Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2009 | Gebrande Kamp, Middelaar | 21 October | Gebrande Kamp, Middelaar | 31 October | |||||
| 2008 | Gebrande Kamp, Middelaar | 19 October | Gebrande Kamp, Middelaar | 25 October | |||||
| 2007 | Gebrande Kamp, Middelaar | 18 October | Gebrande Kamp, Middelaar | 18 October |
