Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2009 | Gebrande Kamp, Middelaar | 8 November | Gebrande Kamp, Middelaar | 8 November | |||||
| 2008 | Gebrande Kamp, Middelaar | 17 March | Gebrande Kamp, Middelaar | 8 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 10 August | Gebrande Kamp, Middelaar | 28 November |
