Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 9 September | Gebrande Kamp, Middelaar | 28 September | |||||
| 2020 | Gebrande Kamp, Middelaar | 11 September | Gebrande Kamp, Middelaar | 12 October | |||||
| 2018 | Gebrande Kamp, Middelaar | 4 September | Gebrande Kamp, Middelaar | 4 September | |||||
| 2008 | Gebrande Kamp, Middelaar | 10 September | Gebrande Kamp, Middelaar | 19 September | |||||
| 2004 | Gebrande Kamp, Middelaar | 4 April | Gebrande Kamp, Middelaar | 4 April |
