| Red-throated Diver | | |
| Black-throated Diver | | |
| Great Northern Diver | | |
| Little Grebe | | |
| Great Crested Grebe | | |
| Red-necked Grebe | | |
| Slavonian Grebe | | |
| Black-necked Grebe | | |
| Manx Shearwater | | |
| Leach's Petrel | | |
| Gannet | | |
| Cormorant | | |
| Shag | | |
| Bittern | | |
| Night-heron | 23 August 2017 | A sub-adult seen at dusk at Claydon Lakes in company of Tim & Coleen Watts; appeared from roost at 8.32pm and flew right overhead |
| Cattle Egret | | |
| Little Egret | | |
| Great White Egret | | |
| Grey Heron | | |
| Purple Heron | | |
| White Stork | | |
| Glossy Ibis | 22 September 2022 | At long long last and after many attempts, an adult sighted at Manor Farm but at very great distance |
| Spoonbill | | |
| Mute Swan | | |
| Bewick's Swan | | |
| Whooper Swan | | |
| Tundra Bean Goose | | |
| Pink-footed Goose | | |
| White-fronted Goose | | |
| Greylag Goose | | |
| Canada Goose | | |
| Barnacle Goose | | |
| Brent Goose | | |
| Egyptian Goose | | |
| Shelduck | | |
| Mandarin Duck | | |
| Wigeon | | |
| Gadwall | | |
| Teal | | |
| Green-winged Teal | | |
| Mallard | | |
| Pintail | | |
| Garganey | | |
| Blue-winged Teal | 28th March 2022 | A female-type at Marlow Flood Alleviation Pool |
| Shoveler | | |
| Red-crested Pochard | | |
| Pochard | | |
| Ring-necked Duck | | |
| Ferruginous Duck | | |
| Tufted Duck | | |
| Scaup | | |
| Eider | | |
| Long-tailed Duck | | |
| Common Scoter | | |
| Velvet Scoter | 7th November 2016 | Willen Lake South Basin (2 immatures) |
| Goldeneye | | |
| Smew | | |
| Red-breasted Merganser | | |
| Goosander | | |
| Ruddy Duck | | |
| Honey-buzzard | | |
| Red Kite | | |
| White-tailed Eagle | | |
| Marsh Harrier | | |
| Hen Harrier | | |
| Montagu's Harrier | | |
| Goshawk | | |
| Sparrowhawk | | |
| Buzzard | | |
| Rough-legged Buzzard | | |
| Osprey | | |
| Kestrel | | |
| Red-footed Falcon | | |
| Merlin | | |
| Hobby | | |
| Peregrine | | |
| Red-legged Partridge | | |
| Grey Partridge | | |
| Quail | | |
| Pheasant | | |
| Lady Amherst's Pheasant | | |
| Water Rail | | |
| Spotted Crake | | |
| Little Crake | 7/11/2023 | Juvenile at Linford NR |
| Moorhen | | |
| Coot | | |
| Crane | | |
| Oystercatcher | | |
| Black-winged Stilt | | |
| Avocet | | |
| Stone-curlew | | |
| Little Ringed Plover | | |
| Ringed Plover | | |
| Kentish Plover | 1 May 2017 | Female in Pitstone Quarry |
| American Golden Plover | | |
| Golden Plover | | |
| Grey Plover | | |
| Lapwing | | |
| Knot | | |
| Sanderling | | |
| Little Stint | | |
| Temminck's Stint | | |
| White-rumped Sandpiper | 21/7/2022 | Adult on Dorney Common Flood. Thanks to RBA & Birdguides for the tipoff after seeing pix of a 'Dunlin' on the social medium |
| Pectoral Sandpiper | | |
| Curlew Sandpiper | | |
| Purple Sandpiper | | |
| Dunlin | | |
| Ruff | | |
| Jack Snipe | | |
| Snipe | | |
| Woodcock | | |
| Black-tailed Godwit | | |
| Bar-tailed Godwit | | |
| Whimbrel | | |
| Curlew | | |
| Common Sandpiper | | |
| Spotted Sandpiper | | |
| Green Sandpiper | | |
| Spotted Redshank | | |
| Greenshank | | |
| Lesser Yellowlegs | | |
| Wood Sandpiper | | |
| Redshank | | |
| Turnstone | | |
| Wilson's Phalarope | | |
| Red-necked Phalarope | | |
| Grey Phalarope | | |
| Pomarine Skua | | |
| Arctic Skua | | |
| Long-tailed Skua | | |
| Great Skua | | |
| Sabine's Gull | | |
| Kittiwake | | |
| Bonaparte's Gull | 9-10 January | Roosted both evening with Black-headed Gulls at College Lake BBOWT and watched in the company of Dave Bilcock |
| Black-headed Gull | | |
| Little Gull | | |
| Mediterranean Gull | | |
| Common Gull | | |
| Ring-billed Gull | | |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | | |
| Caspian Gull | | |
| Iceland Gull | | |
| Glaucous Gull | | |
| Great Black-backed Gull | | |
| Little Tern | | |
| Caspian Tern | | |
| Whiskered Tern | | |
| Black Tern | | |
| White-winged Black Tern | | |
| Sandwich Tern | | |
| Common Tern | | |
| Arctic Tern | | |
| Little Auk | | |
| Rock Dove / 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 | | |
| Swift | | |
| Kingfisher | | |
| Hoopoe | | |
| Wryneck | | |
| Green Woodpecker | | |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | | |
| Woodlark | | |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Red-rumped Swallow | 27/4/2022 | Spade Oak Pit |
| Richard's Pipit | | |
| Tree Pipit | | |
| Meadow Pipit | | |
| Rock Pipit | | |
| Water Pipit | | |
| Yellow Wagtail | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Waxwing | | |
| Dipper | 14th March 2020 | Unsure if this is my first but certainly a photograph tick - Wycombe Rye |
| Wren | | |
| Dunnock | | |
| Alpine Accentor | 5/5/2024 | Pitstone Quarry! |
| Robin | | |
| Nightingale | | |
| Black Redstart | | |
| Redstart | | |
| Whinchat | | |
| Stonechat | | |
| Wheatear | | |
| Ring Ouzel | | |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | | |
| Cetti's Warbler | | |
| Grasshopper Warbler | | |
| River Warbler | | |
| Sedge Warbler | | |
| Marsh Warbler | ********** | ********** |
| Reed Warbler | | |
| Blackcap | | |
| Garden Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Dartford Warbler | | |
| Yellow-browed Warbler | | |
| Wood Warbler | | |
| Chiffchaff | | |
| Willow Warbler | | |
| Goldcrest | | |
| Firecrest | | |
| Spotted Flycatcher | | |
| Pied Flycatcher | | |
| Bearded Tit | | |
| Long-tailed Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Coal Tit | | |
| Willow Tit | | |
| Marsh Tit | | |
| Nuthatch | | |
| Treecreeper | | |
| Golden Oriole | | |
| Red-backed Shrike | | |
| Great Grey Shrike | | |
| Woodchat Shrike | | |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | | |
| Starling | | |
| House Sparrow | | |
| Tree Sparrow | | |
| Chaffinch | | |
| Brambling | | |
| Greenfinch | | |
| Goldfinch | | |
| Siskin | | |
| Linnet | | |
| Redpoll | | |
| Two-barred Crossbill | | |
| Common Crossbill | | |
| Bullfinch | | |
| Hawfinch | | |
| Lapland Bunting | | |
| Snow Bunting | | |
| Yellowhammer | | |
| Cirl Bunting | | |
| Little Bunting | | |
| Reed Bunting | | |
| Corn Bunting | | |