Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2019 | Honnay | 27 august | Honnay | 2 october | |||||
| 2018 | Honnay | 29 september | Honnay | 29 september | |||||
| 2017 | Honnay | 24 august | Honnay | 15 september | |||||
| 2016 | Honnay | 3 september | Honnay | 30 october | |||||
| 2014 | Honnay | 24 august | Honnay | 24 august | |||||
| 2008 | Honnay | 6 september | Honnay | 6 september | |||||
| 2007 | Honnay | 23 september | Honnay | 23 september | |||||
| 2001 | Honnay | 27 august | Honnay | 12 october |
