| 1997 | Marsh Warbler, Theale GPs, male, 11th-12th June. |
| 1995 | Marsh Warbler, Bray GPs, male, 12th June to 8th July. |
| 1993 | Marsh Warbler, Thatcham Marsh, male, 22nd May to 12th June. |
| 1989 | Marsh Warbler, Dinton Pastures CP, male, 11th June. |
| 1979 | Marsh Warbler, Burghfield GPs, adult, 9th July. |
| 1974 | Marsh Warbler, Burghfield GPs, two adults and one juvenile, 8th August, also adult collecting food 10th August. (J. E. Hunt) |
| 1963 | Marsh Warbler, Thatcham Marsh, male, 23rd June. |
| 1943 | Marsh Warbler, West Berks, 19th June, nest found. |
| 1923 | Marsh Warbler, West Berks, bred. |
| 1918 | Marsh Warbler, Wargrave, 6th July, nest found. |
| 1918 | Marsh Warbler, Pangbourne, 27th May, nest found. |
| 1909 | Marsh Warbler, Wraysbury, 14th June, nest found, 2nd nest found 30th June. |