| 2022 | Montagu's Harrier, Pitstone Hill, 12th May, Considered most likely to be this species. |
| 2020 | Montagu's Harrier, Rowsham, 31st July, An immature female. |
| 2012 | Montagu's Harrier, Dorney Common, 23rd September, An male on 23rd Sep. |
| 2008 | Montagu's Harrier, Pitstone Hill, 15th August, Pitstone Hill – A “ringtail” on 15th Aug. |
| 2005 | Montagu's Harrier, South Bucks, 7th May, A male on 7th May. |
| 2005 | Montagu's Harrier, Haversham, 3rd May, A “ringtail” on 3rd May thought to be this species. |
| 1999 | Montagu's Harrier, Broughton, Aylesbury, 2nd September, A probable male over high on 2nd Sep. |
| 1998 | Montagu's Harrier, Drayton Parslow, Recorded in the Bucks Annual Report as Harrier Sp, this bird “Ringtail” bird was considered by the observer to be of this species. |
| 1993 | Montagu's Harrier, Drayton Parslow, A “Ringtail” on 9th & 10th at Drayton Parslow/Newton Longville was probably of this species. |
| 1977 | Montagu's Harrier, Marsworth, Bucks, 26th May, A female on 26th May. |
| 1968 | Montagu's Harrier, Frieth, 24th June, An adult female on 24th June. |
| 1929 | Montagu's Harrier, Black Park, 1 in late April/early May was trapped by the gamekeeper. |