Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Graaf Visart (Brugge) | 31 march | Graaf Visart (Brugge) | 1 may | |||||
| 2018 | Graaf Visart (Brugge) | 22 may | Graaf Visart (Brugge) | 4 november | |||||
| 2017 | Graaf Visart (Brugge) | 12 march | Graaf Visart (Brugge) | 14 october | |||||
| 2016 | Graaf Visart (Brugge) | 13 march | Graaf Visart (Brugge) | 16 october | |||||
| 2015 | Graaf Visart (Brugge) | 20 september | Graaf Visart (Brugge) | 3 october | |||||
| 2014 | Graaf Visart (Brugge) | 9 october | Graaf Visart (Brugge) | 13 november | |||||
| 2013 | Graaf Visart (Brugge) | 19 january | Graaf Visart (Brugge) | 5 november | |||||
| 2012 | Graaf Visart (Brugge) | 5 february | Graaf Visart (Brugge) | 5 november | |||||
| 2011 | Graaf Visart (Brugge) | 7 march | Graaf Visart (Brugge) | 22 october | |||||
| 2010 | Graaf Visart (Brugge) | 20 september | Graaf Visart (Brugge) | 25 december | |||||
| 2009 | Graaf Visart (Brugge) | 6 september | Graaf Visart (Brugge) | 10 november | |||||
| 2008 | Graaf Visart (Brugge) | 27 february | Graaf Visart (Brugge) | 17 october | |||||
| 2007 | Graaf Visart (Brugge) | 3 november | Graaf Visart (Brugge) | 3 november |
