Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Parnassia, Kennemerduinen | 26 September | Parnassia, Kennemerduinen | 26 September | |||||
| 2018 | Parnassia, Kennemerduinen | 6 October | Parnassia, Kennemerduinen | 6 October | |||||
| 2016 | Parnassia, Kennemerduinen | 15 September | Parnassia, Kennemerduinen | 15 September | |||||
| 2014 | Parnassia, Kennemerduinen | 29 September | Parnassia, Kennemerduinen | 29 September | |||||
| 2013 | Parnassia, Kennemerduinen | 27 September | Parnassia, Kennemerduinen | 27 September |
