Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Breskens | 10 March | Breskens | 10 March | |||||
| 2020 | Breskens | 14 March | Breskens | 8 November | |||||
| 2018 | Breskens | 23 February | Breskens | 6 October | |||||
| 2015 | Breskens | 13 March | Breskens | 10 April | |||||
| 2013 | Breskens | 9 April | Breskens | 9 April | |||||
| 2008 | Breskens | 11 October | Breskens | 11 October | |||||
| 2004 | Breskens | 24 March | Breskens | 24 March | |||||
| 2003 | Breskens | 21 March | Breskens | 21 March | |||||
| 1998 | Breskens | 28 March | Breskens | 31 March | |||||
| 1997 | Breskens | 10 March | Breskens | 10 March |
