Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Terschelling, Paal 18 | 9 October | Terschelling, Paal 18 | 9 October | |||||
| 2019 | Terschelling, Paal 18 | 18 October | Terschelling, Paal 18 | 18 October | |||||
| 2018 | Terschelling, Paal 18 | 7 October | Terschelling, Paal 18 | 12 October | |||||
| 2017 | Terschelling, Paal 18 | 6 October | Terschelling, Paal 18 | 25 November | |||||
| 2008 | Terschelling, Paal 18 | 28 September | Terschelling, Paal 18 | 28 September | |||||
| 2004 | Terschelling, Paal 18 | 13 November | Terschelling, Paal 18 | 14 November |
