Record counts
| # | Migration site | Totals | Date | ||
|---|---|---|---|---|---|
| 1. | Parnassia, Kennemerduinen | 3 | 3 November 1985 | ||
| 2. | Parnassia, Kennemerduinen | 2 | 6 September 1981 | ||
| 3. | Parnassia, Kennemerduinen | 1 | 7 November 1981 | ||
| 4. | Parnassia, Kennemerduinen | 1 | 13 November 1983 | ||
| 5. | Parnassia, Kennemerduinen | 1 | 12 October 1984 | ||
| 6. | Parnassia, Kennemerduinen | 1 | 25 November 1984 | ||
| 7. | Parnassia, Kennemerduinen | 1 | 2 November 1985 | ||
