Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Pointe du Cap-Ferret (33) | 31 August | Pointe du Cap-Ferret (33) | 13 October | |||||
| 2020 | Pointe du Cap-Ferret (33) | 6 September | Pointe du Cap-Ferret (33) | 22 October | |||||
| 2019 | Pointe du Cap-Ferret (33) | 1 September | Pointe du Cap-Ferret (33) | 26 October | |||||
| 2018 | Pointe du Cap-Ferret (33) | 30 August | Pointe du Cap-Ferret (33) | 17 October |
