Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Pointe du Cap-Ferret (33) | 4 September | Pointe du Cap-Ferret (33) | 23 November | |||||
| 2020 | Pointe du Cap-Ferret (33) | 30 August | Pointe du Cap-Ferret (33) | 25 November | |||||
| 2019 | Pointe du Cap-Ferret (33) | 9 September | Pointe du Cap-Ferret (33) | 13 November | |||||
| 2018 | Pointe du Cap-Ferret (33) | 14 September | Pointe du Cap-Ferret (33) | 27 October |
