Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2023 | Breskens | 7 February | Breskens | 4 May | |||||
| 2022 | Breskens | 12 February | Breskens | 19 November | |||||
| 2021 | Breskens | 28 February | Breskens | 24 November | |||||
| 2020 | Breskens | 7 March | Breskens | 28 November | |||||
| 2019 | Breskens | 5 March | Breskens | 25 November | |||||
| 2018 | Breskens | 12 March | Breskens | 6 October | |||||
| 2017 | Breskens | 3 March | Breskens | 27 May | |||||
| 2016 | Breskens | 2 April | Breskens | 17 October | |||||
| 2015 | Breskens | 17 March | Breskens | 3 October | |||||
| 2014 | Breskens | 28 March | Breskens | 19 October | |||||
| 2013 | Breskens | 18 February | Breskens | 14 April | |||||
| 2012 | Breskens | 26 March | Breskens | 13 October | |||||
| 2011 | Breskens | 29 January | Breskens | 24 October | |||||
| 2010 | Breskens | 6 March | Breskens | 28 December | |||||
| 2009 | Breskens | 21 February | Breskens | 1 November | |||||
| 2008 | Breskens | 12 January | Breskens | 13 December | |||||
| 2007 | Breskens | 4 March | Breskens | 15 December | |||||
| 2006 | Breskens | 25 February | Breskens | 25 November | |||||
| 2005 | Breskens | 6 February | Breskens | 10 December | |||||
| 2004 | Breskens | 15 March | Breskens | 9 October | |||||
| 2003 | Breskens | 7 February | Breskens | 19 October | |||||
| 2002 | Breskens | 2 March | Breskens | 17 May | |||||
| 2001 | Breskens | 10 February | Breskens | 12 May | |||||
| 2000 | Breskens | 9 April | Breskens | 25 April | |||||
| 1999 | Breskens | 12 March | Breskens | 26 April | |||||
| 1998 | Breskens | 14 February | Breskens | 10 May | |||||
| 1997 | Breskens | 5 March | Breskens | 4 May | |||||
| 1996 | Breskens | 11 March | Breskens | 8 May | |||||
| 1995 | Breskens | 10 March | Breskens | 3 May | |||||
| 1994 | Breskens | 25 February | Breskens | 10 May | |||||
| 1993 | Breskens | 23 February | Breskens | 10 May | |||||
| 1992 | Breskens | 10 February | Breskens | 23 May | |||||
| 1991 | Breskens | 13 March | Breskens | 10 May | |||||
| 1990 | Breskens | 10 February | Breskens | 18 May | |||||
| 1989 | Breskens | 28 January | Breskens | 4 May | |||||
| 1988 | Breskens | 1 April | Breskens | 23 May | |||||
| 1986 | Breskens | 10 March | Breskens | 17 May | |||||
| 1984 | Breskens | 15 March | Breskens | 19 May | |||||
| 1983 | Breskens | 20 March | Breskens | 20 March | |||||
| 1982 | Breskens | 6 April | Breskens | 12 May | |||||
| 1981 | Breskens | 28 March | Breskens | 11 April |
