| 2020 | Moor Green Lakes, 29th April. * |
| 2018 | Lower Farm GP, 12th August. * |
| 2016 | Lea Farm Lake, juvenile, 22nd August. |
| 2014 | Pingewood GPs, summer-plumage, 16th-18th May. |
| 2011 | Queen Mother Reservoir, juvenile, 9th September. |
| 2010 | Queen Mother Reservoir, 8th November. |
| 2008 | Lavell's Lake, winter-plumage adult, 30th August. |
| 2007 | Borough Marsh, juvenile, 1st September. |
| 2007 | Pingewood GPs, 25th August. |
| 2006 | Moor Green Lakes, 8th-14th August. |
| 2005 | Pingewood GPs, summer-plumage, 30th April. |
| 2004 | Woolhampton GPs, summer-plumage, 1st May. |
| 2004 | Moor Green Lakes, summer-plumage, 1st May. |
| 2003 | Theale GPs, 13th August. |
| 2003 | Windsor Great Park, juvenile, 13th-19th August. |
| 2003 | Lavell's Lake, winter-plumage, 15th March. |
| 2002 | Queen Mother Reservoir, juvenile, 21st September. |
| 2001 | Lower Farm GP, three, 24th September. |
| 2001 | Lower Farm GP, juvenile, 9th-18th September. |
| 2001 | Pingewood GPs, 28th August. |
| 2001 | Theale GPs, 25th August. |
| <2000 | Confidential, many records. |