| 2022 | Shag, Moor Green Lakes, 4th September. * |
| 2021 | Shag, Theale GPs, 18th September. (K E Moore) |
| 2019 | Shag, Queen Mother Reservoir, four first-winters, 17th December. (C D R Heard) |
| 2019 | Shag, Theale GPs, 21st-27th November. (K E Moore) |
| 2019 | Shag, Lavell's Lake, 2, 15th April. * |
| 2019 | Shag, Theale GPs, 2, 5th February. (K E Moore) |
| 2017 | Shag, Theale GPs, three, 28th August to 11th September. |
| 2013 | Shag, Old Slade GP, juvenile, 18th-20th November. (C D R Heard) |
| 2013 | Shag, Queen Mother Reservoir, two juveniles, 5th-22nd November. (C D R Heard) |
| 2012 | Shag, Wraysbury GPs, adult, 14th April. (C D R Heard) |
| 2011 | Shag, Queen Mother Reservoir, juvenile, 3rd-22nd December. (C D R Heard) |
| 2011 | Shag, Queen Mother Reservoir, three juveniles, 17th September to 1st October, three 17th-18th September, two until 30th September, one 1st October. (C D R Heard) |
| 2009 | Shag, Theale GPs, first-winter, 2nd September. (K E Moore) |
| 2009 | Shag, Lower Farm GP, first-winter, 25th January. (N Cleere, J Legg, I Weston) |
| 2008 | Shag, Theale GPs, two juveniles, 31st August to 1st September. (M F Walford) |
| 2008 | Shag, Queen Mother Reservoir, 20th-28th August, two on 20th, one 26th and 28th. (M J McKee, A B Tomczynski) |
| 2007 | Shag, Queen Mother Reservoir, juvenile, 11th December to 11th February 2008. (C D R Heard) |
| 2005 | Shag, Queen Mother Reservoir, juvenile, 2nd August to 5th November. (C D R Heard) |
| 2001 | Shag, Windsor, first year, 28th February to 6th May. (P K Dwyer) |
| 2000 | Shag, Queen Mother Reservoir, three, 16th November to 16th December, immature 16th November, two 24th, three (immature, juvenile, one over) 26th, two (immature, juvenile) 28th, one (immature) 16th December. (C D R Heard) |
| 2000 | Shag, Queen Mother Reservoir, two, 13th November to 14th December, one on 13th November, two on 14th December. (J A Simpson) |
| 2000 | Shag, Queen Mother Reservoir, two immatures, 7th September to 27th October, two seen only on 16th September. (J A Simpson) |
| <2000 | Shag, Confidential. |
