Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 5 | 2 August 1990 | |
| 2. | |
VRS Castricum | 3 | 23 September 1995 | |
| 3. | |
VRS Castricum | 2 | 20 October 1994 | |
| 4. | |
VRS Castricum | 2 | 7 January 1997 | |
| 5. | |
VRS Castricum | 2 | 18 September 2004 | |
| 6. | |
VRS Castricum | 2 | 15 October 2008 | |
| 7. | |
VRS Castricum | 2 | 17 September 2017 | |
| 8. | |
VRS Castricum | 2 | 9 August 2018 | |
| 9. | |
VRS Castricum | 1 | 31 January 1989 | |
| 10. | |
VRS Castricum | 1 | 9 February 1996 | |
| 11. | |
VRS Castricum | 1 | 9 January 1997 | |
| 12. | |
VRS Castricum | 1 | 7 September 2000 | |
| 13. | |
VRS Castricum | 1 | 16 August 2001 | |
| 14. | |
VRS Castricum | 1 | 21 September 2002 | |
| 15. | |
VRS Castricum | 1 | 10 June 2003 | |
| 16. | |
VRS Castricum | 1 | 3 August 2005 | |
| 17. | |
VRS Castricum | 1 | 19 June 2007 | |
| 18. | |
VRS Castricum | 1 | 31 October 2007 | |
| 19. | |
VRS Castricum | 1 | 30 August 2009 | |
| 20. | |
VRS Castricum | 1 | 29 December 2010 | |
| 21. | |
VRS Castricum | 1 | 13 February 2012 | |
| 22. | |
VRS Castricum | 1 | 17 April 2013 | |
| 23. | |
VRS Castricum | 1 | 12 April 2015 | |
| 24. | |
VRS Castricum | 1 | 20 September 2016 | |
| 25. | |
VRS Castricum | 1 | 4 March 2017 | |
