| 2023 | Ring-necked Duck, Moor Green Lakes, female, 14th January to 17th February. (J Hinsch) |
| 2022 | Ring-necked Duck, Theale GPs, female, 2nd December. (A B Merrick) |
| 2022 | Ring-necked Duck, Moor Green Lakes, female, 14th November to 29th December. (J M Clark) |
| 2021 | Ring-necked Duck, Theale GPs, male, 5th November. (A E D Hickman) |
| 2021 | Ring-necked Duck, Theale GPs, male, 2nd January. (H R Netley) |
| 2018 | Ring-necked Duck, Woolhampton GPs, female, 12th April, same as Lower Farm GP. (K. E. Moore) |
| 2018 | Ring-necked Duck, Lower Farm GP, female, 6th-20th April. (N. Cleere) |
| 2015 | Ring-necked Duck, Bray GPs, male, 25th November to 8th February 2016. (C. D. R. Heard) |
| 2014 | Ring-necked Duck, Bray GPs, drake, 22nd December to 11th February 2015. (C. D. R. Heard) |
| 2007 | Ring-necked Duck, Dorney Wetlands, female, 17th-26th April. (J. O'Brien) |
| 2006 | Ring-necked Duck, Moor Green Lakes, female/immature, 19th November. (J. M. Clark) |
| 2006 | Ring-necked Duck, Theale GPs, male, 24th March to 1st April. (K. E. Moore) |
| 2002 | Ring-necked Duck, Pingewood GPs, male, 13th May to 13th June, presumably the same bird seen again in eclipse plumage on 12th September. (M. G. McCarthy) |
| 2001 | Ring-necked Duck, Burghfield GPs, first-winter female, 23rd November to 20th January 2002. (M. F. Walford) |
| 2001 | Ring-necked Duck, Virginia Water, female/immature, 17th February. |
| 1999 | Ring-necked Duck, Lower Farm GP, female, 26th March to 26th April, two females, 3rd April to 10th April. |
| 1977 | Ring-necked Duck, Theale GPs, male, 24th December to 9th April 1978. |
| 1959 | Ring-necked Duck, Burghfield GPs, male, 19th-27th April. |