Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2023 | Breskens | 28 March | Breskens | 4 May | |||||
| 2022 | Breskens | 27 February | Breskens | 25 April | |||||
| 2021 | Breskens | 10 April | Breskens | 6 November | |||||
| 2020 | Breskens | 23 March | Breskens | 7 May | |||||
| 2019 | Breskens | 6 April | Breskens | 30 April | |||||
| 2018 | Breskens | 12 May | Breskens | 12 May | |||||
| 2013 | Breskens | 9 April | Breskens | 9 April | |||||
| 2011 | Breskens | 24 March | Breskens | 24 March | |||||
| 2008 | Breskens | 26 April | Breskens | 22 May | |||||
| 2007 | Breskens | 27 March | Breskens | 3 April | |||||
| 2006 | Breskens | 16 March | Breskens | 16 March | |||||
| 2004 | Breskens | 10 March | Breskens | 13 May | |||||
| 2003 | Breskens | 15 March | Breskens | 15 March | |||||
| 2002 | Breskens | 25 March | Breskens | 27 March | |||||
| 2001 | Breskens | 17 February | Breskens | 1 May | |||||
| 2000 | Breskens | 9 April | Breskens | 16 April | |||||
| 1999 | Breskens | 25 March | Breskens | 7 May | |||||
| 1996 | Breskens | 26 March | Breskens | 26 March | |||||
| 1995 | Breskens | 29 April | Breskens | 29 April | |||||
| 1994 | Breskens | 16 April | Breskens | 14 May | |||||
| 1993 | Breskens | 31 January | Breskens | 10 May | |||||
| 1992 | Breskens | 28 February | Breskens | 23 May | |||||
| 1991 | Breskens | 26 January | Breskens | 26 January | |||||
| 1990 | Breskens | 31 March | Breskens | 16 May | |||||
| 1989 | Breskens | 4 April | Breskens | 9 May | |||||
| 1988 | Breskens | 13 May | Breskens | 13 May | |||||
| 1985 | Breskens | 8 February | Breskens | 8 February | |||||
| 1984 | Breskens | 20 March | Breskens | 11 May | |||||
| 1982 | Breskens | 14 March | Breskens | 17 April |
