Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 4 | 22 August 1993 | |
| 2. | |
VRS Castricum | 2 | 25 April 1977 | |
| 3. | |
VRS Castricum | 2 | 17 September 1993 | |
| 4. | |
VRS Castricum | 1 | 14 October 1980 | |
| 5. | |
VRS Castricum | 1 | 18 August 1987 | |
| 6. | |
VRS Castricum | 1 | 19 September 1987 | |
| 7. | |
VRS Castricum | 1 | 29 September 1987 | |
| 8. | |
VRS Castricum | 1 | 15 September 1988 | |
| 9. | |
VRS Castricum | 1 | 4 September 1989 | |
| 10. | |
VRS Castricum | 1 | 5 September 1995 | |
| 11. | |
VRS Castricum | 1 | 30 September 1995 | |
| 12. | |
VRS Castricum | 1 | 18 November 2000 | |
| 13. | |
VRS Castricum | 1 | 13 September 2002 | |
| 14. | |
VRS Castricum | 1 | 25 August 2013 | |
| 15. | |
VRS Castricum | 1 | 2 October 2015 | |
| 16. | |
VRS Castricum | 1 | 13 May 2017 | |
| 17. | |
VRS Castricum | 1 | 6 October 2019 | |
