| Book name (en) | The Birds of Great Britain |
| Book volume | Vol.1 |
| Identifier | 1-27 |
| Gould Scientific name | Circus cynerascens |
| Scientific name | Circus pygargus |
| Gould name (en) | Ash-coloured Harrier |
| Name (en) | Montagu's Harrier |
| Order | ACCIPITRIFORMES |
| Family | Accipitridae |
