Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 25 July | Gebrande Kamp, Middelaar | 7 August | |||||
| 2020 | Gebrande Kamp, Middelaar | 7 April | Gebrande Kamp, Middelaar | 20 September | |||||
| 2019 | Gebrande Kamp, Middelaar | 21 August | Gebrande Kamp, Middelaar | 21 August | |||||
| 2018 | Gebrande Kamp, Middelaar | 5 September | Gebrande Kamp, Middelaar | 10 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 1 September | Gebrande Kamp, Middelaar | 1 September | |||||
| 2008 | Gebrande Kamp, Middelaar | 31 March | Gebrande Kamp, Middelaar | 31 March |
