Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Breskens | 20 November | Breskens | 20 November | |||||
| 2013 | Breskens | 17 March | Breskens | 17 March | |||||
| 2010 | Breskens | 28 October | Breskens | 28 October | |||||
| 2008 | Breskens | 4 May | Breskens | 4 May | |||||
| 2005 | Breskens | 11 January | Breskens | 11 January | |||||
| 2003 | Breskens | 14 February | Breskens | 21 February | |||||
| 2001 | Breskens | 20 March | Breskens | 20 March | |||||
| 1996 | Breskens | 30 January | Breskens | 30 January |
