Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Honnay | 18 august | Honnay | 14 november | |||||
| 2019 | Honnay | 3 september | Honnay | 31 october | |||||
| 2018 | Honnay | 23 august | Honnay | 28 october | |||||
| 2017 | Honnay | 24 august | Honnay | 26 october | |||||
| 2016 | Honnay | 26 august | Honnay | 30 october | |||||
| 2015 | Honnay | 23 august | Honnay | 24 october | |||||
| 2014 | Honnay | 26 october | Honnay | 26 october | |||||
| 2013 | Honnay | 26 october | Honnay | 26 october | |||||
| 2011 | Honnay | 31 august | Honnay | 2 october | |||||
| 2008 | Honnay | 11 september | Honnay | 11 september | |||||
| 2006 | Honnay | 22 october | Honnay | 29 october | |||||
| 2005 | Honnay | 31 october | Honnay | 31 october | |||||
| 2001 | Honnay | 18 august | Honnay | 14 october |
