Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 20 September | Gebrande Kamp, Middelaar | 24 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 12 September | Gebrande Kamp, Middelaar | 1 November | |||||
| 2019 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 21 October | |||||
| 2018 | Gebrande Kamp, Middelaar | 18 September | Gebrande Kamp, Middelaar | 27 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 18 September | Gebrande Kamp, Middelaar | 2 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 12 September | Gebrande Kamp, Middelaar | 20 October | |||||
| 2007 | Gebrande Kamp, Middelaar | 12 September | Gebrande Kamp, Middelaar | 5 November | |||||
| 2004 | Gebrande Kamp, Middelaar | 23 April | Gebrande Kamp, Middelaar | 23 April |
