| Great Northern Diver | 3/1/2018 | Juvenile still present on Calvert Sailing Lake |
| Little Grebe | 1/1/2018 | College Lake BBOWT |
| Great Crested Grebe | 1/1/2018 | Marsworth Reservoir |
| Cormorant | 1/1/2018 | Marsworth Reservoir |
| Shag | 23/3/2018 | An adult in breeding plumage present on the South Basin at Willen Lake (photographed) |
| Bittern | ********** | ********** |
| Cattle Egret | 15/1/2018 | Haversham Mill (associating with 8 Mute Swans) (photographed) |
| Little Egret | 2/1/2018 | Bois Mill Meadow (Chess Valley) |
| Great White Egret | 21/1/2018 | Linford Nature Reserve. Flew into roost at 1640 hours |
| Grey Heron | 1/1/2018 | College Lake BBOWT |
| Mute Swan | 1/1/2018 | College Lake BBOWT |
| Pink-footed Goose | 12/2/2018 | With 256 Greylag in fields north of the main pit at Gayhurst complex (observed with Rob Norris) |
| White-fronted Goose | 27/11/2018 | A family party (1 juvenile) consorting with 272 Canada Geese in grass field opposite Dorney Court |
| Greylag Goose | 1/1/2018 | 3 at Shardeloes Lake |
| Canada Goose | 1/1/2018 | 208 at Shardeloes Lake |
| Barnacle Goose | 24/2/2018 | 66 back at Emberton Country Park |
| Egyptian Goose | 4/1/2018 | 134 in the Castleman's Farm Poultry Fields |
| Shelduck | 4/1/2018 | Spade Oak Pit |
| Mandarin Duck | 4/1/2018 | Just 9 on the Upper Pond in Burnham Beeches NNR |
| Wigeon | 1/1/2018 | College Lake BBOWT |
| Gadwall | 1/1/2018 | College Lake BBOWT |
| Teal | 1/1/2018 | |
| Mallard | 1/1/2018 | College Lake BBOWT |
| Pintail | 6/10/2018 | 2 at College Lake BBOWT on main marsh |
| Garganey | ********** | ********** |
| Shoveler | 1/1/2018 | College Lake BBOWT |
| Red-crested Pochard | 8/1/2018 | Pair in NW corner of College Lake |
| Pochard | 1/1/2018 | College Lake BBOWT |
| Tufted Duck | 1/1/2018 | College Lake BBOWT |
| Scaup | 29/11/2018 | A juvenile drake with 18 Tufted Duck on the Return Lake at Dorney Rowing Lakes |
| Common Scoter | 25/3/2018 | On a day of a marked arrival of this species, I recorded a pair at College Lake Deep Pit and 3 more at Caldecott Lake South |
| Goldeneye | 3/1/2018 | 10 at Foxcote Reservoir |
| Red-breasted Merganser | 17/12/2018 | After a lot of effort, finally nailed this beast in Bucks - on River Colne with 5 Goosander adjacent to Tilehouse Pit workings |
| Goosander | ********** | ********** |
| Red Kite | 1/1/2018 | Little Missendon |
| Marsh Harrier | 23/8/2018 | Heading SSW over Ivinghoe Hills NR |
| Sparrowhawk | 3/1/2018 | Little Missenden |
| Buzzard | 4/1/2018 | Castleman's Farm |
| Osprey | 21/8/2018 | Flying towards Tring high over Grove Church (photographed) |
| Kestrel | 1/1/2018 | Shardeloes |
| Merlin | 23/4/2018 | Male being aggressively chased by a male Curlew across main field at breeding locality |
| Hobby | ********** | ********** |
| Peregrine | ********** | ********** |
| Red-legged Partridge | 3/1/2018 | 3 near Foxcote Reservoir |
| Grey Partridge | 1/1/2018 | A covey of 5 at Pitstone Hill |
| Pheasant | 1/1/2018 | Shardeloes |
| Water Rail | 1/1/2018 | Marsworth Reservoir |
| Spotted Crake | 27/8/2018 | Willen Lake North Basin |
| Moorhen | 1/1/2018 | College Lake BBOWT |
| Coot | 1/1/2018 | College Lake BBOWT |
| Crane | 16/5/2018 | A pair of presumably reintroduction birds at Gallows Bridge main meadow - either of Pensthorpe or Horsey origin |
| Oystercatcher | 24/2/2018 | Pair at College Lake |
| Avocet | 2/4/2018 | 3 birds on the Seasonal Pool at Dorney Lakes; I watched them fly off SSE |
| Little Ringed Plover | ********** | ********** |
| Ringed Plover | 1/4/2018 | College Lake |
| Golden Plover | 23/1/2018 | 300 or more seen today including 250 near Broughton and 50 at Gallows Bridge |
| Lapwing | 1/1/2018 | College Lake BBOWT |
| Knot | 12/5/2018 | A cracking summer plumaged adult on the spit at Spade Oak (observed with Kevin Holt, Alan Stevens & others) |
| Sanderling | 4/3/2018 | A winter-plumaged Sanderling with 15 Dunlin on grass at Dorney Reserve |
| Dunlin | 3/3/2018 | Spade Oak GP |
| Ruff | 19/10/2018 | A male on the spit at Spade Oak Pit (photographed) |
| Jack Snipe | 2/2/2018 | Stony Stratford Nature Reserve |
| Snipe | 8/1/2018 | 2 on island at College Lake BBOWT |
| Woodcock | 28/3/2018 | One flushed from beneath my feet in the Moat at Burnham Beeches NNR |
| Black-tailed Godwit | 28/4/2018 | A bumper day: firstly 102 at College Lake and then another 62 at Manor Farm!! |
| Bar-tailed Godwit | 3/3/2018 | Spade Oak GP |
| Whimbrel | 22/4/2018 | A group of 3 at Gallows Bridge main meadow (photographed) |
| Curlew | 20/3/2018 | 4 birds at a site with suitable breeding habitat |
| Common Sandpiper | 10/4/2018 | Willen Lake South Basin |
| Green Sandpiper | 2/2/2018 | Haversham village flooded field |
| Greenshank | | |
| Wood Sandpiper | 22/5/2018 | Breeding-plumaged adult at Manor Farm (photographed) |
| Redshank | 4/3/2018 | Dorney Lakes |
| Turnstone | 21/5/2018 | Breeding plumaged adult on the West Island spit at College Lake BBOWT late morning (photographed) |
| Black-headed Gull | 1/1/2018 | College Lake BBOWT |
| Little Gull | 4/4/2018 | First-year sat on the water in SE corner of Spade Oak Pit in evening |
| Mediterranean Gull | 19/7/2018 | College Lake BBOWT |
| Common Gull | 1/1/2018 | Shardeloes Lake |
| Lesser Black-backed Gull | 1/1/2018 | College Lake BBOWT |
| Herring Gull | 1/1/2018 | Shardeloes Lake |
| Yellow-legged Gull | 3/1/2018 | 5 adults in roost Calvert BBOWT |
| Caspian Gull | 3/1/2018 | 4 in roost Calvert BBOWT (2 adults, a 1w & a 2w) (with Warren Claydon) |
| Iceland Gull | 20/1/2018 | 3rd winter in roost (seen with Dave Bilcock, Steve Rodwell & Warren Claydon) |
| Great Black-backed Gull | 3/1/2018 | 92 in roost Calvert BBOWT |
| Little Tern | 3/5/2018 | Marsworth Reservoir. Seemingly moribund and ringed! Returned to sit on the bank by the Grand Union Canal twice (watched with David Bilcock) |
| Black Tern | 28/4/2018 | Willen Lake South Basin |
| Sandwich Tern | 7/4/2018 | Black Horse Lake, Linford (seen with Rob Morris & Andy H) |
| Common Tern | 4/4/2018 | On spit at Spade Oak Pit |
| Arctic Tern | 17/4/2018 | 1 present with 6 Common Terns at Willen Lake South |
| Stock Dove | 4/1/2018 | Castleman's Farm |
| Woodpigeon | 1/1/2018 | Shardeloes |
| Collared Dove | 2/1/2018 | Chaffinch House |
| Turtle Dove | ********** | ********** |
| Ring-necked Parakeet | 5/1/2018 | Denham Garden Village |
| Cuckoo | 23/4/2018 | Linford Nature Reserve |
| Barn Owl | 16/2/2018 | Four individuals noted in the Chess Valley |
| Little Owl | 25/3/2018 | A pair at Gayhurst Quarry |
| Tawny Owl | 28/3/2018 | Hogback Wood, Beaconsfield |
| Short-eared Owl | ********** | ********** |
| Swift | 23/4/2018 | 8 over Foxcote Reservoir |
| Kingfisher | 1/1/2018 | Marsworth Reservoir |
| Green Woodpecker | 4/1/2018 | Burnham Beeches NNR |
| Great Spotted Woodpecker | 2/1/2018 | Ladies Arbour Wood (Little Chalfont) |
| Lesser Spotted Woodpecker | ********** | ********** |
| Woodlark | ********** | ********** |
| Skylark | 1/1/2018 | Pitstone Hill |
| Sand Martin | 30/3/2018 | 23 over east end of Spade Oak Pit |
| Swallow | 2/4/2018 | 4 with Sand Martins over Willen South Basin |
| House Martin | 4/4/2018 | Spade Oak Pit (with hirundine flock) |
| Tree Pipit | 6/8/2018 | Ivinghoe Beacon Ringshall Slope (2) |
| Meadow Pipit | 13/1/2018 | Bury Field Common |
| Yellow Wagtail | 6/4/2018 | Flew east at Gallows Hill, Ivinghoe Beacon |
| Grey Wagtail | 4/1/2018 | Spade Oak Pit |
| Pied Wagtail | 2/1/2018 | Chaffinch House |
| Wren | 1/1/2018 | |
| Dunnock | 1/1/2018 | |
| Robin | 1/1/2018 | |
| Nightingale | ********** | ********** |
| Redstart | 01/05/2018 | A cracking male in Woodrow at the entrance to the Equestrian Centre |
| Whinchat | 23/4/2018 | A female on fenceline at Marsworth Horse Paddocks (photographed) |
| Stonechat | ********** | ********** |
| Wheatear | 25/3/2018 | Male on Ivinghoe Beacon in sheep fields |
| Ring Ouzel | 2/4/2018 | A cracking male showing well at Willen Lake South Basin |
| Blackbird | 1/1/2018 | Pitstone Hill |
| Fieldfare | 1/1/2018 | 45 at Pitstone Hill |
| Song Thrush | 1/1/2018 | Pitstone Hill |
| Redwing | 2/1/2018 | Lower Weedonhill Farm |
| Mistle Thrush | 2/1/2018 | Bell Lane Fields (Little Chalfont) (pair) |
| Cetti's Warbler | 3/1/2018 | Calvert BBOWT Lake |
| Grasshopper Warbler | 17/5/2018 | Reeling from Rape field in SP8751 |
| Sedge Warbler | 7/4/2018 | Singing male in Bucks reedbed of Marsworth Reservoir |
| Reed Warbler | 23/4/2018 | Marsworth Reservoir/Linford Lakes NR |
| Blackcap | 21/1/2018 | A nice male on my garden feeders (Chaffinch House in Little Chalfont) |
| Garden Warbler | 26/4/2018 | 2 singing males at Linford Lakes NR |
| Lesser Whitethroat | 17/4/2018 | Rattling male at Hillesden Lakes |
| Whitethroat | 20/4/2018 | Drayton Beauchamp |
| Dartford Warbler | ********** | ********** |
| Chiffchaff | 24/2/2018 | 2 at Ravensthorpe Sewage Works |
| Willow Warbler | 30/3/2018 | A singing male at the east end of Spade Oak |
| Goldcrest | 1/1/2018 | |
| Firecrest | 28/3/2018 | A singing male showing very well in the tall conifers lining the back garden of 37 Woodside Road in Beaconsfield |
| Spotted Flycatcher | 24/5/2018 | Pair in Hardmead Cemetery/Rectory Garden |
| Pied Flycatcher | 28/4/2018 | A crippling first-summer male in bushes by the viaduct at Floodplain Forest LNR |
| Long-tailed Tit | 1/1/2018 | Pitstone Hill |
| Blue Tit | 1/1/2018 | Little Missenden |
| Great Tit | 1/1/2018 | Little Missenden |
| Coal Tit | 1/1/2018 | College Lake BBOWT |
| Marsh Tit | 1/1/2018 | Pair at feeders at College Lake BBOWT |
| Nuthatch | 1/1/2018 | Little Missenden Churchyard |
| Treecreeper | 2/1/2018 | Weedon Hill Woods |
| Jay | 2/1/2018 | Chesham Bois |
| Magpie | 1/1/2018 | Shardeloes |
| Jackdaw | 1/1/2018 | Little Missenden |
| Rook | 1/1/2018 | Pitstone Hill |
| Carrion Crow | 1/1/2018 | Shardeloes |
| Raven | 2/1/2018 | Party of 3 over my garden in Little Chalfont |
| Starling | 1/1/2018 | Little Chalfont |
| House Sparrow | 1/1/2018 | Little Chalfont |
| Tree Sparrow | 3/1/2018 | 8 in garden in Dag Lane, Stoke Goldington |
| Chaffinch | 1/1/2018 | Little Chalfont |
| Brambling | 2/1/2018 | Lower Weedonhill Farm |
| Greenfinch | 1/1/2018 | Little Missenden |
| Goldfinch | 1/1/2018 | Little Chalfont |
| Siskin | 13/1/2018 | 30 at Linford NR |
| Linnet | 3/1/2018 | 40 near Foxcote Reservoir |
| Redpoll | 4/1/2018 | 3 on my Chaffinch House garden feeders (Mealy Redpoll 29/10/2018 3 in Top Scrub (Ivinghoe Beacon) part of a national invasion at present) |
| Common Crossbill | 22/3/2018 | 2 males and a female in Larches and Scots Pines in vicinity of Woburn Golf Clubhouse |
| Bullfinch | 2/1/2018 | Chaffinch House |
| Hawfinch | 1/1/2018 | Up to 35 in Little Missenden village |
| Yellowhammer | 1/1/2018 | Pitstone Hill |
| Reed Bunting | 1/1/2018 | College Lake BBOWT |
| Corn Bunting | 1/1/2018 | 57 at Pitstone Hill/Down Farm Cereal Fields |