Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Parnassia, Kennemerduinen | 6 october | Parnassia, Kennemerduinen | 6 october | |||||
| 2016 | Parnassia, Kennemerduinen | 6 may | Parnassia, Kennemerduinen | 23 september | |||||
| 2014 | Parnassia, Kennemerduinen | 20 may | Parnassia, Kennemerduinen | 20 may | |||||
| 2013 | Parnassia, Kennemerduinen | 29 september | Parnassia, Kennemerduinen | 29 september | |||||
| 2011 | Parnassia, Kennemerduinen | 23 april | Parnassia, Kennemerduinen | 23 april |
