Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Terschelling, Paal 18 | 28 September | Terschelling, Paal 18 | 20 December | |||||
| 2019 | Terschelling, Paal 18 | 26 January | Terschelling, Paal 18 | 15 November | |||||
| 2018 | Terschelling, Paal 18 | 21 January | Terschelling, Paal 18 | 16 September | |||||
| 2017 | Terschelling, Paal 18 | 28 October | Terschelling, Paal 18 | 28 October | |||||
| 2014 | Terschelling, Paal 18 | 25 September | Terschelling, Paal 18 | 25 September | |||||
| 2013 | Terschelling, Paal 18 | 20 August | Terschelling, Paal 18 | 20 August | |||||
| 2012 | Terschelling, Paal 18 | 18 August | Terschelling, Paal 18 | 19 September | |||||
| 2011 | Terschelling, Paal 18 | 27 August | Terschelling, Paal 18 | 11 October | |||||
| 2010 | Terschelling, Paal 18 | 29 August | Terschelling, Paal 18 | 29 August | |||||
| 2009 | Terschelling, Paal 18 | 4 October | Terschelling, Paal 18 | 4 October | |||||
| 2007 | Terschelling, Paal 18 | 24 August | Terschelling, Paal 18 | 3 September | |||||
| 2006 | Terschelling, Paal 18 | 23 August | Terschelling, Paal 18 | 23 August | |||||
| 2003 | Terschelling, Paal 18 | 31 August | Terschelling, Paal 18 | 8 October | |||||
| 2002 | Terschelling, Paal 18 | 22 November | Terschelling, Paal 18 | 22 November | |||||
| 1998 | Terschelling, Paal 18 | 17 August | Terschelling, Paal 18 | 17 August | |||||
| 1992 | Terschelling, Paal 18 | 21 January | Terschelling, Paal 18 | 23 January | |||||
| 1990 | Terschelling, Paal 18 | 14 September | Terschelling, Paal 18 | 14 September | |||||
| 1989 | Terschelling, Paal 18 | 25 November | Terschelling, Paal 18 | 25 November | |||||
| 1988 | Terschelling, Paal 18 | 27 August | Terschelling, Paal 18 | 1 September | |||||
| 1986 | Terschelling, Paal 18 | 9 August | Terschelling, Paal 18 | 9 August | |||||
| 1985 | Terschelling, Paal 18 | 9 August | Terschelling, Paal 18 | 29 October | |||||
| 1984 | Terschelling, Paal 18 | 15 August | Terschelling, Paal 18 | 15 August | |||||
| 1983 | Terschelling, Paal 18 | 22 September | Terschelling, Paal 18 | 13 October | |||||
| 1982 | Terschelling, Paal 18 | 2 January | Terschelling, Paal 18 | 2 January | |||||
| 1981 | Terschelling, Paal 18 | 2 August | Terschelling, Paal 18 | 2 August | |||||
| 1980 | Terschelling, Paal 18 | 24 July | Terschelling, Paal 18 | 20 October | |||||
| 1979 | Terschelling, Paal 18 | 9 August | Terschelling, Paal 18 | 14 August | |||||
| 1978 | Terschelling, Paal 18 | 6 August | Terschelling, Paal 18 | 14 October | |||||
| 1977 | Terschelling, Paal 18 | 4 August | Terschelling, Paal 18 | 8 August | |||||
| 1975 | Terschelling, Paal 18 | 5 September | Terschelling, Paal 18 | 5 September | |||||
| 1973 | Terschelling, Paal 18 | 27 July | Terschelling, Paal 18 | 27 July | |||||
| 1972 | Terschelling, Paal 18 | 27 July | Terschelling, Paal 18 | 8 August |
