Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Terschelling, Paal 18 | 24 September | Terschelling, Paal 18 | 15 November | |||||
| 2019 | Terschelling, Paal 18 | 19 October | Terschelling, Paal 18 | 22 October | |||||
| 2018 | Terschelling, Paal 18 | 15 September | Terschelling, Paal 18 | 5 October | |||||
| 2017 | Terschelling, Paal 18 | 12 August | Terschelling, Paal 18 | 11 November | |||||
| 2016 | Terschelling, Paal 18 | 2 October | Terschelling, Paal 18 | 3 October | |||||
| 2015 | Terschelling, Paal 18 | 20 September | Terschelling, Paal 18 | 24 September | |||||
| 2014 | Terschelling, Paal 18 | 25 September | Terschelling, Paal 18 | 27 September | |||||
| 2013 | Terschelling, Paal 18 | 21 September | Terschelling, Paal 18 | 19 October | |||||
| 2012 | Terschelling, Paal 18 | 20 August | Terschelling, Paal 18 | 5 October | |||||
| 2011 | Terschelling, Paal 18 | 31 August | Terschelling, Paal 18 | 4 October | |||||
| 2010 | Terschelling, Paal 18 | 29 August | Terschelling, Paal 18 | 17 September | |||||
| 2008 | Terschelling, Paal 18 | 30 August | Terschelling, Paal 18 | 30 August | |||||
| 2007 | Terschelling, Paal 18 | 1 September | Terschelling, Paal 18 | 1 September | |||||
| 2006 | Terschelling, Paal 18 | 9 September | Terschelling, Paal 18 | 9 September | |||||
| 2000 | Terschelling, Paal 18 | 13 October | Terschelling, Paal 18 | 13 October | |||||
| 1992 | Terschelling, Paal 18 | 14 December | Terschelling, Paal 18 | 14 December | |||||
| 1991 | Terschelling, Paal 18 | 8 September | Terschelling, Paal 18 | 8 September | |||||
| 1990 | Terschelling, Paal 18 | 13 September | Terschelling, Paal 18 | 13 September | |||||
| 1988 | Terschelling, Paal 18 | 27 August | Terschelling, Paal 18 | 1 September | |||||
| 1987 | Terschelling, Paal 18 | 27 September | Terschelling, Paal 18 | 27 September | |||||
| 1985 | Terschelling, Paal 18 | 4 July | Terschelling, Paal 18 | 11 September | |||||
| 1984 | Terschelling, Paal 18 | 30 September | Terschelling, Paal 18 | 30 September | |||||
| 1983 | Terschelling, Paal 18 | 16 August | Terschelling, Paal 18 | 12 October | |||||
| 1982 | Terschelling, Paal 18 | 30 October | Terschelling, Paal 18 | 30 October | |||||
| 1981 | Terschelling, Paal 18 | 31 July | Terschelling, Paal 18 | 9 August | |||||
| 1980 | Terschelling, Paal 18 | 24 July | Terschelling, Paal 18 | 18 September | |||||
| 1979 | Terschelling, Paal 18 | 12 August | Terschelling, Paal 18 | 26 September | |||||
| 1978 | Terschelling, Paal 18 | 14 August | Terschelling, Paal 18 | 16 October | |||||
| 1977 | Terschelling, Paal 18 | 4 August | Terschelling, Paal 18 | 3 September | |||||
| 1976 | Terschelling, Paal 18 | 6 August | Terschelling, Paal 18 | 13 August |
