Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Manton/Martinsthorpe, Rutland (Leics, England) | 26 June | Manton/Martinsthorpe, Rutland (Leics, England) | 7 October | |||||
| 2020 | Manton/Martinsthorpe, Rutland (Leics, England) | 6 August | Manton/Martinsthorpe, Rutland (Leics, England) | 6 October | |||||
| 2019 | Manton/Martinsthorpe, Rutland (Leics, England) | 3 April | Manton/Martinsthorpe, Rutland (Leics, England) | 19 October | |||||
| 2018 | Manton/Martinsthorpe, Rutland (Leics, England) | 19 September | Manton/Martinsthorpe, Rutland (Leics, England) | 9 October |
