| Little Grebe | | |
| Great Crested Grebe | | |
| Cormorant | | |
| Cattle Egret | | |
| Little Egret | | |
| Great White Egret | | |
| Grey Heron | | |
| Purple Heron | | Weston Turville Reservoir |
| Glossy Ibis | | LMGP |
| Spoonbill | | LMGP |
| Mute Swan | | |
| Whooper Swan | 12/11 | LMGP |
| Pink-footed Goose | 18/9 | Fulmer Lake |
| White-fronted Goose | 23/11 | Dorney Common |
| Greylag Goose | | |
| Canada Goose | | |
| Barnacle Goose | | |
| Egyptian Goose | | |
| Shelduck | | |
| Mandarin Duck | | |
| Wigeon | | |
| Gadwall | | |
| Teal | | |
| Mallard | | |
| Pintail | | |
| Garganey | | ********** |
| Shoveler | | |
| Pochard | | |
| Tufted Duck | | |
| Eider | 9/5/25 | Calvert Sailing Lake |
| Common Scoter | | LMGP |
| Goosander | | |
| Red Kite | | |
| Sparrowhawk | | |
| Buzzard | | |
| Kestrel | | |
| Hobby | | |
| Peregrine | | |
| Red-legged Partridge | | |
| Grey Partridge | | |
| Pheasant | | |
| Water Rail | | |
| Little Crake | | Linford Lakes |
| Moorhen | | |
| Coot | | |
| Oystercatcher | | |
| Avocet | | |
| Little Ringed Plover | | |
| Ringed Plover | | |
| Golden Plover | | |
| Lapwing | | |
| Knot | | |
| Temminck's Stint | | LMGP |
| White-rumped Sandpiper | | Dorney Common |
| Dunlin | | |
| Ruff | | |
| Snipe | | |
| Woodcock | | |
| Black-tailed Godwit | | |
| Bar-tailed Godwit | 24/4/25 | Amersham Flood Meadows |
| Whimbrel | | |
| Common Sandpiper | | |
| Green Sandpiper | | |
| Greenshank | | |
| Wood Sandpiper | | LMGP |
| Redshank | | |
| Red-necked Phalarope | | LMGP |
| Black-headed Gull | | |
| Little Gull | | |
| Mediterranean Gull | | |
| Common Gull | | |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | | |
| Caspian Gull | | |
| Glaucous Gull | | LMGP |
| Great Black-backed Gull | | |
| Little Tern | | LMGP |
| Black Tern | | |
| Common Tern | | |
| Arctic Tern | | |
| Rock Dove / Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Collared Dove | | |
| Ring-necked Parakeet | | |
| Cuckoo | | |
| Barn Owl | | |
| Little Owl | | |
| Tawny Owl | | |
| Long-eared Owl | | |
| Nightjar | | |
| Swift | | |
| Kingfisher | | |
| Green Woodpecker | | |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | | |
| Woodlark | | |
| Skylark | | |
| Sand Martin | | |
| Swallow | | |
| House Martin | | |
| Richard's Pipit | 21/2/25 | Bury Field, Newport Pagnell |
| Meadow Pipit | | |
| Rock Pipit | 20/3/25 | Amersham Flood Meadows |
| Yellow Wagtail | | |
| Grey Wagtail | | |
| Pied Wagtail | | |
| Waxwing | | |
| Wren | | |
| Dunnock | | |
| Alpine Accentor | 5/5/24 | Pitstone Quarry |
| Robin | | |
| Black Redstart | | |
| Redstart | | |
| Whinchat | | |
| Stonechat | | |
| Wheatear | | |
| Ring Ouzel | | |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | | |
| Cetti's Warbler | | |
| Sedge Warbler | | |
| Reed Warbler | | |
| Blackcap | | |
| Garden Warbler | | |
| Lesser Whitethroat | | |
| Whitethroat | | |
| Dartford Warbler | | |
| Yellow-browed Warbler | | Wooburn Common |
| Chiffchaff | | |
| Willow Warbler | | |
| Goldcrest | | |
| Firecrest | | |
| Spotted Flycatcher | | |
| Long-tailed Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Coal Tit | | |
| Nuthatch | | |
| Treecreeper | | |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | | |
| Starling | | |
| House Sparrow | | |
| Chaffinch | | |
| Brambling | | |
| Greenfinch | | |
| Goldfinch | | |
| Siskin | | |
| Linnet | | |
| Redpoll | | |
| Bullfinch | | |
| Yellowhammer | | |
| Reed Bunting | | |
| Corn Bunting | | |
