Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 4 | 4 June 2011 | |
| 2. | |
VRS Castricum | 2 | 29 September 1966 | |
| 3. | |
VRS Castricum | 1 | 16 November 1968 | |
| 4. | |
VRS Castricum | 1 | 17 October 1972 | |
| 5. | |
VRS Castricum | 1 | 21 December 1981 | |
| 6. | |
VRS Castricum | 1 | 18 February 1985 | |
| 7. | |
VRS Castricum | 1 | 25 January 1992 | |
| 8. | |
VRS Castricum | 1 | 9 August 1994 | |
| 9. | |
VRS Castricum | 1 | 26 December 1996 | |
| 10. | |
VRS Castricum | 1 | 1 January 1997 | |
| 11. | |
VRS Castricum | 1 | 4 November 1997 | |
| 12. | |
VRS Castricum | 1 | 13 November 1997 | |
| 13. | |
VRS Castricum | 1 | 3 November 1999 | |
| 14. | |
VRS Castricum | 1 | 12 October 2005 | |
| 15. | |
VRS Castricum | 1 | 3 October 2006 | |
| 16. | |
VRS Castricum | 1 | 10 March 2007 | |
| 17. | |
VRS Castricum | 1 | 22 December 2010 | |
| 18. | |
VRS Castricum | 1 | 28 October 2012 | |
| 19. | |
VRS Castricum | 1 | 23 November 2016 | |
| 20. | |
VRS Castricum | 1 | 9 September 2017 | |
