| Brent Goose | 17/3/05 | Main Pit, Theale |
| Canada Goose | | |
| Barnacle Goose | | |
| Greylag Goose | | |
| Pink-footed Goose | 16/1/09 | Streatley |
| Tundra Bean Goose | 3/1/07 | Remenham |
| White-fronted Goose | 15/2/10 | Charvil |
| Mute Swan | | |
| Bewick's Swan | 3/1/07 | Remenham |
| Whooper Swan | 18/2/13 | Lower Padworth |
| Egyptian Goose | | Whiteknights Lake |
| Shelduck | | |
| Mandarin Duck | | |
| Garganey | ********** | ********** |
| Shoveler | | |
| Gadwall | | |
| Wigeon | | |
| American Wigeon | 23/1/09 | Lower Farm |
| Mallard | | |
| Pintail | 3/2/05 | Wraysbury GPs |
| Teal | | (Green-winged Teal 25/11/01 Moor Green Lakes) |
| Red-crested Pochard | | Hosehill |
| Pochard | | |
| Ferruginous Duck | 4/11/02 | Old Slade GP |
| Ring-necked Duck | 13/5/02 | Burnthouse Lane GP |
| Tufted Duck | | |
| Scaup | 10/12/02 | Horton GP |
| Lesser Scaup | 1/11/07 | Woolhampton GP |
| Velvet Scoter | 31/12/10 | QMR |
| Common Scoter | 19/2/03 | Jubilee River |
| Long-tailed Duck | 15/11/09 | Moatlands GP |
| Goldeneye | | |
| Smew | 14/11/02 | Old Slade GP |
| Goosander | | |
| Red-breasted Merganser | 24/4/14 | QMR |
| Ruddy Duck | ********** | ********** |
| Grey Partridge | | |
| Pheasant | | |
| Quail | ********** | ********** |
| Red-legged Partridge | | |
| Nightjar | | Hut Hill |
| Swift | | |
| Cuckoo | | |
| Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Turtle Dove | | ********** |
| Collared Dove | | |
| Water Rail | | |
| Spotted Crake | 5/9/02 | Lavell's Lake LNR |
| Moorhen | | |
| Coot | | |
| Little Grebe | | |
| Red-necked Grebe | 10/3/04 | Wraysbury GP |
| Great Crested Grebe | | |
| Slavonian Grebe | 20/12/02 | QMR |
| Black-necked Grebe | 5/9/05 | Moatlands |
| Stone-curlew | | ********** |
| Oystercatcher | 3/6/04 | Dorney Wetlands |
| Black-winged Stilt | 11/9/19 | Moor Green Lakes |
| Avocet | 31/3/08 | Main Pit, Theale |
| Grey Plover | 28/12/07 | Dorney Wetlands |
| Golden Plover | | |
| Dotterel | 18/5/04 | Bury Down |
| Ringed Plover | | |
| Little Ringed Plover | | |
| Lapwing | | |
| Whimbrel | 1/5/11 | QMR |
| Curlew | | |
| Bar-tailed Godwit | 29/4/07 | Hosehill LNR |
| Black-tailed Godwit | 19/5/04 | Dorney Wetlands |
| Jack Snipe | 7/11/03 | Lavell's Lake |
| Woodcock | | |
| Snipe | | |
| Grey Phalarope | 16/11/03 | QMR |
| Red-necked Phalarope | 31/5/15 | Theale Main Pit |
| Common Sandpiper | | |
| Green Sandpiper | | |
| Wood Sandpiper | 18/8/03 | Dorney Wetlands |
| Redshank | | |
| Spotted Redshank | 16/5/14 | Burnthouse Lane |
| Greenshank | | |
| Turnstone | 30/4/05 | Dorney Wetlands |
| Knot | 17/10/03 | QMR |
| Ruff | | |
| Curlew Sandpiper | 12/5/05 | Dorney Wetlands |
| Temminck's Stint | 28/5/10 | Hosehill LNR |
| Sanderling | 18/5/11 | QMR |
| Dunlin | | |
| Purple Sandpiper | 20/11/15 | QMR |
| Little Stint | 14/8/07 | Moor Green Lakes |
| Pectoral Sandpiper | 3/11/03 | Moor Green Lakes |
| Little Tern | 7/5/17 | BSL, Dinton Pastures |
| Whiskered Tern | 21/5/05 | Moor Green Lakes |
| Black Tern | | |
| White-winged Black Tern | 09/09/24 | Hosehill |
| Arctic Tern | | BSL, Dinton Pastures |
| Common Tern | | |
| Roseate Tern | 9/5/11 | QMR |
| Sandwich Tern | 30/6/15 | Hosehill |
| Little Gull | | QMR |
| Kittiwake | 10/2/20 | Lower Farm |
| Bonaparte's Gull | 26/4/13 | Hosehill |
| Black-headed Gull | | |
| Laughing Gull | 24/12/05 | Moatlands GP |
| Mediterranean Gull | ********** | ********** |
| Common Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | 16/10/03 | Old Slade GP |
| Great Black-backed Gull | | |
| Glaucous Gull | 3/2/12 | Knowl Hill Landfill |
| Lesser Black-backed Gull | | |
| Iceland Gull | 17/3/14 | Compton |
| Long-tailed Skua | 10/9/06 | QMR |
| Pomarine Skua | 21/11/07 | QMR |
| Great Skua | 23/9/04 | QMR |
| Red-throated Diver | 21/2/03 | QMR |
| Black-throated Diver | 15/1/13 | QMR |
| Great Northern Diver | | QMR |
| Storm Petrel | 2/12/03 | QMR |
| Leach's Petrel | 9/11/05 | QMR |
| Manx Shearwater | 17/9/11 | QMR |
| White Stork | 24/4/14 | Spencers Wood |
| Gannet | 3/7/04 | BSL, Dinton Pastures |
| Cormorant | | |
| Shag | 10/8/05 | QMR |
| Glossy Ibis | 10/12/10 | Freeman's Marsh |
| Spoonbill | 12/11/03 | QMR |
| Bittern | | Lavell's Lake |
| Night-heron | 21/8/20 | Sandford Lake, Dinton Pastures |
| Little Egret | | |
| Great White Egret | 21/12/10 | Great Shefford |
| Cattle Egret | ********** | ********** |
| Grey Heron | | |
| Sparrowhawk | | |
| Marsh Harrier | 27/3/13 | Moor Green Lakes |
| Hen Harrier | 3/1/08 | Bury Down |
| Red Kite | | |
| Buzzard | | |
| Barn Owl | | |
| Little Owl | | |
| Long-eared Owl | | ********** |
| Short-eared Owl | | ********** |
| Tawny Owl | | |
| Hoopoe | 30/3/05 | Berkshire Brewery |
| Kingfisher | | |
| Wryneck | 29/8/12 | Lavell's Lake |
| Lesser Spotted Woodpecker | ********** | ********** |
| Great Spotted Woodpecker | | |
| Green Woodpecker | | |
| Kestrel | | |
| Red-footed Falcon | 7/7/03 | Burnthouse Lane GP |
| Merlin | 18/11/04 | Cold Harbour |
| Hobby | | Lavell's Lake LNR |
| Peregrine | ********** | ********** |
| Ring-necked Parakeet | | Wraysbury |
| Great Grey Shrike | 2/3/04 | Cow Down |
| Red-backed Shrike | 22/8/02 | Slough SF |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | (Hooded Crow 9/5/21 Lea Farm Lake) |
| Raven | 14/5/11 | Combe |
| Waxwing | | |
| Coal Tit | | |
| Marsh Tit | | |
| Willow Tit | ********** | ********** |
| Blue Tit | | |
| Great Tit | | |
| Bearded Tit | 6/1/11 | Dorney Wetlands |
| Woodlark | | |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Cetti's Warbler | | Thatcham Marsh |
| Long-tailed Tit | | |
| Wood Warbler | 1/5/2019 | Dinton Pastures |
| Yellow-browed Warbler | 17/10/13 | Dinton Pastures |
| Pallas's Warbler | 7/1/13 | Moor Green Lakes |
| Willow Warbler | | |
| Chiffchaff | | |
| Great Reed Warbler | 22/5/14 | Green Park |
| Sedge Warbler | | |
| Reed Warbler | | |
| Grasshopper Warbler | 21/4/04 | Lea Farm GP |
| 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 | 12/4/07 | Twyford GP |
| Spotted Flycatcher | | |
| Robin | | |
| Nightingale | | |
| Black Redstart | ********** | ********** |
| Redstart | | |
| Whinchat | 22/8/02 | Slough SF |
| Stonechat | | |
| Wheatear | | |
| Dipper | 30/12/10 | Welford |
| Tree Sparrow | 5/1/11 | Remenham |
| House Sparrow | | |
| Dunnock | | |
| Yellow Wagtail | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Meadow Pipit | | |
| Tree Pipit | | |
| Buff-bellied Pipit | 14/12/12 | QMR |
| Water Pipit | 19/11/12 | QMR |
| Rock Pipit | 19/10/10 | QMR |
| Chaffinch | | |
| Brambling | | |
| Hawfinch | 13/1/13 | Combe Wood |
| Bullfinch | | |
| Greenfinch | | |
| Linnet | | |
| Lesser Redpoll | | (Mealy Redpoll 16/1/06 Sonning) |
| Parrot Crossbill | 28/11/2017 | Wishmoor Bottom |
| Crossbill | 17/5/10 | Hut Hill |
| Goldfinch | | |
| Siskin | | |
| Snow Bunting | 2/12/03 | QMR |
| Corn Bunting | | |
| Yellowhammer | | |
| Reed Bunting | | |