| Red-throated Diver | 11/11/97 | Bray GP |
| Black-throated Diver | 19/4/08 | QMR |
| Great Northern Diver | 25/2/85 | QMR |
| Little Grebe | | |
| Great Crested Grebe | | |
| Red-necked Grebe | 28/11/02 | Woolhampton GP |
| Slavonian Grebe | 7/10/72 | Horton GP |
| Black-necked Grebe | 25/2/85 | Datchet Common GP |
| Manx Shearwater | 7/9/11 | Horton GP |
| Storm Petrel | 2/12/03 | QMR |
| Leach's Petrel | 30/10/01 | QMR |
| Gannet | 15/5/01 | Colnbrook |
| Cormorant | | |
| Shag | 15/11/85 | Thames at Maidenhead |
| Bittern | 11/2/73 | Great Meadow Pond |
| Cattle Egret | 4/11/16 | QMR |
| Little Egret | | |
| Great White Egret | 24/12/07 | QMR |
| Grey Heron | | |
| Purple Heron | 15/5/84 | Wraysbury GP |
| Glossy Ibis | 22/10/11 | Horton |
| Spoonbill | 10/10/86 | Summerleaze GP |
| Mute Swan | | |
| Bewick's Swan | 7/3/83 | Summerleaze GP |
| Whooper Swan | 22/11/15 | QMR (flock of 5) |
| Bean Goose sp. | 31/12/78 | over Wraysbury GP |
| Tundra Bean Goose | 2/1/07 | Remenham |
| Pink-footed Goose | 24/2/86 | Summerleaze GP |
| White-fronted Goose | 21/12/10 | over Cippenham (flock of 120) |
| Greylag Goose | | |
| Canada Goose | | |
| Barnacle Goose | 25/1/90 | over Horton GP |
| Brent Goose | 32/12/71 | Bray GP |
| Egyptian Goose | | |
| Shelduck | 8/4/71 | Wraysbury GP |
| Mandarin Duck | | |
| Wigeon | | |
| Gadwall | | |
| Teal | | |
| Mallard | | |
| Pintail | 31/12/74 | Horton GP (flock of 28) |
| Garganey | 21/5/72 | QMR |
| Shoveler | | |
| Red-crested Pochard | 24/10/15 | QMR (flock of 6) |
| Pochard | | |
| Ring-necked Duck | 17/1/01 | Virginia Water |
| Ferruginous Duck | 14/10/73 | Wraysbury GP |
| Tufted Duck | | |
| Scaup | 10/2/91 | Thames at Boveney (6) |
| Lesser Scaup | 5/10/08 | Wraysbury GP/QMR |
| Long-tailed Duck | 20/11/85 | Wraysbury GP (2) |
| Common Scoter | 21/1/73 | Virginia Water |
| Velvet Scoter | 1/5/84 | QMR |
| Goldeneye | 24/5/70 | Windsor Gt Park |
| Smew | 8/2/12 | Wraysbury GP (26) |
| Red-breasted Merganser | 5/11/94 | QMR (13) |
| Goosander | | |
| Ruddy Duck | | |
| Honey-buzzard | ********** | ********** |
| Black Kite | 26/6/01 | West Ilsley |
| Red Kite | | |
| Marsh Harrier | 11/5/87 | Slough SF |
| Hen Harrier | 18/1/85 | Wraysbury |
| Montagu's Harrier | ********** | ********** |
| Goshawk | ********** | ********** |
| Sparrowhawk | | |
| Buzzard | | |
| Rough-legged Buzzard | 17/10/73 | Wraysbury |
| Osprey | 7/5/72 | Great Meadow Pond |
| Kestrel | | |
| Red-footed Falcon | 11/6/99 | Horton GP |
| Merlin | 6/12/86 | Summerleaze GP |
| Hobby | | |
| Peregrine | | |
| Red-legged Partridge | | |
| Grey Partridge | | |
| Quail | ********** | ********** |
| Pheasant | | |
| Water Rail | | |
| Spotted Crake | 9/10/00 | Eton Wick |
| Moorhen | | |
| Coot | | |
| Crane | 2/3/03 | over Slough (flock of 9) |
| Great Bustard | 17/11/11 | over QMR |
| Oystercatcher | 15/5/72 | Bray GP |
| Avocet | 22/4/98 | Tickleback Row |
| Stone-curlew | ********** | ********** |
| Little Ringed Plover | ********** | ********** |
| Ringed Plover | 31/5/70 | Ham SF |
| Dotterel | 26/4/13 | Bury Down |
| Golden Plover | 9/12/71 | Fifield (19) |
| Grey Plover | 11/5/94 | Tickleback Row (5) |
| Lapwing | | |
| Knot | 23/10/70 | Bray GP |
| Sanderling | 7/2/91 | Horton GP |
| Little Stint | 27/9/96 | Slough SF (flock of 40) |
| Temminck's Stint | 20/5/72 | Bray GP |
| Pectoral Sandpiper | 5/10/96 | Slough SF |
| Curlew Sandpiper | 6/9/13 | QMR |
| Purple Sandpiper | 26/12/06 | QMR |
| Dunlin | 21/12/74 | QMR (flock of 112) |
| Ruff | 3/12/11 | Borough Marsh (13) |
| Jack Snipe | 22/10/71 | Wraysbury |
| Snipe | | |
| Woodcock | | |
| Black-tailed Godwit | 9/8/72 | Ham SF |
| Bar-tailed Godwit | 28/8/78 | Windsor Gt Park (100+) |
| Whimbrel | 22/4/80 | over Maidenhead |
| Curlew | 8/4/71 | Wraysbury |
| Spotted Redshank | 4/12/92 | Cockmarsh |
| Redshank | | |
| Greenshank | 25/8/70 | Bray GP |
| Green Sandpiper | | |
| Wood Sandpiper | 5/8/71 | Bray GP (3) |
| Common Sandpiper | | |
| Turnstone | 10/1/03 | Widbrook Common |
| Red-necked Phalarope | 8/9/13 | QMR |
| Grey Phalarope | 2/11/05 | QMR |
| Pomarine Skua | 25/4/03 | QMR (flock of 13) |
| Arctic Skua | 22/8/77 | over Maidenhead |
| Long-tailed Skua | 30/8/78 | Wraysbury |
| Great Skua | 24/8/13 | QMR |
| Mediterranean Gull | ********** | ********** |
| Little Gull | 22/4/73 | Thames at Ham Island |
| Sabine's Gull | 29/9/99 | QMR |
| Bonaparte's Gull | 26/4/13 | Theale GP |
| Black-headed Gull | | |
| Ring-billed Gull | 11/4/04 | QMR |
| Common Gull | | |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Caspian Gull | 13/9/98 | Colnbrook |
| Yellow-legged Gull | 17/6/74 | Wraysbury GP |
| Iceland Gull | 11/2/86 | QMR |
| Glaucous Gull | 17/10/71 | Great Meadow Pond |
| Great Black-backed Gull | | |
| Kittiwake | 12/11/72 | Virginia Water |
| Sandwich Tern | 18/5/86 | Summerleaze GP |
| Roseate Tern | 22/5/13 | QMR (2) |
| Common Tern | | |
| Arctic Tern | 7/11/11 | QMR |
| Little Tern | 13/5/88 | Summerleaze GP |
| Black Tern | 24/5/84 | Bray GP |
| Little Auk | 4/11/07 | QMR (flock of 8) |
| Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Collared Dove | | |
| Turtle Dove | | |
| Ring-necked Parakeet | | |
| Cuckoo | | |
| Barn Owl | | |
| Little Owl | | |
| Tawny Owl | | |
| Long-eared Owl | | |
| Short-eared Owl | ********** | ********** |
| Nightjar | 29/5/71 | Windsor Gt Park |
| Swift | | |
| Alpine Swift | 20/3/10 | Borough Marsh |
| Kingfisher | | |
| Hoopoe | 17/4/72 | Bray GP |
| Wryneck | 15/5/84 | Fifield |
| Green Woodpecker | | |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | ********** | ********** |
| Short-toed Lark | 3/1/87 | Slough SF |
| Woodlark | | |
| Skylark | 1/1/79 | Cookham (3,000!) |
| Sand Martin | | |
| Swallow | 1/12/15 | QMR |
| Red-rumped Swallow | 5/5/96 | Bray GP |
| House Martin | | |
| Richard's Pipit | 12/11/11 | Cookham |
| Tree Pipit | | |
| Meadow Pipit | | |
| Rock Pipit | 3/4/79 | Summerleaze GP (littoralis) |
| Water Pipit | 14/4/73 | Slough SF |
| Yellow Wagtail | June 1987 | Summerleaze GP (flava - breeding!) |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Waxwing | 10/2/68 | Cranbourne |
| Wren | | |
| Dunnock | | |
| Robin | | |
| Nightingale | | |
| Black Redstart | ********** | ********** |
| Redstart | 15/4/71 | Windsor Gt Park |
| Whinchat | 30/12/16 | Remenham |
| Stonechat | | |
| Wheatear | | |
| Ring Ouzel | 13/10/73 | Wraysbury GP |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | | |
| Cetti's Warbler | | |
| Grasshopper Warbler | 8/5/71 | Windsor Gt Park |
| Sedge Warbler | | |
| Reed Warbler | | |
| Dartford Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Garden Warbler | | |
| Blackcap | | |
| Wood Warbler | 29/4/88 | Summerleaze GP (migrant) |
| Chiffchaff | 10/1/75 | Wraysbury GP (tristis) |
| Willow Warbler | 13/12/92 | Summerleaze GP |
| Goldcrest | | |
| Firecrest | ********** | ********** |
| Spotted Flycatcher | | |
| Pied Flycatcher | 30/8/85 | Summerleaze GP |
| Bearded Tit | 25/11/71 | Bray GP |
| Long-tailed Tit | | |
| Marsh Tit | | |
| Willow Tit | | ********** |
| Coal Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Nuthatch | | |
| Treecreeper | | |
| Golden Oriole | 2/7/13 | Wraysbury |
| Red-backed Shrike | 19/9/86 | Wraysbury GP |
| Great Grey Shrike | 20/10/14 | Colnbrook |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | 18/10/07 | Remenham Hill |
| Starling | | |
| House Sparrow | | |
| Tree Sparrow | 9/2/83 | Maidenhead (c100) |
| Chaffinch | | |
| Brambling | 20/10/10 | over QMR (single sp flock of 125) |
| Serin | 13/1/15 | Horton GP |
| Greenfinch | | |
| Goldfinch | | |
| Siskin | | |
| Linnet | | |
| Twite | 18/11/06 | Slough SF/Cippenham |
| Mealy Redpoll | 29/12/75 | Horton (2) |
| Lesser Redpoll | | |
| Common Crossbill | 18/7/72 | over Datchet |
| Bullfinch | | |
| Hawfinch | ********** | ********** |
| Lapland Bunting | 1/1/79 | Summerleaze GP |
| Snow Bunting | 11/2/85 | Cippenham |
| Yellowhammer | | |
| Little Bunting | 18/1/87 | Datchet Common GP |
| Reed Bunting | | |
| Corn Bunting | | |