Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Honnay | 9 september | Honnay | 8 november | |||||
| 2018 | Honnay | 28 september | Honnay | 17 november | |||||
| 2017 | Honnay | 7 october | Honnay | 7 november | |||||
| 2016 | Honnay | 21 september | Honnay | 31 october | |||||
| 2015 | Honnay | 10 october | Honnay | 1 november | |||||
| 2014 | Honnay | 12 october | Honnay | 26 october | |||||
| 2013 | Honnay | 19 october | Honnay | 31 october | |||||
| 2011 | Honnay | 15 october | Honnay | 29 october | |||||
| 2010 | Honnay | 23 october | Honnay | 23 october | |||||
| 2009 | Honnay | 26 september | Honnay | 31 october | |||||
| 2008 | Honnay | 11 october | Honnay | 8 november | |||||
| 2007 | Honnay | 6 october | Honnay | 27 october | |||||
| 2006 | Honnay | 28 october | Honnay | 29 october | |||||
| 2005 | Honnay | 3 september | Honnay | 1 november | |||||
| 2001 | Honnay | 28 september | Honnay | 16 october |
