Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 12 July | Gebrande Kamp, Middelaar | 5 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 8 April | Gebrande Kamp, Middelaar | 13 October | |||||
| 2019 | Gebrande Kamp, Middelaar | 7 July | Gebrande Kamp, Middelaar | 23 October | |||||
| 2018 | Gebrande Kamp, Middelaar | 8 September | Gebrande Kamp, Middelaar | 25 September | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 26 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 9 October | Gebrande Kamp, Middelaar | 9 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 17 July | Gebrande Kamp, Middelaar | 4 October |
