Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2010 | Gebrande Kamp, Middelaar | 6 October | Gebrande Kamp, Middelaar | 6 October | |||||
| 2009 | Gebrande Kamp, Middelaar | 13 October | Gebrande Kamp, Middelaar | 8 November | |||||
| 2008 | Gebrande Kamp, Middelaar | 25 February | Gebrande Kamp, Middelaar | 17 November | |||||
| 2007 | Gebrande Kamp, Middelaar | 10 October | Gebrande Kamp, Middelaar | 16 November |
