Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Terschelling, Paal 18 | 14 October | Terschelling, Paal 18 | 14 October | |||||
| 2017 | Terschelling, Paal 18 | 4 June | Terschelling, Paal 18 | 4 June | |||||
| 2004 | Terschelling, Paal 18 | 5 October | Terschelling, Paal 18 | 5 October | |||||
| 2003 | Terschelling, Paal 18 | 8 October | Terschelling, Paal 18 | 8 October |
