Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 12 July | Gebrande Kamp, Middelaar | 31 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 7 April | Gebrande Kamp, Middelaar | 8 November | |||||
| 2019 | Gebrande Kamp, Middelaar | 2 August | Gebrande Kamp, Middelaar | 8 November | |||||
| 2018 | Gebrande Kamp, Middelaar | 4 August | Gebrande Kamp, Middelaar | 31 October | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 6 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 21 August | Gebrande Kamp, Middelaar | 31 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 11 August | Gebrande Kamp, Middelaar | 2 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 1 August | Gebrande Kamp, Middelaar | 5 November | |||||
| 2004 | Gebrande Kamp, Middelaar | 25 March | Gebrande Kamp, Middelaar | 17 April |
