| Red-throated Diver | 16/12/1990 | Little Marlow GP |
| Black-throated Diver | 13/11/1980 | Marlow GP |
| Great Northern Diver | 01/01/1987 | Taplow GP |
| Little Grebe | | |
| Great Crested Grebe | | |
| Red-necked Grebe | 27/02/1979 | Marlow GP |
| Slavonian Grebe | 01/12/1996 | Little Marlow GP |
| Black-necked Grebe | ********** | ********** |
| Leach's Petrel | 10/09/2001 | Calvert |
| Gannet | 2016 | Dorney Lake |
| Cormorant | | |
| Shag | 31/12/1989 | Marlow GP |
| Bittern | ********** | ********** |
| Night-heron | 24/08/2017 | Claydon Lakes |
| Cattle Egret | 19/05/2012 | Manor Farm |
| Little Egret | 06/07/1995 | Little Marlow GP |
| Great White Egret | 14/03/2015 | Little Marlow GP |
| Grey Heron | | |
| Purple Heron | 11/2006 | Latimer |
| White Stork | 29/5/96 | Dundridge Manor |
| Glossy Ibis | 07/05/2011 | Dorney Lake |
| Spoonbill | 13/05/2014 | Little Marlow GP |
| Mute Swan | | |
| Bewick's Swan | 04/11/1991 | Little Marlow GP |
| Whooper Swan | 09/01/1977 | Cookham (Bucks side) |
| Tundra Bean Goose | 01/01/1997 | College Lake |
| Pink-footed Goose | | |
| White-fronted Goose | 27/05/1989 | Little Marlow GP |
| Greylag Goose | | |
| Canada Goose | | |
| Barnacle Goose | 23/03/1987 | Little Marlow GP |
| Brent Goose | 13/11/1983 | Little Marlow GP |
| Egyptian Goose | | |
| Shelduck | | |
| Mandarin Duck | | |
| Wigeon | | |
| Gadwall | | |
| Teal | | |
| Mallard | | |
| Pintail | | |
| Garganey | ********** | ********** |
| Shoveler | | |
| Red-crested Pochard | 08/02/1987 | Little Marlow GP |
| Pochard | | |
| Ring-necked Duck | 1973/1974 | Marlow GP |
| Ferruginous Duck | 03/12/1989 | Little Marlow GP |
| Tufted Duck | | |
| Scaup | 27/01/1987 | Little Marlow GP |
| Eider | 9/05/2025 | Calvert Sailing Lake |
| Long-tailed Duck | 20/05/1989 | Marsworth Res |
| Common Scoter | 12/10/1997 | Calvert |
| Velvet Scoter | 2016 | Willen Lake |
| Goldeneye | | |
| Smew | 24/03/1979 | Little Marlow GP |
| Red-breasted Merganser | 24/01/1995 | Thorney CP |
| Goosander | | |
| Ruddy Duck | | |
| Honey-buzzard | 21/05/1995 | Northend |
| Red Kite | | |
| White-tailed Eagle | 22/01/1984 | Brill |
| Marsh Harrier | 13/05/1995 | Northend |
| Hen Harrier | 23/01/1977 | Winchbottom |
| Montagu's Harrier | 30/6/25 | Cheddington |
| Goshawk | ********** | ********** |
| Sparrowhawk | | |
| Buzzard | 06/05/1976 | Cressex |
| Osprey | 12/10/1991 | Willen Lake |
| Kestrel | | |
| Red-footed Falcon | 21/05/2012 | Jubilee River |
| Merlin | | |
| Hobby | | |
| Peregrine | | |
| Red-legged Partridge | | |
| Grey Partridge | | |
| Quail | 01/07/1986 | Lower Winchenden |
| Pheasant | | |
| Lady Amherst's Pheasant | 14/05/1988 | Wavenden Woods |
| Water Rail | | |
| Spotted Crake | 19/08/1995 | Willen Lake |
| Little Crake | 7/11/2023 | Linford Reserve |
| Moorhen | | |
| Coot | | |
| Crane | 29/04/1999 | Broughton Trout Pools |
| Oystercatcher | | |
| Black-winged Stilt | 10/06/1988 | Willen Lake |
| Avocet | 24/03/2002 | Little Marlow GP |
| Stone-curlew | 01/05/2004 | College Lake |
| Little Ringed Plover | | |
| Ringed Plover | | |
| Kentish Plover | 01/05/2017 | Pitstone |
| Dotterel | 11/05/1996 | Drayton Parslow |
| American Golden Plover | 16/11/1991 | Broughton; M. Keynes |
| Golden Plover | | |
| Grey Plover | 10/05/2008 | Linford |
| Lapwing | | |
| Knot | 15/03/1990 | Little Marlow GP |
| Sanderling | 20/05/1999 | Little Marlow GP |
| Little Stint | 10/06/1988 | Willen Lake |
| Temminck's Stint | 18/05/1996 | Willen Lake |
| White-rumped Sandpiper | 21 Jul | Dorney Common |
| Pectoral Sandpiper | 19/10/1998 | Little Marlow GP |
| Curlew Sandpiper | 17/09/1988 | Little Marlow GP |
| Purple Sandpiper | 19/10/1997 | Thorney Country Park |
| Dunlin | | |
| Ruff | 20/05/1989 | Willen Lake |
| Jack Snipe | 25/11/1990 | Calvert |
| Snipe | | |
| Woodcock | 11/05/1978 | Warren Wood |
| Black-tailed Godwit | | |
| Bar-tailed Godwit | 16/04/1988 | Little Marlow GP |
| Whimbrel | | |
| Curlew | | |
| Common Sandpiper | | |
| Green Sandpiper | | |
| Spotted Redshank | 14/05/1988 | Willen Lake |
| Greenshank | | |
| Lesser Yellowlegs | 05/05/2014 | College Lake |
| Wood Sandpiper | 02/08/1980 | Hedgerley GP |
| Redshank | | |
| Turnstone | 20/07/1995 | Willen Lake |
| Wilson's Phalarope | 27/05/2006 | Hillesden Pools |
| Red-necked Phalarope | 07/06/2020 | Little Marlow GP |
| Grey Phalarope | 03/09/2008 | Weston Turville Reservoir |
| Long-tailed Skua | 16/10/1982 | Little Chalfont |
| Great Skua | 01/01/1995 | Little Marlow GP |
| Sabine's Gull | 26/09/1997 | Little Marlow GP |
| Kittiwake | 20/09/1987 | Little Marlow GP |
| Bonaparte's Gull | 2015 | College Lake |
| Black-headed Gull | | |
| Little Gull | | |
| Mediterranean Gull | | |
| Common Gull | | |
| Ring-billed Gull | 07/11/1991 | Marlow GPs |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | | |
| Caspian Gull | | |
| Iceland Gull | 30/03/1998 | Little Marlow GP |
| Glaucous Gull | 09/02/1992 | Hedgerley |
| Great Black-backed Gull | | |
| Little Tern | 07/05/1979 | Marlow (Randles) GP |
| Black Tern | | |
| White-winged Black Tern | 20/05/2019 | Willen Lake |
| Sandwich Tern | 16/04/1979 | Little Marlow GP |
| Common Tern | | |
| Roseate Tern | 13/05/2011 | Jubilee River |
| Arctic Tern | | |
| 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 | | |
| Alpine Swift | 18/04/2006 | Cliveden |
| Kingfisher | | |
| Hoopoe | 23/05/2011 | Horsley's Green |
| Wryneck | 03/09/2000 | Aylesbury |
| Green Woodpecker | | |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | ********** | ********** |
| Woodlark | ********** | ********** |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Red-rumped Swallow | 27/4/22 | Little Marlow GP |
| Richard's Pipit | 19/02/25 | Bury Field Newport Pagnall |
| Tree Pipit | | |
| Meadow Pipit | | |
| Rock Pipit | 06/03/1993 | Little Marlow Meadows |
| Water Pipit | 04/04/1994 | Little Marlow |
| Yellow Wagtail | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Waxwing | 17/12/1988 | Burnham |
| Dipper | 13/03/20 | The Rye |
| Wren | | |
| Dunnock | | |
| Alpine Accentor | 5/5/2024 | Pitstone Quarry |
| Robin | | |
| Nightingale | | |
| Black Redstart | ********** | ********** |
| Redstart | | |
| Whinchat | | |
| Stonechat | | |
| Wheatear | | |
| Black-eared Wheatear | 25/04/1992 | Chearsley |
| Ring Ouzel | | |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | | |
| Cetti's Warbler | 08/10/1995 | Shardeloes Lake |
| Grasshopper Warbler | | |
| River Warbler | 16/06/1997 | Linford GPs (Heard) |
| Sedge Warbler | | |
| Marsh Warbler | ********** | ********** |
| Reed Warbler | | |
| Blackcap | | |
| Garden Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Dartford Warbler | ********** | ********** |
| Yellow-browed Warbler | 09/04/2004 | Bow Brickhill |
| Wood Warbler | 22/05/1977 | Davenport Wood |
| Chiffchaff | | |
| Willow Warbler | | |
| Goldcrest | | |
| Firecrest | | |
| Spotted Flycatcher | | |
| Pied Flycatcher | 07/09/1976 | Booker Woods |
| Bearded Tit | 13/11/1983 | Little Marlow GP |
| Long-tailed Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Coal Tit | | |
| Willow Tit | 23/03/1974 | Loudwater |
| Marsh Tit | | |
| Nuthatch | | |
| Treecreeper | | |
| Red-backed Shrike | 23/09/2005 | Astwood |
| Great Grey Shrike | 15/02/1988 | Turville |
| Woodchat Shrike | 01/05/2003 | Langley Park |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | 05/08/2001 | Northend |
| Starling | | |
| House Sparrow | | |
| Tree Sparrow | | |
| Chaffinch | | |
| Brambling | | |
| Greenfinch | | |
| Goldfinch | | |
| Siskin | | |
| Linnet | | |
| Redpoll | | (Mealy Redpoll Speen) |
| Two-barred Crossbill | 02/02/2003 | Hedgerley |
| Common Crossbill | | |
| Bullfinch | | |
| Hawfinch | 27/12/1981 | Flackwell Heath |
| Lapland Bunting | 20/01/1987 | Dorney Common |
| Snow Bunting | 30/04/2005 | Little Marlow GP |
| Yellowhammer | | |
| Cirl Bunting | 16/04/1977 | West Wycombe Hill |
| Little Bunting | 1987 | Iver Heath |
| Reed Bunting | | |
| Corn Bunting | | |
