Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Terschelling, Paal 18 | 15 September | Terschelling, Paal 18 | 17 September | |||||
| 2018 | Terschelling, Paal 18 | 15 September | Terschelling, Paal 18 | 24 October | |||||
| 2017 | Terschelling, Paal 18 | 6 October | Terschelling, Paal 18 | 29 October | |||||
| 2015 | Terschelling, Paal 18 | 19 September | Terschelling, Paal 18 | 20 September | |||||
| 2013 | Terschelling, Paal 18 | 19 September | Terschelling, Paal 18 | 10 October | |||||
| 2012 | Terschelling, Paal 18 | 27 August | Terschelling, Paal 18 | 9 October | |||||
| 2011 | Terschelling, Paal 18 | 13 September | Terschelling, Paal 18 | 7 October | |||||
| 2010 | Terschelling, Paal 18 | 16 September | Terschelling, Paal 18 | 21 September | |||||
| 2009 | Terschelling, Paal 18 | 24 September | Terschelling, Paal 18 | 24 September | |||||
| 2008 | Terschelling, Paal 18 | 1 October | Terschelling, Paal 18 | 1 October | |||||
| 2007 | Terschelling, Paal 18 | 4 September | Terschelling, Paal 18 | 12 October | |||||
| 2006 | Terschelling, Paal 18 | 9 September | Terschelling, Paal 18 | 9 September | |||||
| 2005 | Terschelling, Paal 18 | 2 October | Terschelling, Paal 18 | 2 October | |||||
| 2004 | Terschelling, Paal 18 | 22 September | Terschelling, Paal 18 | 7 October | |||||
| 2000 | Terschelling, Paal 18 | 6 October | Terschelling, Paal 18 | 6 October | |||||
| 1999 | Terschelling, Paal 18 | 30 September | Terschelling, Paal 18 | 4 October | |||||
| 1997 | Terschelling, Paal 18 | 12 October | Terschelling, Paal 18 | 12 October | |||||
| 1991 | Terschelling, Paal 18 | 11 September | Terschelling, Paal 18 | 11 September | |||||
| 1988 | Terschelling, Paal 18 | 29 September | Terschelling, Paal 18 | 28 October | |||||
| 1987 | Terschelling, Paal 18 | 27 September | Terschelling, Paal 18 | 27 September |
