Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Honnay | 23 october | Honnay | 23 october | |||||
| 2016 | Honnay | 30 october | Honnay | 30 october | |||||
| 2012 | Honnay | 29 august | Honnay | 30 august | |||||
| 2011 | Honnay | 15 october | Honnay | 16 october | |||||
| 2008 | Honnay | 25 october | Honnay | 25 october | |||||
| 2007 | Honnay | 14 october | Honnay | 14 october |
