Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 17 February | Gebrande Kamp, Middelaar | 17 February | |||||
| 2020 | Gebrande Kamp, Middelaar | 8 April | Gebrande Kamp, Middelaar | 15 November | |||||
| 2019 | Gebrande Kamp, Middelaar | 27 July | Gebrande Kamp, Middelaar | 9 November | |||||
| 2018 | Gebrande Kamp, Middelaar | 3 August | Gebrande Kamp, Middelaar | 14 November | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 September | Gebrande Kamp, Middelaar | 6 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 1 September | Gebrande Kamp, Middelaar | 8 November | |||||
| 2008 | Gebrande Kamp, Middelaar | 8 February | Gebrande Kamp, Middelaar | 17 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 17 August | Gebrande Kamp, Middelaar | 28 November | |||||
| 2004 | Gebrande Kamp, Middelaar | 13 March | Gebrande Kamp, Middelaar | 23 April |
