Phenology
| Year | Migration site | First | Migration site | Last | |||||
|---|---|---|---|---|---|---|---|---|---|
| 2021 | Manton/Martinsthorpe, Rutland (Leics, England) | 16 September | Manton/Martinsthorpe, Rutland (Leics, England) | 10 November | |||||
| 2020 | Manton/Martinsthorpe, Rutland (Leics, England) | 16 March | Manton/Martinsthorpe, Rutland (Leics, England) | 30 December | |||||
| 2019 | Manton/Martinsthorpe, Rutland (Leics, England) | 20 March | Manton/Martinsthorpe, Rutland (Leics, England) | 15 November | |||||
| 2018 | Manton/Martinsthorpe, Rutland (Leics, England) | 28 September | Manton/Martinsthorpe, Rutland (Leics, England) | 22 November |
