Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Gebrande Kamp, Middelaar | 7 april | Gebrande Kamp, Middelaar | 23 october | |||||
| 2019 | Gebrande Kamp, Middelaar | 20 april | Gebrande Kamp, Middelaar | 8 november | |||||
| 2018 | Gebrande Kamp, Middelaar | 3 august | Gebrande Kamp, Middelaar | 14 november | |||||
| 2010 | Gebrande Kamp, Middelaar | 22 september | Gebrande Kamp, Middelaar | 6 october | |||||
| 2009 | Gebrande Kamp, Middelaar | 21 august | Gebrande Kamp, Middelaar | 8 november | |||||
| 2008 | Gebrande Kamp, Middelaar | 25 february | Gebrande Kamp, Middelaar | 3 november | |||||
| 2007 | Gebrande Kamp, Middelaar | 12 september | Gebrande Kamp, Middelaar | 16 november | |||||
| 2004 | Gebrande Kamp, Middelaar | 13 march | Gebrande Kamp, Middelaar | 25 april |
