Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2022 |  |
Station du Fort Vert (62) | 10 April | |
Station du Fort Vert (62) | 10 April | |||
| 2018 | |
Station du Fort Vert (62) | 19 April | |
Station du Fort Vert (62) | 19 April | |||
| 2016 | |
Station du Fort Vert (62) | 21 April | |
Station du Fort Vert (62) | 22 October | |||
| 2013 | |
Station du Fort Vert (62) | 25 October | |
Station du Fort Vert (62) | 25 October |
