| Great Northern Diver | 15/1/2024 | Juvenile at Calvert BBOWT Lake |
| Little Grebe | 12/1/2024 | Great Water |
| Great Crested Grebe | 12/1/2024 | Chesham Fishing Lakes |
| Cormorant | | |
| Cattle Egret | 26/2/2024 | A winter-plumaged adult at Ickford Bridge |
| Little Egret | 11/1/24 | 11 in Pow Wow Lake roost (Chesham) |
| Great White Egret | 15/1/2024 | Calvert Sailing Lake |
| Grey Heron | | |
| White Stork | 21/3/2024 | Two adults from the Knepp introduction at Eythrope (GB28 and 81) |
| Glossy Ibis | 14/1/2024 | A juvenile showing very well in flooded fields at Little Marlow (photographed) |
| Mute Swan | | |
| Pink-footed Goose | 4/3/2024 | First-winter with Greyalgs in Marsworth Horse Paddocks |
| Greylag Goose | 12/1/2024 | Kennel Farm Water Meadows, Little Missenden |
| Canada Goose | 8/1/2024 | Dorney Common |
| Barnacle Goose | 26/2/2024 | Z90 - a non-naturalised bird from Merseyside on Dorney Common with Canadas |
| Egyptian Goose | | |
| Shelduck | 8/1/2024 | 3 on Dorney Common |
| Mandarin Duck | 12/1/2024 | 16 at Black Park Country Park |
| Wigeon | 8/1/2024 | Fulmer Lake |
| Gadwall | 10/1/24 | 176 on College Lake |
| Teal | 8/1/2024 | Fulmer Lake |
| Mallard | | |
| Pintail | 19/1/2024 | A pair on the main lake at College Lake BBOWT |
| Garganey | ********** | ********** |
| Shoveler | 8/1/2024 | Fulmer Lake |
| Red-crested Pochard | 11/1/24 | College Lake (6 birds) |
| Pochard | 10/1/24 | College Lake |
| Tufted Duck | | |
| Scaup | 18/1/2024 | An adult drake on Willen Lake South Basin |
| Common Scoter | 19/2/2024 | Drake at Linford Nature Reserve |
| Goldeneye | 10/1/24 | A female on the main lake at College |
| Goosander | ********** | ********** |
| Red Kite | | |
| Marsh Harrier | 8/5/2024 | Female-type at Gallows Bridge |
| Sparrowhawk | 10/1/24 | College Lake |
| Buzzard | | |
| Kestrel | | |
| Hobby | ********** | ********** |
| Peregrine | ********** | ********** |
| Red-legged Partridge | | |
| Grey Partridge | | |
| Pheasant | | |
| Water Rail | 22/1/2024 | River Colne by Tilehouse Pit North |
| Moorhen | | |
| Coot | | |
| Oystercatcher | 19/2/2024 | Pair at Emberton Country Park |
| Black-winged Stilt | 28/4/2024 | A first summer in the NW corner of the large lake at College Lake |
| Little Ringed Plover | 18/3/2024 | A pair on Dorney Flood |
| Ringed Plover | 28/4/2024 | Logistics Park Flood |
| Golden Plover | 19/1/2024 | 3 at Down Farm cereal fields, Pitstone Hill |
| Lapwing | 8/1/2024 | Misbourne LNR |
| Dunlin | 28/4/2024 | A party of 6 at Logistics Park flood |
| Jack Snipe | 21/1/2024 | 2 on Stoke Common |
| Snipe | 10/1/24 | College Lake |
| Woodcock | 22/1/2024 | Charcoal Grove |
| Black-tailed Godwit | 11/2/2024 | Flying high over Drayton Beauchamp (from Wilstone) |
| Curlew | 26/2/2024 | A flock of 8 at Ickford Bridge floods |
| Common Sandpiper | 15/4/2024 | 2 on the South Basin at Willen Lake |
| Green Sandpiper | 9/2/2024 | Fulmer Lake |
| Greenshank | 6/4/2024 | College Lake BBOWT main marsh |
| Wood Sandpiper | 1/5/2024 | Spade Oak Pit |
| Redshank | 21/2/2024 | College Lake BBOWT |
| Black-headed Gull | | |
| Little Gull | 10/3/2024 | An adult winter feeding in the Bucks section of Marsworth Reservoir |
| Mediterranean Gull | 11/1/2024 | Adult winter in College Lake roost |
| Common Gull | | |
| Lesser Black-backed Gull | | |
| Herring Gull | | |
| Yellow-legged Gull | 11/1/2024 | 2 adults in College Lake roost |
| Caspian Gull | | |
| Great Black-backed Gull | | |
| Black Tern | 27/4/2024 | 2 at Calvert Sailing Lake |
| Common Tern | 1/4/24 | Spade Oak Pit |
| Arctic Tern | 23/4/2024 | A flock of 43 flew east over Drayton Beauchamp at 1015 |
| Rock Dove / Feral Pigeon | | |
| Stock Dove | | |
| Woodpigeon | | |
| Collared Dove | | |
| Ring-necked Parakeet | | |
| Cuckoo | 25/4/2024 | 1-2 at Linford Lakes NR |
| Barn Owl | 29/1/2024 | Chesham local pair |
| Little Owl | 15/1/2024 | Usual tree at FFNR |
| Tawny Owl | | |
| Short-eared Owl | ********** | ********** |
| Swift | 24/4/2024 | 5 at Spade Oak |
| Kingfisher | 15/1/2024 | Calvert Sailing Lakes |
| Green Woodpecker | 25/1/2024 | Chalfont St Giles |
| Great Spotted Woodpecker | | |
| Lesser Spotted Woodpecker | ********** | ********** |
| Skylark | | |
| Sand Martin | 28/3/24 | 8 at Spade Oak |
| Swallow | 28/3/24 | Single at Spade Oak |
| House Martin | 7/4/2024 | 3 over Bois Mill Lake |
| Tree Pipit | 2/4/2024 | Ivinghoe Beacon |
| Meadow Pipit | | |
| Yellow Wagtail | 11/4/2024 | 3 adulkt males on the flood at Amersham Flood Meadows |
| Grey Wagtail | 12/1/2024 | |
| Pied Wagtail | | |
| Waxwing | | A large irruption in January with several flocks encountered |
| Wren | | |
| Dunnock | | |
| Alpine Accentor | 4/5/2024 | Pitstone Quarry |
| Robin | | |
| Nightingale | ********** | ********** |
| Whinchat | 29/4/2024 | 4 together at Ivinghoe Beacon |
| Stonechat | ********** | ********** |
| Wheatear | 20/3/2024 | Male in sheepfield at Ivinghoe Beacon |
| Ring Ouzel | 6/4/2024 | 3 males on Pitstone Hill |
| Blackbird | | |
| Fieldfare | | |
| Song Thrush | | |
| Redwing | | |
| Mistle Thrush | 8/1/2024 | Hazlemere |
| Cetti's Warbler | 11/1/24 | College Lake |
| Grasshopper Warbler | 27/4/24 | Reeling male at Wicken Wood |
| Sedge Warbler | 8/4/24 | Singing male in reedbed |
| Reed Warbler | 8/4/24 | Singing male in reedbed |
| Blackcap | | |
| Garden Warbler | 24/4/2024 | Singing male at Spade Oak |
| Lesser Whitethroat | 18/4/2024 | Quainton Hills |
| Whitethroat | 18/4/2024 | Amersham Flood Meadows |
| Dartford Warbler | ********** | ********** |
| Chiffchaff | 19/1/2024 | 2 at The Wides, Wendover Canal |
| Willow Warbler | 25/3/2024 | Singing male at Spade Oak Pit |
| Goldcrest | 12/1/24 | |
| Firecrest | 12/2/2024 | 4 located in Littleworth Common area |
| Long-tailed Tit | | |
| Blue Tit | | |
| Great Tit | | |
| Coal Tit | 10/1/24 | Great Hampden |
| Marsh Tit | | |
| Nuthatch | 12/1/24 | Latimer House |
| Treecreeper | 10/1/24 | Great Hampden |
| Jay | | |
| Magpie | | |
| Jackdaw | | |
| Rook | | |
| Carrion Crow | | |
| Raven | 14/1/2024 | Little Marlow |
| Starling | | |
| House Sparrow | | |
| Chaffinch | | |
| Brambling | | |
| Greenfinch | 15/1/2024 | College Road, Aston Clinton |
| Goldfinch | | |
| Siskin | 10/1/24 | Great Hampden |
| Linnet | 17/1/2024 | Saunderton |
| Lesser Redpoll | 17/1/2024 | 3 in Penn Wood |
| Mealy Redpoll | 13/3/2024 | 3 amongst 40 Redpoll on Rammamere Heath |
| Common Crossbill | 10/1/24 | 40+ in the Great Hampden Larch woodland |
| Bullfinch | 12/1/24 | Chesham Pow Wow Lake |
| Yellowhammer | | |
| Reed Bunting | 17/1/2024 | Saunderton |
| Corn Bunting | | |