Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Gebrande Kamp, Middelaar | 30 July | Gebrande Kamp, Middelaar | 29 October | |||||
| 2021 | Gebrande Kamp, Middelaar | 1 July | Gebrande Kamp, Middelaar | 1 November | |||||
| 2020 | Gebrande Kamp, Middelaar | 8 April | Gebrande Kamp, Middelaar | 15 November | |||||
| 2019 | Gebrande Kamp, Middelaar | 19 April | Gebrande Kamp, Middelaar | 9 November | |||||
| 2018 | Gebrande Kamp, Middelaar | 9 July | Gebrande Kamp, Middelaar | 10 November | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 22 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 1 September | Gebrande Kamp, Middelaar | 8 November | |||||
| 2008 | Gebrande Kamp, Middelaar | 9 March | Gebrande Kamp, Middelaar | 2 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 1 July | Gebrande Kamp, Middelaar | 15 November | |||||
| 2004 | Gebrande Kamp, Middelaar | 13 March | Gebrande Kamp, Middelaar | 30 April |
