Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Breskens | 21 September | Breskens | 14 November | |||||
| 2020 | Breskens | 4 April | Breskens | 31 October | |||||
| 2019 | Breskens | 20 April | Breskens | 10 November | |||||
| 2018 | Breskens | 14 March | Breskens | 15 March | |||||
| 2016 | Breskens | 26 March | Breskens | 26 March | |||||
| 2015 | Breskens | 3 October | Breskens | 3 October | |||||
| 2013 | Breskens | 8 April | Breskens | 9 April | |||||
| 2011 | Breskens | 24 March | Breskens | 24 March | |||||
| 2008 | Breskens | 27 September | Breskens | 27 September | |||||
| 2007 | Breskens | 15 October | Breskens | 15 October | |||||
| 2005 | Breskens | 29 March | Breskens | 29 March | |||||
| 2004 | Breskens | 31 March | Breskens | 15 April | |||||
| 2000 | Breskens | 22 March | Breskens | 22 March | |||||
| 1999 | Breskens | 12 March | Breskens | 12 March | |||||
| 1998 | Breskens | 18 March | Breskens | 31 March | |||||
| 1997 | Breskens | 2 May | Breskens | 2 May | |||||
| 1996 | Breskens | 10 April | Breskens | 14 April | |||||
| 1995 | Breskens | 1 April | Breskens | 1 April | |||||
| 1994 | Breskens | 11 March | Breskens | 11 March | |||||
| 1993 | Breskens | 13 March | Breskens | 3 April | |||||
| 1992 | Breskens | 29 February | Breskens | 7 March | |||||
| 1991 | Breskens | 13 March | Breskens | 13 March | |||||
| 1990 | Breskens | 23 February | Breskens | 1 April | |||||
| 1989 | Breskens | 9 April | Breskens | 15 April | |||||
| 1981 | Breskens | 26 April | Breskens | 26 April |
