| Red-throated Diver | 24/12/1990 | Little Marlow GP |
| Black-throated Diver | 17/12/2002 | Taplow GP |
| Great Northern Diver | 04/12/2017 | Calvert |
| Little Grebe | | |
| Great Crested Grebe | | |
| Red-necked Grebe | 24/12/1990 | Little Marlow GP |
| Slavonian Grebe | 05/11/2011 | Little Marlow GP |
| Black-necked Grebe | ********** | ********** |
| Cormorant | | |
| Shag | 10/03/1990 | Caldecotte Lake |
| Bittern | ********** | ********** |
| Cattle Egret | 21/05/2012 | Haversham |
| Little Egret | | |
| Great White Egret | 18/12/2012 | Chenies |
| Grey Heron | | |
| Purple Heron | 17/11/2006 | Latimer |
| White Stork | 01/04/2004 | Dorney Common |
| Glossy Ibis | 07/05/2011 | Dorney Lake |
| Spoonbill | 16/05/2007 | Jubilee River |
| Mute Swan | | |
| Bewick's Swan | 04/12/2010 | Little Marlow GP |
| Whooper Swan | 30/10/2010 | Hillesden |
| Tundra Bean Goose | 20/02/2017 | Hillesden |
| Pink-footed Goose | 27/10/2020 | Watermead |
| White-fronted Goose | 27/12/2010 | Jubilee River |
| Greylag Goose | | |
| Canada Goose | | |
| Barnacle Goose | | |
| Brent Goose | 02/03/2010 | Jubilee River |
| Egyptian Goose | | |
| Shelduck | | |
| Mandarin Duck | | |
| Wigeon | | |
| Gadwall | | |
| Teal | | |
| Mallard | | |
| Pintail | | |
| Garganey | ********** | ********** |
| Shoveler | | |
| Red-crested Pochard | 24/01/2007 | Marlow GP |
| Pochard | | |
| Ring-necked Duck | 10/01/2015 | Calvert |
| Ferruginous Duck | 09/02/2016 | Caldecotte Lake |
| Tufted Duck | | |
| Scaup | 24/12/1990 | Little Marlow GP |
| Long-tailed Duck | 26/12/1990 | Weston Turville Res |
| Common Scoter | 01/12/2008 | Dorney Lake |
| Velvet Scoter | 07/11/2016 | Willen Lake |
| Goldeneye | | |
| Smew | 27/12/2010 | Jubilee River |
| Red-breasted Merganser | 26/11/2014 | Caldecotte Lake |
| Goosander | ********** | ********** |
| Ruddy Duck | ********** | ********** |
| Honey-buzzard | 19/09/2009 | Marlow Bottom |
| Red Kite | | |
| Booted Eagle | 02/11/2024 | West of Mill End - pending |
| Marsh Harrier | 26/08/2007 | Marlow Bottom |
| Hen Harrier | 29/11/2011 | Gallows Bridge |
| Goshawk | ********** | ********** |
| Sparrowhawk | | |
| Buzzard | | |
| Osprey | 22/08/2010 | Marlow Bottom |
| Kestrel | | |
| Red-footed Falcon | 02/06/2010 | Adj Wilstone Res |
| Merlin | 16/10/2010 | Marlow Bottom |
| Hobby | | |
| Peregrine | ********** | ********** |
| Red-legged Partridge | | |
| Grey Partridge | 10/02/2012 | Kimblewick |
| Quail | 01/07/2012 | Great Kimble |
| Pheasant | | |
| Water Rail | | |
| Spotted Crake | 27/08/2018 | Willen Lake |
| Little Crake | 07/11/2023 | Linford |
| Moorhen | | |
| Coot | | |
| Crane | 05/05/2012 | Marlow |
| Oystercatcher | 15/07/2009 | Little Marlow GP |
| Black-winged Stilt | 24/04/2016 | Manor Farm |
| Avocet | 29/05/2010 | Dorney Lake |
| Little Ringed Plover | 04/08/1989 | Willen Lake |
| Ringed Plover | 04/08/1989 | Willen Lake |
| Kentish Plover | 01/05/2017 | Pitstone Quarry |
| Golden Plover | | |
| Grey Plover | 29/04/2012 | Dorney Lake |
| Lapwing | | |
| Knot | 13/03/2009 | Dorney Lake |
| Sanderling | 22/05/2010 | Little Marlow GP |
| Little Stint | 25/11/1990 | Willen Lake |
| Temminck's Stint | 13/05/2008 | Little Marlow GP |
| White-rumped Sandpiper | 21/07/2022 | Dorney Common |
| Pectoral Sandpiper | 18/09/2012 | Dorney Common |
| Curlew Sandpiper | 07/05/2015 | Manor Farm |
| Dunlin | 06/05/1990 | Willen Lake |
| Ruff | 06/05/1990 | Willen Lake |
| Jack Snipe | 30/09/2010 | Little Marlow GP |
| Snipe | 06/05/1990 | Willen Lake |
| Woodcock | 07/11/2007 | Marlow Bottom |
| Black-tailed Godwit | 17/08/2009 | Little Marlow GP |
| Bar-tailed Godwit | 29/04/2011 | Little Marlow GP |
| Whimbrel | 08/04/2009 | Little Marlow GP |
| Curlew | 17/08/2010 | Marlow Bottom |
| Common Sandpiper | 04/08/1989 | Willen Lake |
| Spotted Sandpiper | 12/05/2011 | Caldecotte Lake |
| Green Sandpiper | 13/03/2009 | Dorney Lake |
| Spotted Redshank | 24/04/2013 | Little Marlow GP |
| Greenshank | 24/08/2003 | Little Marlow GP |
| Lesser Yellowlegs | 05/05/2014 | College Lake |
| Wood Sandpiper | 16/06/2010 | College Lake |
| Redshank | | |
| Turnstone | 08/05/2008 | Little Marlow GP |
| Wilson's Phalarope | 28/05/2006 | Hillesden |
| Red-necked Phalarope | 07/06/2020 | Little Marlow GP |
| Grey Phalarope | 04/09/2008 | Weston Turville Res |
| Sabine's Gull | 02/07/2012 | Startops End Res |
| Kittiwake | 07/03/2014 | Little Marlow GP |
| Black-headed Gull | | |
| Little Gull | 06/05/1990 | Willen Lake |
| Mediterranean Gull | 23/03/2004 | Little Marlow GP |
| Common Gull | | |
| Ring-billed Gull | 03/04/2003 | Little Marlow GP |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | 15/07/2009 | Little Marlow GP |
| Caspian Gull | 04/01/2012 | Little Marlow GP |
| Iceland Gull | 24/12/1996 | Willen Lake |
| Glaucous Gull | 07/02/2012 | Little Marlow GP |
| Great Black-backed Gull | | |
| Little Tern | 23/08/2011 | Little Marlow GP |
| Black Tern | 06/05/1990 | Willen Lake |
| White-winged Black Tern | 20/05/2019 | Willen Lake |
| Sandwich Tern | 06/04/2004 | Little Marlow GP |
| Common Tern | | |
| Arctic Tern | 18/04/2005 | Little Marlow GP |
| Little Auk | 22/01/2012 | College Lake |
| Rock Dove / Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Collared Dove | | |
| Turtle Dove | ********** | ********** |
| Ring-necked Parakeet | | |
| Cuckoo | 13/05/2010 | Dorney |
| Barn Owl | 18/11/2008 | Berryfields |
| Little Owl | | |
| Tawny Owl | | |
| Long-eared Owl | | |
| Short-eared Owl | ********** | ********** |
| Nightjar | ********** | ********** |
| Swift | | |
| Kingfisher | | |
| Hoopoe | 25/04/2021 | Willen excavation |
| Wryneck | 14/09/2008 | Prestwood |
| Green Woodpecker | | |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | ********** | ********** |
| Woodlark | ********** | ********** |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Red-rumped Swallow | 27/04/2022 | Little Marlow GP |
| Richard's Pipit | 22/02/2025 | Bury Field, Newport Parnell |
| Tree Pipit | 27/08/2018 | Ivinghoe |
| Meadow Pipit | | |
| Rock Pipit | 13/10/2010 | Dorney Lake |
| Water Pipit | 04/04/2004 | Little Marlow GP |
| Yellow Wagtail | 06/08/1989 | Willen Lake |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Waxwing | 16/02/2005 | High Wycombe |
| Dipper | 14/03/2020 | Black-bellied The Rye |
| Wren | | |
| Dunnock | | |
| Alpine Accentor | 05/05/2024 | Pitstone Quarry |
| Robin | | |
| Nightingale | ********** | ********** |
| Black Redstart | ********** | ********** |
| Redstart | 13/04/2012 | Marlow |
| Whinchat | 22/04/2010 | Dorney Lake |
| Stonechat | ********** | ********** |
| Wheatear | 01/05/2005 | Marlow |
| Ring Ouzel | 16/10/2010 | Incombe Hole |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | | |
| Cetti's Warbler | 24/02/2012 | Jubilee River |
| Grasshopper Warbler | 08/09/2015 | Marlow |
| Sedge Warbler | | |
| Marsh Warbler | ********** | ********** |
| Reed Warbler | | |
| Blackcap | | |
| Garden Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Dartford Warbler | ********** | |
| Yellow-browed Warbler | 27/09/2017 | Little Marlow GP |
| Wood Warbler | 21/07/2012 | Marlow Bottom |
| Chiffchaff | | |
| Willow Warbler | | |
| Goldcrest | | |
| Firecrest | 31/05/2004 | Marlow Bottom |
| Spotted Flycatcher | | |
| Pied Flycatcher | 13/08/2004 | Marlow Bottom |
| Bearded Tit | 24/02/2012 | Jubilee River |
| Long-tailed Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Coal Tit | | |
| Willow Tit | 24/01/2012 | Linford |
| Marsh Tit | | |
| Nuthatch | | |
| Treecreeper | | |
| Red-backed Shrike | 21/09/2005 | Astwood |
| Great Grey Shrike | 12/03/2011 | Hillesden |
| Woodchat Shrike | 01/05/2003 | Langley Park |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | 01/09/2007 | Marlow Bottom |
| Starling | | |
| House Sparrow | | |
| Tree Sparrow | 04/08/1989 | Willen Lake |
| Chaffinch | | |
| Brambling | 01/11/2003 | Marlow Bottom |
| Greenfinch | | |
| Goldfinch | | |
| Siskin | | |
| Linnet | | |
| Redpoll | | |
| Two-barred Crossbill | 04/03/2003 | Hedgerley |
| Common Crossbill | 05/02/2003 | Hedgerley |
| Bullfinch | | |
| Hawfinch | 02/03/2006 | Little Marlow GP |
| Lapland Bunting | 28/10/2008 | Dorney Lake |
| Snow Bunting | 30/04/2005 | Little Marlow GP |
| Yellowhammer | | |
| Reed Bunting | | |
| Corn Bunting | 02/06/2011 | Lodge Hill |
