Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 | Breskens | 11 April | Breskens | 24 April | |||||
| 2021 | Breskens | 8 May | Breskens | 8 May | |||||
| 2020 | Breskens | 6 April | Breskens | 10 May | |||||
| 2019 | Breskens | 12 April | Breskens | 20 April | |||||
| 2018 | Breskens | 31 March | Breskens | 11 May | |||||
| 2017 | Breskens | 31 March | Breskens | 6 May | |||||
| 2016 | Breskens | 21 April | Breskens | 9 May | |||||
| 2014 | Breskens | 25 April | Breskens | 26 April | |||||
| 2013 | Breskens | 14 April | Breskens | 14 April | |||||
| 2012 | Breskens | 23 April | Breskens | 7 May | |||||
| 2009 | Breskens | 10 April | Breskens | 24 April | |||||
| 2008 | Breskens | 22 April | Breskens | 22 May | |||||
| 2006 | Breskens | 3 May | Breskens | 3 May | |||||
| 2005 | Breskens | 21 April | Breskens | 1 May | |||||
| 2003 | Breskens | 21 April | Breskens | 21 April | |||||
| 2001 | Breskens | 24 April | Breskens | 24 April | |||||
| 1992 | Breskens | 14 May | Breskens | 14 May |
