Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 1 July | Gebrande Kamp, Middelaar | 20 September | |||||
| 2020 | Gebrande Kamp, Middelaar | 7 April | Gebrande Kamp, Middelaar | 13 September | |||||
| 2019 | Gebrande Kamp, Middelaar | 20 April | Gebrande Kamp, Middelaar | 9 September | |||||
| 2018 | Gebrande Kamp, Middelaar | 13 July | Gebrande Kamp, Middelaar | 26 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 29 August | Gebrande Kamp, Middelaar | 18 September | |||||
| 2008 | Gebrande Kamp, Middelaar | 31 March | Gebrande Kamp, Middelaar | 13 September | |||||
| 2007 | Gebrande Kamp, Middelaar | 30 June | Gebrande Kamp, Middelaar | 30 September | |||||
| 2004 | Gebrande Kamp, Middelaar | 14 April | Gebrande Kamp, Middelaar | 1 May |
