Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Graaf Visart (Brugge) | 25 April | Graaf Visart (Brugge) | 25 April | |||||
| 2019 | Graaf Visart (Brugge) | 29 March | Graaf Visart (Brugge) | 19 April | |||||
| 2018 | Graaf Visart (Brugge) | 4 April | Graaf Visart (Brugge) | 19 October | |||||
| 2017 | Graaf Visart (Brugge) | 9 May | Graaf Visart (Brugge) | 19 November | |||||
| 2015 | Graaf Visart (Brugge) | 7 May | Graaf Visart (Brugge) | 7 May | |||||
| 2014 | Graaf Visart (Brugge) | 11 November | Graaf Visart (Brugge) | 11 November | |||||
| 2011 | Graaf Visart (Brugge) | 8 March | Graaf Visart (Brugge) | 13 October | |||||
| 2010 | Graaf Visart (Brugge) | 25 February | Graaf Visart (Brugge) | 1 December |
