Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2018 | Honnay | 5 october | Honnay | 5 october | |||||
| 2017 | Honnay | 7 september | Honnay | 7 september | |||||
| 2016 | Honnay | 4 october | Honnay | 4 october | |||||
| 2015 | Honnay | 13 september | Honnay | 13 september | |||||
| 2013 | Honnay | 21 september | Honnay | 21 september | |||||
| 2010 | Honnay | 22 august | Honnay | 22 august | |||||
| 2001 | Honnay | 11 august | Honnay | 30 september | |||||
| 1999 | Honnay | 13 august | Honnay | 13 august |
