Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Manton/Martinsthorpe, Rutland (Leics, England) | 23 February | Manton/Martinsthorpe, Rutland (Leics, England) | 19 September | |||||
| 2020 | Manton/Martinsthorpe, Rutland (Leics, England) | 31 July | Manton/Martinsthorpe, Rutland (Leics, England) | 24 October | |||||
| 2019 | Manton/Martinsthorpe, Rutland (Leics, England) | 29 July | Manton/Martinsthorpe, Rutland (Leics, England) | 2 December | |||||
| 2018 | Manton/Martinsthorpe, Rutland (Leics, England) | 20 September | Manton/Martinsthorpe, Rutland (Leics, England) | 18 November |
