Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 22 July | Gebrande Kamp, Middelaar | 13 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 8 April | Gebrande Kamp, Middelaar | 31 October | |||||
| 2019 | Gebrande Kamp, Middelaar | 4 November | Gebrande Kamp, Middelaar | 4 November | |||||
| 2018 | Gebrande Kamp, Middelaar | 13 August | Gebrande Kamp, Middelaar | 30 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 7 October | Gebrande Kamp, Middelaar | 2 November | |||||
| 2008 | Gebrande Kamp, Middelaar | 25 September | Gebrande Kamp, Middelaar | 25 September | |||||
| 2007 | Gebrande Kamp, Middelaar | 28 July | Gebrande Kamp, Middelaar | 26 October | |||||
| 2004 | Gebrande Kamp, Middelaar | 18 March | Gebrande Kamp, Middelaar | 18 March |
