| Brent Goose | 17/03/2005 | Theale GP |
| Canada Goose | | |
| Barnacle Goose | 04/12/2020 | Temple (Beds Cat C bird red S/K) |
| Greylag Goose | | |
| Pink-footed Goose | 18/01/2009 | Streatley |
| Tundra Bean Goose | 15/03/1997 | Theale |
| White-fronted Goose | 14/02/2010 | Borough Marsh |
| Mute Swan | | |
| Bewick's Swan | 05/12/2010 | Cock Marsh |
| Whooper Swan | 19/02/2013 | Padworth Lane GP |
| Egyptian Goose | | |
| Shelduck | | |
| Mandarin Duck | | |
| Garganey | 17/08/1989 | Lavell's Lake |
| Shoveler | | |
| Gadwall | | |
| Wigeon | | |
| American Wigeon | 23/11/2008 | Lower Farm GP |
| Mallard | | |
| Pintail | | |
| Teal | | |
| Green-winged Teal | 13/01/2002 | Moor Green |
| Red-crested Pochard | 18/12/1988 | Hurst Green GP |
| Pochard | | |
| Ferruginous Duck | 27/01/2002 | Burghfield GP |
| Ring-necked Duck | 25/03/2006 | Theale GP |
| Tufted Duck | | |
| Scaup | 12/11/1985 | Black Swan, DP |
| Lesser Scaup | 03/11/2007 | Woolhampton GP |
| Eider | 22/04/2003 | Lea Farm GP |
| Velvet Scoter | 16/01/2008 | QMR |
| Common Scoter | 17/07/1989 | White Swan, DP |
| Long-tailed Duck | 03/01/1999 | Wigmore Lane |
| Goldeneye | 12/11/1985 | Black Swan, DP |
| Smew | | |
| Goosander | | |
| Red-breasted Merganser | 18/02/2019 | Hurst Green GP |
| Ruddy Duck | | |
| Grey Partridge | | |
| Pheasant | | |
| Quail | ********** | ********** |
| Red-legged Partridge | | |
| Nightjar | 14/05/1988 | Wishmoor |
| Alpine Swift | 15/04/2006 | Maidenhead |
| Swift | | |
| Cuckoo | | |
| Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Turtle Dove | | |
| Collared Dove | | |
| Water Rail | 28/12/1988 | Wraysbury GP |
| Corncrake | 27/06/2008 | Hurst |
| Spotted Crake | 27/09/1987 | Lavell's Lake |
| Moorhen | | |
| Coot | | |
| Crane | 11/05/2010 | Cold Harbour |
| Little Grebe | | |
| Red-necked Grebe | 06/11/1988 | Black Swan, DP |
| Great Crested Grebe | | |
| Slavonian Grebe | 17/12/2004 | Moor Green |
| Black-necked Grebe | 12/11/1985 | Black Swan, DP |
| Stone-curlew | ********** | ********** |
| Oystercatcher | 07/01/1989 | Black Swan, DP |
| Black-winged Stilt | 11/09/2019 | Moor Green |
| Avocet | 31/03/2008 | Theale GP |
| Grey Plover | 15/04/1989 | Whistley Mill GP |
| Golden Plover | 30/12/1992 | Wokingham |
| Dotterel | 17/05/2004 | Bury Down |
| Ringed Plover | | |
| Little Ringed Plover | | |
| Lapwing | | |
| Whimbrel | 14/05/2004 | Black Swan, DP |
| Curlew | | |
| Bar-tailed Godwit | 14/05/1988 | Moatlands GP |
| Black-tailed Godwit | 11/05/1991 | QMR |
| Jack Snipe | 06/11/1988 | Sandford, DP |
| Woodcock | | |
| Snipe | | |
| Grey Phalarope | 15/11/2003 | QMR |
| Red-necked Phalarope | 31/05/2015 | Theale GP |
| Common Sandpiper | | |
| Spotted Sandpiper | 24/05/2024 | QMR |
| Green Sandpiper | | |
| Wood Sandpiper | 27/05/1991 | Lavell's Lake |
| Redshank | | |
| Spotted Redshank | 30/08/2008 | Lavell's Lake |
| Greenshank | | |
| Turnstone | 13/05/1988 | Lavell's Lake |
| Knot | | |
| Ruff | | |
| Curlew Sandpiper | 13/09/2004 | Burnthouse Lane GP |
| Temminck's Stint | 14/05/1988 | Field Farm GP |
| Sanderling | 13/05/1988 | Sandford Lake, DP |
| Dunlin | | |
| Purple Sandpiper | 08/11/2011 | QMR |
| Little Stint | 22/07/1989 | Twyford GP |
| Pectoral Sandpiper | 13/05/1989 | Theale GP |
| Little Tern | 15/04/2003 | Black Swan, DP |
| Whiskered Tern | 22/05/2005 | Moor Green |
| Black Tern | 28/04/1984 | Black Swan, DP |
| White-winged Black Tern | 10/09/2024 | Hosehill Lake, Theale |
| Arctic Tern | 26/08/1989 | Black Swan, DP |
| Common Tern | | |
| Roseate Tern | 10/05/2011 | QMR |
| Sandwich Tern | 01/09/2008 | Moatlands GP |
| Little Gull | 02/09/1987 | Lavell's Lake |
| Kittiwake | 31/03/2006 | Theale GP |
| Bonaparte's Gull | 26/04/2013 | Hosehill |
| Black-headed Gull | | |
| Laughing Gull | 03/12/2005 | Smallmead GP |
| Mediterranean Gull | ********** | ********** |
| Common Gull | | |
| Caspian Gull | 06/11/2018 | QMR |
| Herring Gull | | |
| Yellow-legged Gull | 16/07/2004 | Lavell's Lake |
| Great Black-backed Gull | | |
| Glaucous Gull | 01/02/2012 | Knowl Hill Landfill |
| Lesser Black-backed Gull | | |
| Iceland Gull | 17/03/2011 | Cock Marsh |
| Long-tailed Skua | 09/09/2006 | QMR |
| Pomarine Skua | 21/11/2007 | QMR |
| Great Skua | 23/09/2004 | QMR |
| Red-throated Diver | 23/12/1997 | Twyford GP |
| Black-throated Diver | 19/04/1987 | Wraysbury GP |
| Great Northern Diver | 28/12/1993 | Thatcham |
| Storm Petrel | 02/12/2003 | QMR |
| Leach's Petrel | 09/11/2005 | QMR |
| Manx Shearwater | 17/09/2011 | QMR |
| White Stork | 01/04/2004 | Dorney Wetlands |
| Gannet | 03/07/2004 | Black Swan, DP |
| Cormorant | | |
| Shag | 23/04/1992 | Boulter's Lock |
| Glossy Ibis | 10/12/2010 | Freeman's Marsh |
| Spoonbill | 12/11/2003 | QMR |
| Bittern | 14/03/1999 | Lavell's Lake |
| Night-heron | 19/08/2020 | Sandford Lake, DP |
| Little Egret | ********** | ********** |
| Great White Egret | 24/12/2010 | Great Shefford |
| Cattle Egret | ********** | ********** |
| Grey Heron | | |
| Osprey | 13/04/1988 | Twyford GP |
| Honey-buzzard | ********** | ********** |
| Booted Eagle | 02/11/2024 | Remenham - pending |
| Sparrowhawk | | |
| Goshawk | ********** | ********** |
| Marsh Harrier | | |
| Hen Harrier | 02/01/2008 | Bury Down |
| Montagu's Harrier | ********** | ********** |
| Red Kite | | |
| Buzzard | | |
| Barn Owl | | |
| Little Owl | | |
| Long-eared Owl | ********** | ********** |
| Short-eared Owl | | |
| Tawny Owl | | |
| Hoopoe | 08/10/1995 | Moor Green |
| Kingfisher | | |
| Wryneck | 01/09/1987 | Whistley Mill GP |
| Lesser Spotted Woodpecker | | |
| Great Spotted Woodpecker | | |
| Green Woodpecker | | |
| Kestrel | | |
| Red-footed Falcon | 12/06/1999 | Horton GP |
| Merlin | 13/01/2002 | Cold Harbour |
| Hobby | 01/09/1987 | Dinton Pastures |
| Peregrine | ********** | ********** |
| Ring-necked Parakeet | 14/05/1988 | Wraysbury |
| Great Grey Shrike | 12/1980 | Dinton Pastures |
| Red-backed Shrike | 23/09/2013 | Greenham Common |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Hooded Crow | 09/05/2021 | Lines Road, Hurst/Lea Farm |
| Raven | 17/03/2005 | Combe Gibbet |
| Waxwing | 17/12/1988 | Cippenham |
| Coal Tit | | |
| Marsh Tit | | |
| Willow Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Bearded Tit | 04/01/2004 | Burghfield Mill |
| Woodlark | ********** | ********** |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Red-rumped Swallow | 08/05/1999 | Hosehill |
| Cetti's Warbler | | |
| Long-tailed Tit | | |
| Wood Warbler | 14/05/1988 | Caesar's Camp |
| Yellow-browed Warbler | 24/10/2018 | Dinton Pastures |
| Pallas's Warbler | 08/01/2013 | Moor Green |
| Willow Warbler | | |
| Chiffchaff | | |
| Great Reed Warbler | 22/05/2014 | Green Park |
| Sedge Warbler | | |
| Reed Warbler | | |
| Marsh Warbler | 11/06/1989 | Lavell's Lake |
| Grasshopper Warbler | | |
| Blackcap | | |
| Garden Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Dartford Warbler | ********** | ********** |
| Firecrest | ********** | ********** |
| Goldcrest | | |
| Wren | | |
| Nuthatch | | |
| Treecreeper | | |
| Rose-coloured Starling | 28/10/2019 | Calcot |
| Starling | | |
| Song Thrush | | |
| Mistle Thrush | | |
| Redwing | | |
| Blackbird | | |
| Fieldfare | | |
| Ring Ouzel | 15/04/2006 | Streatley Warren |
| Black-throated Thrush | 03/01/1999 | Woodlands Park |
| Spotted Flycatcher | | |
| Robin | | |
| Nightingale | 13/05/1988 | Dinton Pastures |
| Bluethroat | 09/04/2009 | Woolhampton GP |
| Pied Flycatcher | 17/04/2004 | Theale GP |
| Black Redstart | ********** | ********** |
| Redstart | 22/04/1987 | Middle Marsh, DP |
| Whinchat | 17/09/1986 | Black Swan GC |
| Stonechat | | |
| Wheatear | | |
| Dipper | 24/12/2010 | Welford |
| Tree Sparrow | | |
| House Sparrow | | |
| Dunnock | | |
| Yellow Wagtail | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Meadow Pipit | | |
| Tree Pipit | | |
| Buff-bellied Pipit | 13/12/2012 | QMR |
| Water Pipit | 17/01/2005 | Bottom Lane |
| Rock Pipit | 16/09/2014 | QMR |
| Chaffinch | | |
| Brambling | | |
| Hawfinch | 24/12/1990 | Virginia Water |
| Bullfinch | | |
| Greenfinch | | |
| Linnet | | |
| Lesser Redpoll | | (Mealy Redpoll 03/03/2009 Padworth Lane GP) |
| Parrot Crossbill | 27/11/2017 | Wishmoor Bottom |
| Crossbill | | |
| Goldfinch | | |
| Siskin | | |
| Lapland Bunting | 22/10/2007 | Remenhem Hill |
| Snow Bunting | 02/12/2003 | QMR |
| Corn Bunting | | |
| Yellowhammer | | |
| Reed Bunting | | |