Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Honnay | 5 october | Honnay | 8 november | |||||
| 2018 | Honnay | 27 september | Honnay | 18 november | |||||
| 2017 | Honnay | 9 october | Honnay | 3 november | |||||
| 2016 | Honnay | 15 october | Honnay | 31 october | |||||
| 2015 | Honnay | 10 october | Honnay | 1 november | |||||
| 2014 | Honnay | 26 october | Honnay | 26 october | |||||
| 2013 | Honnay | 16 october | Honnay | 31 october | |||||
| 2012 | Honnay | 1 october | Honnay | 1 october | |||||
| 2011 | Honnay | 1 october | Honnay | 29 october | |||||
| 2010 | Honnay | 2 october | Honnay | 24 october | |||||
| 2009 | Honnay | 18 october | Honnay | 31 october | |||||
| 2008 | Honnay | 28 september | Honnay | 8 november | |||||
| 2007 | Honnay | 29 september | Honnay | 18 november | |||||
| 2006 | Honnay | 22 october | Honnay | 29 october | |||||
| 2005 | Honnay | 8 october | Honnay | 4 november | |||||
| 2001 | Honnay | 24 september | Honnay | 16 october |
