Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. | Parnassia, Kennemerduinen | 3 | 14 October 2013 | ||
| 2. | Parnassia, Kennemerduinen | 1 | 2 October 2014 | ||
| 3. | Parnassia, Kennemerduinen | 1 | 11 October 2014 | ||
| 4. | Parnassia, Kennemerduinen | 1 | 30 October 2014 | ||
| 5. | Parnassia, Kennemerduinen | 1 | 12 October 2018 | ||
| 6. | Parnassia, Kennemerduinen | 1 | 14 October 2018 | ||
| 7. | Parnassia, Kennemerduinen | 1 | 13 October 2019 | ||
