Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Breskens | 12 April | Breskens | 4 May | |||||
| 2021 | Breskens | 30 March | Breskens | 25 October | |||||
| 2020 | Breskens | 4 April | Breskens | 28 May | |||||
| 2019 | Breskens | 5 April | Breskens | 8 September | |||||
| 2018 | Breskens | 6 October | Breskens | 6 October | |||||
| 2013 | Breskens | 9 April | Breskens | 9 April | |||||
| 2012 | Breskens | 7 May | Breskens | 7 May | |||||
| 2011 | Breskens | 2 April | Breskens | 1 May | |||||
| 2010 | Breskens | 30 March | Breskens | 28 April | |||||
| 2009 | Breskens | 2 April | Breskens | 2 April | |||||
| 2008 | Breskens | 19 April | Breskens | 19 April | |||||
| 2007 | Breskens | 15 April | Breskens | 15 April | |||||
| 2006 | Breskens | 15 April | Breskens | 15 April | |||||
| 2005 | Breskens | 23 April | Breskens | 10 November | |||||
| 2004 | Breskens | 10 April | Breskens | 1 May | |||||
| 2003 | Breskens | 22 March | Breskens | 22 March | |||||
| 2002 | Breskens | 2 April | Breskens | 2 April | |||||
| 1999 | Breskens | 24 April | Breskens | 24 April | |||||
| 1998 | Breskens | 10 April | Breskens | 10 April | |||||
| 1997 | Breskens | 30 March | Breskens | 30 March | |||||
| 1993 | Breskens | 30 April | Breskens | 30 April | |||||
| 1992 | Breskens | 9 April | Breskens | 9 April | |||||
| 1991 | Breskens | 13 April | Breskens | 13 April | |||||
| 1989 | Breskens | 11 April | Breskens | 11 April | |||||
| 1982 | Breskens | 5 April | Breskens | 5 April |
