Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Breskens | 11 March | Breskens | 15 May | |||||
| 2021 | Breskens | 9 May | Breskens | 28 October | |||||
| 2020 | Breskens | 24 March | Breskens | 14 November | |||||
| 2019 | Breskens | 23 February | Breskens | 5 November | |||||
| 2018 | Breskens | 26 May | Breskens | 26 May | |||||
| 2017 | Breskens | 27 March | Breskens | 26 May | |||||
| 2016 | Breskens | 8 May | Breskens | 8 May | |||||
| 2015 | Breskens | 3 October | Breskens | 3 October | |||||
| 2014 | Breskens | 28 March | Breskens | 19 October | |||||
| 2012 | Breskens | 26 May | Breskens | 27 May | |||||
| 2011 | Breskens | 24 April | Breskens | 3 June | |||||
| 2010 | Breskens | 24 March | Breskens | 24 March | |||||
| 2009 | Breskens | 3 October | Breskens | 3 October | |||||
| 2007 | Breskens | 27 April | Breskens | 27 April | |||||
| 1995 | Breskens | 6 May | Breskens | 6 May | |||||
| 1993 | Breskens | 25 May | Breskens | 25 May | |||||
| 1992 | Breskens | 20 May | Breskens | 31 May | |||||
| 1991 | Breskens | 13 March | Breskens | 13 March |
