Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 22 July | Gebrande Kamp, Middelaar | 24 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 12 April | Gebrande Kamp, Middelaar | 9 November | |||||
| 2019 | Gebrande Kamp, Middelaar | 3 July | Gebrande Kamp, Middelaar | 8 November | |||||
| 2018 | Gebrande Kamp, Middelaar | 1 August | Gebrande Kamp, Middelaar | 14 November | |||||
| 2010 | Gebrande Kamp, Middelaar | 25 September | Gebrande Kamp, Middelaar | 25 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 29 August | Gebrande Kamp, Middelaar | 20 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 18 March | Gebrande Kamp, Middelaar | 16 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 27 July | Gebrande Kamp, Middelaar | 21 October |
