Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 30 | 13 September 1998 | |
| 2. | |
VRS Castricum | 8 | 18 September 1996 | |
| 3. | |
VRS Castricum | 5 | 15 September 1996 | |
| 4. | |
VRS Castricum | 4 | 3 September 1998 | |
| 5. | |
VRS Castricum | 3 | 19 August 1991 | |
| 6. | |
VRS Castricum | 3 | 3 September 1993 | |
| 7. | |
VRS Castricum | 3 | 1 September 1998 | |
| 8. | |
VRS Castricum | 2 | 14 September 1996 | |
| 9. | |
VRS Castricum | 2 | 2 September 1998 | |
| 10. | |
VRS Castricum | 2 | 6 September 1998 | |
| 11. | |
VRS Castricum | 2 | 21 August 1999 | |
| 12. | |
VRS Castricum | 2 | 22 August 1999 | |
| 13. | |
VRS Castricum | 2 | 30 August 2000 | |
| 14. | |
VRS Castricum | 1 | 9 September 1986 | |
| 15. | |
VRS Castricum | 1 | 25 August 1989 | |
| 16. | |
VRS Castricum | 1 | 16 July 1990 | |
| 17. | |
VRS Castricum | 1 | 16 September 1990 | |
| 18. | |
VRS Castricum | 1 | 2 September 1991 | |
| 19. | |
VRS Castricum | 1 | 26 July 1992 | |
| 20. | |
VRS Castricum | 1 | 2 August 1992 | |
| 21. | |
VRS Castricum | 1 | 22 August 1992 | |
| 22. | |
VRS Castricum | 1 | 3 July 1993 | |
| 23. | |
VRS Castricum | 1 | 31 August 1993 | |
| 24. | |
VRS Castricum | 1 | 1 September 1993 | |
| 25. | |
VRS Castricum | 1 | 4 September 1995 | |
| 26. | |
VRS Castricum | 1 | 20 September 1996 | |
| 27. | |
VRS Castricum | 1 | 30 August 1998 | |
| 28. | |
VRS Castricum | 1 | 13 September 2001 | |
| 29. | |
VRS Castricum | 1 | 23 August 2003 | |
| 30. | |
VRS Castricum | 1 | 1 September 2006 | |
| 31. | |
VRS Castricum | 1 | 27 December 2008 | |
| 32. | |
VRS Castricum | 1 | 25 August 2013 | |
