Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Terschelling, Paal 18 | 24 January | Terschelling, Paal 18 | 31 January | |||||
| 2020 | Terschelling, Paal 18 | 12 January | Terschelling, Paal 18 | 20 November | |||||
| 2019 | Terschelling, Paal 18 | 13 January | Terschelling, Paal 18 | 15 December | |||||
| 2018 | Terschelling, Paal 18 | 4 January | Terschelling, Paal 18 | 11 November | |||||
| 2017 | Terschelling, Paal 18 | 15 January | Terschelling, Paal 18 | 24 November | |||||
| 2016 | Terschelling, Paal 18 | 2 October | Terschelling, Paal 18 | 22 November | |||||
| 2015 | Terschelling, Paal 18 | 20 September | Terschelling, Paal 18 | 23 October | |||||
| 2014 | Terschelling, Paal 18 | 27 January | Terschelling, Paal 18 | 21 October | |||||
| 2013 | Terschelling, Paal 18 | 10 October | Terschelling, Paal 18 | 29 November | |||||
| 2012 | Terschelling, Paal 18 | 14 January | Terschelling, Paal 18 | 17 November | |||||
| 2011 | Terschelling, Paal 18 | 13 September | Terschelling, Paal 18 | 25 November | |||||
| 2010 | Terschelling, Paal 18 | 28 October | Terschelling, Paal 18 | 28 October | |||||
| 2009 | Terschelling, Paal 18 | 26 October | Terschelling, Paal 18 | 22 November | |||||
| 2008 | Terschelling, Paal 18 | 2 October | Terschelling, Paal 18 | 3 October | |||||
| 2007 | Terschelling, Paal 18 | 4 October | Terschelling, Paal 18 | 30 December | |||||
| 2006 | Terschelling, Paal 18 | 25 December | Terschelling, Paal 18 | 25 December | |||||
| 2005 | Terschelling, Paal 18 | 11 September | Terschelling, Paal 18 | 11 September | |||||
| 2004 | Terschelling, Paal 18 | 10 January | Terschelling, Paal 18 | 13 November | |||||
| 2003 | Terschelling, Paal 18 | 7 October | Terschelling, Paal 18 | 11 October | |||||
| 2002 | Terschelling, Paal 18 | 1 January | Terschelling, Paal 18 | 29 October | |||||
| 2001 | Terschelling, Paal 18 | 5 October | Terschelling, Paal 18 | 5 October | |||||
| 2000 | Terschelling, Paal 18 | 3 October | Terschelling, Paal 18 | 3 October | |||||
| 1999 | Terschelling, Paal 18 | 5 October | Terschelling, Paal 18 | 5 October | |||||
| 1997 | Terschelling, Paal 18 | 8 October | Terschelling, Paal 18 | 18 October | |||||
| 1996 | Terschelling, Paal 18 | 5 October | Terschelling, Paal 18 | 5 October | |||||
| 1995 | Terschelling, Paal 18 | 28 October | Terschelling, Paal 18 | 28 October | |||||
| 1989 | Terschelling, Paal 18 | 18 February | Terschelling, Paal 18 | 18 February | |||||
| 1988 | Terschelling, Paal 18 | 22 November | Terschelling, Paal 18 | 22 November | |||||
| 1987 | Terschelling, Paal 18 | 22 October | Terschelling, Paal 18 | 22 October | |||||
| 1985 | Terschelling, Paal 18 | 28 October | Terschelling, Paal 18 | 3 November | |||||
| 1984 | Terschelling, Paal 18 | 30 September | Terschelling, Paal 18 | 30 September | |||||
| 1983 | Terschelling, Paal 18 | 9 October | Terschelling, Paal 18 | 13 October | |||||
| 1979 | Terschelling, Paal 18 | 19 October | Terschelling, Paal 18 | 21 October | |||||
| 1978 | Terschelling, Paal 18 | 31 March | Terschelling, Paal 18 | 31 March | |||||
| 1976 | Terschelling, Paal 18 | 17 January | Terschelling, Paal 18 | 17 January |
