Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. | Parnassia, Kennemerduinen | 5 | 18 October 2003 | ||
| 2. | Parnassia, Kennemerduinen | 2 | 13 October 2003 | ||
| 3. | Parnassia, Kennemerduinen | 1 | 3 October 1971 | ||
| 4. | Parnassia, Kennemerduinen | 1 | 15 April 1988 | ||
| 5. | Parnassia, Kennemerduinen | 1 | 26 October 1991 | ||
| 6. | Parnassia, Kennemerduinen | 1 | 3 May 2014 | ||
