Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 12 July | Gebrande Kamp, Middelaar | 5 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 10 April | Gebrande Kamp, Middelaar | 10 October | |||||
| 2019 | Gebrande Kamp, Middelaar | 20 April | Gebrande Kamp, Middelaar | 2 October | |||||
| 2018 | Gebrande Kamp, Middelaar | 13 July | Gebrande Kamp, Middelaar | 27 September | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 22 September | |||||
| 2009 | Gebrande Kamp, Middelaar | 21 August | Gebrande Kamp, Middelaar | 18 September | |||||
| 2008 | Gebrande Kamp, Middelaar | 2 July | Gebrande Kamp, Middelaar | 8 October | |||||
| 2007 | Gebrande Kamp, Middelaar | 30 June | Gebrande Kamp, Middelaar | 30 September | |||||
| 2004 | Gebrande Kamp, Middelaar | 17 April | Gebrande Kamp, Middelaar | 1 May |
