Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Gebrande Kamp, Middelaar | 10 april | Gebrande Kamp, Middelaar | 13 october | |||||
| 2019 | Gebrande Kamp, Middelaar | 26 april | Gebrande Kamp, Middelaar | 23 october | |||||
| 2018 | Gebrande Kamp, Middelaar | 23 september | Gebrande Kamp, Middelaar | 2 november | |||||
| 2009 | Gebrande Kamp, Middelaar | 9 october | Gebrande Kamp, Middelaar | 9 october | |||||
| 2008 | Gebrande Kamp, Middelaar | 10 september | Gebrande Kamp, Middelaar | 26 october | |||||
| 2007 | Gebrande Kamp, Middelaar | 14 july | Gebrande Kamp, Middelaar | 16 november |
