Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2018 | Graaf Visart (Brugge) | 1 may | Graaf Visart (Brugge) | 22 october | |||||
| 2017 | Graaf Visart (Brugge) | 1 may | Graaf Visart (Brugge) | 1 december | |||||
| 2016 | Graaf Visart (Brugge) | 18 september | Graaf Visart (Brugge) | 31 october | |||||
| 2015 | Graaf Visart (Brugge) | 23 august | Graaf Visart (Brugge) | 23 august | |||||
| 2014 | Graaf Visart (Brugge) | 19 february | Graaf Visart (Brugge) | 12 november | |||||
| 2013 | Graaf Visart (Brugge) | 25 april | Graaf Visart (Brugge) | 2 october | |||||
| 2012 | Graaf Visart (Brugge) | 13 september | Graaf Visart (Brugge) | 13 september | |||||
| 2011 | Graaf Visart (Brugge) | 2 november | Graaf Visart (Brugge) | 2 november | |||||
| 2010 | Graaf Visart (Brugge) | 21 may | Graaf Visart (Brugge) | 12 october | |||||
| 2009 | Graaf Visart (Brugge) | 7 april | Graaf Visart (Brugge) | 3 november | |||||
| 2008 | Graaf Visart (Brugge) | 17 april | Graaf Visart (Brugge) | 11 october | |||||
| 2007 | Graaf Visart (Brugge) | 21 april | Graaf Visart (Brugge) | 1 may | |||||
| 2006 | Graaf Visart (Brugge) | 3 november | Graaf Visart (Brugge) | 3 november |
