Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 6 | 31 October 2016 | |
| 2. | |
VRS Castricum | 4 | 26 October 2010 | |
| 3. | |
VRS Castricum | 3 | 1 November 2016 | |
| 4. | |
VRS Castricum | 3 | 3 November 2016 | |
| 5. | |
VRS Castricum | 2 | 14 November 2012 | |
| 6. | |
VRS Castricum | 1 | 24 October 1988 | |
| 7. | |
VRS Castricum | 1 | 10 January 2003 | |
| 8. | |
VRS Castricum | 1 | 6 November 2012 | |
| 9. | |
VRS Castricum | 1 | 28 November 2012 | |
| 10. | |
VRS Castricum | 1 | 29 November 2012 | |
| 11. | |
VRS Castricum | 1 | 8 December 2012 | |
| 12. | |
VRS Castricum | 1 | 24 October 2016 | |
