Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 1 | 8 October 1977 | |
| 2. | |
VRS Castricum | 1 | 19 October 2006 | |
| 3. | |
VRS Castricum | 1 | 18 October 2012 | |
| 4. | |
VRS Castricum | 1 | 20 October 2012 | |
| 5. | |
VRS Castricum | 1 | 6 October 2014 | |
| 6. | |
VRS Castricum | 1 | 12 October 2016 | |
| 7. | |
VRS Castricum | 1 | 14 October 2016 | |
| 8. | |
VRS Castricum | 1 | 8 October 2018 | |
| 9. | |
VRS Castricum | 1 | 9 October 2020 | |
| 10. | |
VRS Castricum | 1 | 13 October 2020 | |
| 11. | |
VRS Castricum | 1 | 9 October 2021 | |
