brugge) | 12 December | |||||
| 2016 | Graaf Visart (Brugge) | 19 September | Graaf Visart (Brugge) | 4 October | |||||
| 2015 | Graaf Visart (Brugge) | 18 February | Graaf Visart (Brugge) | 19 September | |||||
| 2014 | Graaf Visart (Brugge) | 25 February | Graaf Visart (Brugge) | 11 November | |||||
| 2013 | Graaf Visart (Brugge) | 22 January | Graaf Visart (Brugge) | 13 November | |||||
| 2012 | Graaf Visart (Brugge) | 6 February | Graaf Visart (Brugge) | 6 November | |||||
| 2011 | Graaf Visart (Brugge) | 11 March | Graaf Visart (Brugge) | 28 October | |||||
| 2010 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 25 December | |||||
| 2009 | Graaf Visart (Brugge) | 18 September | Graaf Visart (Brugge) | 2 October | |||||
| 2008 | Graaf Visart (Brugge) | 22 April | Graaf Visart (Brugge) | 2 November | |||||
| 2007 | Graaf Visart (Brugge) | 30 September | Graaf Visart (Brugge) | 30 September |
