Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Gebrande Kamp, Middelaar | 27 april | Gebrande Kamp, Middelaar | 5 august | |||||
| 2019 | Gebrande Kamp, Middelaar | 20 april | Gebrande Kamp, Middelaar | 19 august | |||||
| 2018 | Gebrande Kamp, Middelaar | 9 july | Gebrande Kamp, Middelaar | 30 august | |||||
| 2008 | Gebrande Kamp, Middelaar | 26 april | Gebrande Kamp, Middelaar | 18 august | |||||
| 2007 | Gebrande Kamp, Middelaar | 8 july | Gebrande Kamp, Middelaar | 3 august | |||||
| 2004 | Gebrande Kamp, Middelaar | 23 april | Gebrande Kamp, Middelaar | 24 april |
