Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 8 February | Graaf Visart (Brugge) | 3 November | |||||
| 2020 | Graaf Visart (Brugge) | 23 April | Graaf Visart (Brugge) | 14 October | |||||
| 2019 | Graaf Visart (Brugge) | 5 October | Graaf Visart (Brugge) | 29 October | |||||
| 2018 | Graaf Visart (Brugge) | 25 March | Graaf Visart (Brugge) | 6 November | |||||
| 2017 | Graaf Visart (Brugge) | 19 October | Graaf Visart (Brugge) | 28 October | |||||
| 2016 | Graaf Visart (Brugge) | 12 March | Graaf Visart (Brugge) | 3 November | |||||
| 2015 | Graaf Visart (Brugge) | 2 March | Graaf Visart (Brugge) | 5 October | |||||
| 2014 | Graaf Visart (Brugge) | 3 October | Graaf Visart (Brugge) | 12 November | |||||
| 2013 | Graaf Visart (Brugge) | 16 January | Graaf Visart (Brugge) | 11 November | |||||
| 2012 | Graaf Visart (Brugge) | 29 February | Graaf Visart (Brugge) | 27 October | |||||
| 2011 | Graaf Visart (Brugge) | 8 March | Graaf Visart (Brugge) | 5 November | |||||
| 2010 | Graaf Visart (Brugge) | 8 January | Graaf Visart (Brugge) | 20 December | |||||
| 2009 | Graaf Visart (Brugge) | 26 February | Graaf Visart (Brugge) | 8 November | |||||
| 2008 | Graaf Visart (Brugge) | 10 September | Graaf Visart (Brugge) | 3 November | |||||
| 2007 | Graaf Visart (Brugge) | 30 September | Graaf Visart (Brugge) | 30 October | |||||
| 2006 | Graaf Visart (Brugge) | 30 October | Graaf Visart (Brugge) | 17 November |
