Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2020 | Stonar, Kent (nocturnal flight calls) | 26 March | Stonar, Kent (nocturnal flight calls) | 8 November | |||||
| 2019 | Stonar, Kent (nocturnal flight calls) | 3 April | Stonar, Kent (nocturnal flight calls) | 29 October | |||||
| 2018 | Stonar, Kent (nocturnal flight calls) | 11 March | Stonar, Kent (nocturnal flight calls) | 22 November | |||||
| 2017 | Stonar, Kent (nocturnal flight calls) | 22 August | Stonar, Kent (nocturnal flight calls) | 28 October |
