Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Breskens | 9 May | Breskens | 9 May | |||||
| 2018 | Breskens | 22 May | Breskens | 22 May | |||||
| 2008 | Breskens | 9 May | Breskens | 9 May | |||||
| 2007 | Breskens | 23 May | Breskens | 23 May | |||||
| 2005 | Breskens | 15 May | Breskens | 15 May | |||||
| 1999 | Breskens | 1 May | Breskens | 1 May | |||||
| 1994 | Breskens | 10 May | Breskens | 10 May |
