Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Gebrande Kamp, Middelaar | 25 July | Gebrande Kamp, Middelaar | 17 August | |||||
| 2021 | Gebrande Kamp, Middelaar | 24 July | Gebrande Kamp, Middelaar | 13 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 10 April | Gebrande Kamp, Middelaar | 3 October | |||||
| 2019 | Gebrande Kamp, Middelaar | 19 April | Gebrande Kamp, Middelaar | 2 October | |||||
| 2018 | Gebrande Kamp, Middelaar | 1 August | Gebrande Kamp, Middelaar | 10 October | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 6 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 21 August | Gebrande Kamp, Middelaar | 9 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 25 April | Gebrande Kamp, Middelaar | 10 October | |||||
| 2007 | Gebrande Kamp, Middelaar | 11 July | Gebrande Kamp, Middelaar | 7 October | |||||
| 2004 | Gebrande Kamp, Middelaar | 2 April | Gebrande Kamp, Middelaar | 1 May |
