Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. | Parnassia, Kennemerduinen | 319 | 2 October 1999 | ||
| 2. | Parnassia, Kennemerduinen | 63 | 29 September 2011 | ||
| 3. | Parnassia, Kennemerduinen | 45 | 30 March 2014 | ||
| 4. | Parnassia, Kennemerduinen | 40 | 28 March 2014 | ||
| 5. | Parnassia, Kennemerduinen | 29 | 7 May 2013 | ||
| 6. | Parnassia, Kennemerduinen | 21 | 28 April 2014 | ||
| 7. | Parnassia, Kennemerduinen | 16 | 16 April 2014 | ||
| 8. | Parnassia, Kennemerduinen | 8 | 27 February 2007 | ||
| 9. | Parnassia, Kennemerduinen | 4 | 7 February 2021 | ||
| 10. | Parnassia, Kennemerduinen | 1 | 7 May 1988 | ||
