Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Gebrande Kamp, Middelaar | 22 July | Gebrande Kamp, Middelaar | 16 October | |||||
| 2020 | Gebrande Kamp, Middelaar | 8 April | Gebrande Kamp, Middelaar | 18 October | |||||
| 2019 | Gebrande Kamp, Middelaar | 1 August | Gebrande Kamp, Middelaar | 29 September | |||||
| 2018 | Gebrande Kamp, Middelaar | 28 August | Gebrande Kamp, Middelaar | 28 August | |||||
| 2009 | Gebrande Kamp, Middelaar | 29 August | Gebrande Kamp, Middelaar | 31 October | |||||
| 2007 | Gebrande Kamp, Middelaar | 15 November | Gebrande Kamp, Middelaar | 15 November | |||||
| 2004 | Gebrande Kamp, Middelaar | 23 April | Gebrande Kamp, Middelaar | 24 April |
