Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Terschelling, Paal 18 | 15 November | Terschelling, Paal 18 | 15 November | |||||
| 2019 | Terschelling, Paal 18 | 16 July | Terschelling, Paal 18 | 18 October | |||||
| 2018 | Terschelling, Paal 18 | 19 August | Terschelling, Paal 18 | 3 October | |||||
| 2017 | Terschelling, Paal 18 | 15 June | Terschelling, Paal 18 | 23 September | |||||
| 2015 | Terschelling, Paal 18 | 23 September | Terschelling, Paal 18 | 23 September | |||||
| 2014 | Terschelling, Paal 18 | 9 March | Terschelling, Paal 18 | 27 September | |||||
| 2013 | Terschelling, Paal 18 | 11 August | Terschelling, Paal 18 | 22 September | |||||
| 2012 | Terschelling, Paal 18 | 20 August | Terschelling, Paal 18 | 17 November | |||||
| 2011 | Terschelling, Paal 18 | 1 September | Terschelling, Paal 18 | 26 November | |||||
| 2009 | Terschelling, Paal 18 | 28 September | Terschelling, Paal 18 | 28 September | |||||
| 2008 | Terschelling, Paal 18 | 17 August | Terschelling, Paal 18 | 17 August | |||||
| 2005 | Terschelling, Paal 18 | 10 September | Terschelling, Paal 18 | 10 September | |||||
| 2003 | Terschelling, Paal 18 | 1 September | Terschelling, Paal 18 | 1 September | |||||
| 2002 | Terschelling, Paal 18 | 30 June | Terschelling, Paal 18 | 30 June | |||||
| 2000 | Terschelling, Paal 18 | 5 October | Terschelling, Paal 18 | 12 October | |||||
| 1993 | Terschelling, Paal 18 | 9 May | Terschelling, Paal 18 | 18 October | |||||
| 1990 | Terschelling, Paal 18 | 15 September | Terschelling, Paal 18 | 15 September | |||||
| 1987 | Terschelling, Paal 18 | 3 October | Terschelling, Paal 18 | 3 October | |||||
| 1986 | Terschelling, Paal 18 | 8 August | Terschelling, Paal 18 | 12 August | |||||
| 1985 | Terschelling, Paal 18 | 10 July | Terschelling, Paal 18 | 11 September | |||||
| 1984 | Terschelling, Paal 18 | 8 August | Terschelling, Paal 18 | 15 August | |||||
| 1983 | Terschelling, Paal 18 | 14 August | Terschelling, Paal 18 | 21 September | |||||
| 1982 | Terschelling, Paal 18 | 26 August | Terschelling, Paal 18 | 26 August | |||||
| 1981 | Terschelling, Paal 18 | 8 June | Terschelling, Paal 18 | 9 August | |||||
| 1980 | Terschelling, Paal 18 | 31 July | Terschelling, Paal 18 | 20 October | |||||
| 1979 | Terschelling, Paal 18 | 7 August | Terschelling, Paal 18 | 17 August | |||||
| 1978 | Terschelling, Paal 18 | 29 March | Terschelling, Paal 18 | 22 August | |||||
| 1977 | Terschelling, Paal 18 | 4 August | Terschelling, Paal 18 | 3 September | |||||
| 1976 | Terschelling, Paal 18 | 4 April | Terschelling, Paal 18 | 11 April | |||||
| 1974 | Terschelling, Paal 18 | 4 May | Terschelling, Paal 18 | 4 May | |||||
| 1973 | Terschelling, Paal 18 | 28 July | Terschelling, Paal 18 | 28 July | |||||
| 1972 | Terschelling, Paal 18 | 1 August | Terschelling, Paal 18 | 8 August |
