Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2023 | Breskens | 9 March | Breskens | 9 March | |||||
| 2022 | Breskens | 12 February | Breskens | 13 March | |||||
| 2021 | Breskens | 18 February | Breskens | 26 October | |||||
| 2020 | Breskens | 14 March | Breskens | 8 November | |||||
| 2019 | Breskens | 2 March | Breskens | 25 November | |||||
| 2018 | Breskens | 24 March | Breskens | 24 March | |||||
| 2017 | Breskens | 31 March | Breskens | 31 March | |||||
| 2016 | Breskens | 26 March | Breskens | 2 April | |||||
| 2015 | Breskens | 12 March | Breskens | 10 April | |||||
| 2014 | Breskens | 2 March | Breskens | 2 March | |||||
| 2013 | Breskens | 8 April | Breskens | 8 April | |||||
| 2012 | Breskens | 23 March | Breskens | 18 May | |||||
| 2011 | Breskens | 24 March | Breskens | 2 April | |||||
| 2010 | Breskens | 24 March | Breskens | 27 March | |||||
| 2009 | Breskens | 21 March | Breskens | 3 April | |||||
| 2008 | Breskens | 29 March | Breskens | 8 November | |||||
| 2007 | Breskens | 12 March | Breskens | 2 April | |||||
| 2006 | Breskens | 15 April | Breskens | 15 April | |||||
| 2005 | Breskens | 21 March | Breskens | 21 May | |||||
| 2003 | Breskens | 17 March | Breskens | 4 May | |||||
| 2002 | Breskens | 11 March | Breskens | 2 April | |||||
| 1997 | Breskens | 3 May | Breskens | 24 May | |||||
| 1996 | Breskens | 24 March | Breskens | 5 May | |||||
| 1994 | Breskens | 11 March | Breskens | 20 April | |||||
| 1992 | Breskens | 8 February | Breskens | 8 February | |||||
| 1991 | Breskens | 11 April | Breskens | 11 April | |||||
| 1990 | Breskens | 17 March | Breskens | 17 March | |||||
| 1988 | Breskens | 13 May | Breskens | 13 May |
