Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 |  |
VRS Klarenbeek | 21 April | |
VRS Klarenbeek | 14 November | |||
| 2020 | |
VRS Klarenbeek | 27 March | |
VRS Klarenbeek | 13 November | |||
| 2019 | |
VRS Klarenbeek | 20 April | |
VRS Klarenbeek | 10 October | |||
| 2018 | |
VRS Klarenbeek | 17 April | |
VRS Klarenbeek | 25 October | |||
| 2017 | |
VRS Klarenbeek | 3 March | |
VRS Klarenbeek | 7 October | |||
| 2016 | |
VRS Klarenbeek | 27 February | |
VRS Klarenbeek | 25 November | |||
| 2015 | |
VRS Klarenbeek | 14 April | |
VRS Klarenbeek | 23 November | |||
| 2014 | |
VRS Klarenbeek | 4 April | |
VRS Klarenbeek | 14 November | |||
| 2013 | |
VRS Klarenbeek | 4 January | |
VRS Klarenbeek | 7 December | |||
| 2012 | |
VRS Klarenbeek | 15 March | |
VRS Klarenbeek | 26 November |
