Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Terschelling, Paal 18 | 15 October | Terschelling, Paal 18 | 15 October | |||||
| 2018 | Terschelling, Paal 18 | 14 October | Terschelling, Paal 18 | 14 October | |||||
| 2015 | Terschelling, Paal 18 | 20 October | Terschelling, Paal 18 | 20 October | |||||
| 2009 | Terschelling, Paal 18 | 22 November | Terschelling, Paal 18 | 22 November | |||||
| 2005 | Terschelling, Paal 18 | 10 September | Terschelling, Paal 18 | 10 September | |||||
| 1994 | Terschelling, Paal 18 | 1 October | Terschelling, Paal 18 | 1 October | |||||
| 1988 | Terschelling, Paal 18 | 20 November | Terschelling, Paal 18 | 20 November | |||||
| 1987 | Terschelling, Paal 18 | 3 October | Terschelling, Paal 18 | 3 October | |||||
| 1977 | Terschelling, Paal 18 | 28 April | Terschelling, Paal 18 | 7 August |
