Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 9 February | Graaf Visart (Brugge) | 22 November | |||||
| 2020 | Graaf Visart (Brugge) | 25 April | Graaf Visart (Brugge) | 20 November | |||||
| 2019 | Graaf Visart (Brugge) | 7 October | Graaf Visart (Brugge) | 8 November | |||||
| 2018 | Graaf Visart (Brugge) | 15 October | Graaf Visart (Brugge) | 17 November | |||||
| 2017 | Graaf Visart (Brugge) | 11 March | Graaf Visart (Brugge) | 12 December | |||||
| 2016 | Graaf Visart (Brugge) | 13 April | Graaf Visart (Brugge) | 4 October | |||||
| 2015 | Graaf Visart (Brugge) | 4 March | Graaf Visart (Brugge) | 29 September | |||||
| 2014 | Graaf Visart (Brugge) | 5 March | Graaf Visart (Brugge) | 29 December | |||||
| 2013 | Graaf Visart (Brugge) | 16 January | Graaf Visart (Brugge) | 15 November | |||||
| 2012 | Graaf Visart (Brugge) | 3 February | Graaf Visart (Brugge) | 11 December | |||||
| 2011 | Graaf Visart (Brugge) | 20 January | Graaf Visart (Brugge) | 19 December | |||||
| 2010 | Graaf Visart (Brugge) | 4 March | Graaf Visart (Brugge) | 25 December | |||||
| 2009 | Graaf Visart (Brugge) | 9 October | Graaf Visart (Brugge) | 19 November | |||||
| 2008 | Graaf Visart (Brugge) | 6 May | Graaf Visart (Brugge) | 12 November | |||||
| 2007 | Graaf Visart (Brugge) | 30 September | Graaf Visart (Brugge) | 8 November | |||||
| 2006 | Graaf Visart (Brugge) | 3 November | Graaf Visart (Brugge) | 17 November |
