Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. |  |
VRS Castricum | 10 | 5 June 2002 | |
| 2. | |
VRS Castricum | 7 | 3 June 2007 | |
| 3. | |
VRS Castricum | 1 | 19 June 2003 | |
| 4. | |
VRS Castricum | 1 | 18 July 2004 | |
| 5. | |
VRS Castricum | 1 | 3 June 2006 | |
| 6. | |
VRS Castricum | 1 | 26 June 2008 | |
| 7. | |
VRS Castricum | 1 | 16 August 2008 | |
| 8. | |
VRS Castricum | 1 | 9 June 2009 | |
| 9. | |
VRS Castricum | 1 | 15 June 2011 | |
| 10. | |
VRS Castricum | 1 | 31 May 2018 | |
| 11. | |
VRS Castricum | 1 | 7 June 2019 | |
