SYSTEMATIC LIST
The Systematic List follows the conventions of the British Ornithologist' Union (BOU) and the IOC World Bird List. The list currently stands at 333 - 302 full species and 31 forms. Click on the links to access more details.
The most recent additions:
COLLARED PRATINCOLE - Glareola pratincola: Pilning Wetland Reserve, Northwick Warth in May 2020.
Ashy-headed Wagtail - Motacilla flava cinereocapilla: Northwick Warth in April 2018.
BRENT GOOSE Branta bernicla AE
Pale-bellied Brent Goose Branta bernicla hrota
RED-BREASTED GOOSE Branta ruficollis AE
CANADA GOOSE Branta candensis AC2E
BARNACLE GOOSE Branta leucopsis AC2E
GREYLAG GOOSE Anser anser AC2C4E
Continental Greylag Goose Anser anser rossicus
TAIGA BEAN GOOSE Anser fabalis AE
PINK-FOOTED GOOSE Anser brachyrhynchus A
WHITE-FRONTED GOOSE Anser albifrons AE
Greenland White-fronted Goose Anser albifrons flavirostris
MUTE SWAN Cygnus olor AC2
BEWICK'S SWAN Cygnus columbianus bewickii AE
EGYPTIAN GOOSE Alopochen aegyptiaca C1E
SHELDUCK Tadorna tadorna A
RUDDY SHELDUCK Tadorna ferruginea BDE
GARGANEY Spatula querquedula A
SHOVELER Spatula clypeata A
GADWALL Mareca strepera AC2E
WIGEON Mareca penelope AE
AMERICAN WIGEON Mareca americana AE
MALLARD Anas platyrhynchos AC2C4E
PINTAIL Anas acuta AE
COMMON TEAL Anas crecca A
GREEN-WINGED TEAL Anas carolinensis A
RED-CRESTED POCHARD Netta rufina AC2E
POCHARD Aythya ferina AE
RING-NECKED DUCK Aythya collaris AE
TUFTED DUCK Aythya fuligula A
EIDER Somateria mollissima A
KING EIDER Somateria spectabilis A
VELVET SCOTER Melanitta fusca A
COMMON SCOTER Melanitta nigra A
LONG-TAILED DUCK Clangula hyemalis A
GOLDENEYE Bucephala clangula AE
RED-BREASTED MERGANSER Mergus serrator A
RUDDY DUCK Oxyura jamaicensis C1E
RED-LEGGED PARTRIDGE Alectoris rufa C1E
GREY PARTRIDGE Perdix perdix AC2E
COMMON QUAIL Coturnix coturnix AE
COMMON PHEASANT Phasianus colchicus C1E
RED-THROATED DIVER Gavia stellata A
BLACK-THROATED DIVER Gavia arctica A
PACIFIC DIVER Gavia pacifica A
GREAT NORTHERN DIVER Gavia immer A
STORM PETREL Hydrobates pelagicus A
LEACH'S PETREL Oceanodroma leucorhoa A
FULMAR Fulmarus glacialis A
CORY'S SHEARWATER Calonectris borealis A
SOOTY SHEARWATER Ardenna grisea A
MANX SHEARWATER Puffinus puffinus A
BALEARIC SHEARWATER Puffinus mauretanicus A
LITTLE GREBE Tachybaptus ruficollis A
GREAT CRESTED GREBE Podiceps cristatus A
SLAVONIAN GREBE Podiceps auritus A
BLACK-NECKED GREBE Podiceps nigricollis A
WHITE STORK Ciconia ciconia AE
GLOSSY IBIS Plegadis falcinellus AE
SPOONBILL Platalea leucorodia AE
LITTLE BITTERN Ixobrychus minutus A
BLACK-CROWNED NIGHT-HERON Nycticorax nycticorax AE
GREY HERON Ardea cinerea A
GREAT WHITE EGRET Ardea alba A
LITTLE EGRET Egretta garzetta A
GANNET Morus bassanus A
SHAG Phalacrocorax aristotelis A
CORMORANT Phalacrocorax carbo A
Continental Cormorant Phalacrocorax carbo sinensis
HONEY BUZZARD Pernis apivorus A
SPARROWHAWK Accipiter nisus A
GOSHAWK Accipiter gentilis AC3E
MARSH HARRIER Circus aeruginosus A
PALLID HARRIER Circus macrourus A
MONTAGU'S HARRIER Circus pygargus A
WHITE-TAILED EAGLE Haliaeetus albicilla AC3E
COMMON BUZZARD Buteo buteo AE
WATER RAIL Rallus aquaticus A
SPOTTED CRAKE Porzana porzana A
MOORHEN Gallinula chloropus A
COOT Fulica atra A
STONE CURLEW Burhinus oedicnemus A
OYSTERCATCHER Haematopus ostralegus A
BLACK-WINGED STILT Himantopus himantopus A
AVOCET Recurvirostra avosetta AE
LAPWING Vanellus vanellus A
GOLDEN PLOVER Pluvialis apricaria A
Icelandic Golden Plover Pluvialis apricaria altifrons
AMERICAN GOLDEN PLOVER Pluvialis dominica A
GREY PLOVER Pluvialis squatarola A
RINGED PLOVER Charadrius hiaticula psammodromus A
Tundra Ringed Plover Charadrius hiaticula tundrae
LITTLE RINGED PLOVER Charadrius dubius curonicus A
KENTISH PLOVER Charadrius alexandrinus A
DOTTEREL Charadrius morinellus A
WHIMBREL Numenius phaeopus islandicus A
CURLEW Numenius arquata A
BAR-TAILED GODWIT Limosa lapponica A
BLACK-TAILED GODWIT Limosa limosa islandica A
Continental Black-tailed Godwit Limosa limosa limosa
TURNSTONE Arenaria interpres A
KNOT Calidris canutus A
RUFF Calidris pugnax A
BROAD-BILLED SANDPIPER Calidris falcinellus A
CURLEW SANDPIPER Calidris ferruginea A
TEMMINCK'S STINT Calidris temminckii A
SANDERLING Calidris alba A
DUNLIN Calidris alpina schinzii A
Northern Dunlin Calidris alpina alpina
Greenland Dunlin Calidris alpina arctica
PURPLE SANDPIPER Calidris maritima A
LITTLE STINT Calidris minuta A
WHITE-RUMPED SANDPIPER Calidris fuscicollis A
BUFF-BREASTED SANDPIPER Calidris subruficollis A
PECTORAL SANDPIPER Calidris melanotos A
SEMIPALMATED SANDPIPER Calidris pusilla A
LONG-BILLED DOWITCHER Limnodromus scolopaceus A
WOODCOCK Scolopax rusticola A
JACK SNIPE Lymnocryptes minimus A
COMMON SNIPE Gallinago gallinago A
TEREK SANDPIPER Xenus cinereus A
RED-NECKED PHALAROPE Phalaropus lobatus A
GREY PHALAROPE Phalaropus fulicarius A
COMMON SANDPIPER Actitis hypoleucos A
GREEN SANDPIPER Tringa ochropus A
REDSHANK Tringa totanus A
Icelandic Redshank Tringa totanus robusta
WOOD SANDPIPER Tringa glareola A
SPOTTED REDSHANK Tringa erythropus A
GREENSHANK Tringa nebularia A
COLLARED PRATINCOLE Glareola pratincola A
KITTIWAKE Rissa tridactyla A
BLACK-HEADED GULL Chroicocephalus ridibundus A
LITTLE GULL Hydrocoloeus minutus A
LAUGHING GULL Leucophaeus atricilla A
FRANKLIN'S GULL Leucophaeus pipixcan A
MEDITERRANEAN GULL Ichthyaetus melanocephalus A
COMMON GULL Larus canus A
RING-BILLED GULL Larus delawarensis A
GREAT BLACK-BACKED GULL Larus marinus A
GLAUCOUS GULL Larus hyperboreus A
ICELAND GULL Larus glaucoides A
Kumlien's Gull Larus glaucoides kumlieni
HERRING GULL Larus argentatus argenteus A
Scandinavian Herring Gull Larus argentatus argentatus
CASPIAN GULL Larus cachinnans A
YELLOW-LEGGED GULL Larus michahellis A
LESSER BLACK-BACKED GULL Larus fuscus graellsii A
Continental Lesser Black-backed Gull Larus fuscus intermedius
SANDWICH TERN Thalasseus sandvicensis A
LITTLE TERN Sternula albifrons A
ROSEATE TERN Sterna dougallii A
COMMON TERN Sterna hirundo A
ARCTIC TERN Sterna paradisaea A
WHISKERED TERN Chlidonias hybrida A
WHITE-WINGED BLACK TERN Chlidonias leucopterus A
BLACK TERN Chlidonias niger A
GREAT SKUA Stercorarius skua A
POMARINE SKUA Stercorarius pomarinus A
ARCTIC SKUA Stercorarius parasiticus A
LONG-TAILED SKUA Stercorarius longicaudus A
GUILLEMOT Uria aalge A
RAZORBILL Alca torda islandica A
BLACK GUILLEMOT Cepphus grylle A
PALLAS'S SANDGROUSE Syrrhaptes paradoxus A
ROCK DOVE Columba livia AC4E
STOCK DOVE Columba oenas A
WOODPIGEON Columba palumbus A
TURTLE DOVE Streptopelia turtur A
COLLARED DOVE Streptopelia decaocto A
CUCKOO Cuculus canorus A
BARN OWL Tyto alba AE
TAWNY OWL Strix aluco A
LITTLE OWL Athene noctua C1E
SHORT-EARED OWL Asio flammeus A
EUROPEAN NIGHTJAR Caprimulgus europaeus A
ALPINE SWIFT Tachymarptis melba A
COMMON SWIFT Apus apus A
KINGFISHER Alcedo atthis ispida A
EUROPEAN BEE-EATER Merops apiaster A
LESSER SPOTTED WOODPECKER Dryobates minor comminutus A
GREAT SPOTTED WOODPECKER Dendrocopos major anglicus A
GREEN WOODPECKER Picus viridis A
KESTREL Falco tinnunculus A
RED-FOOTED FALCON Falco vespertinus A
MERLIN Falco columbarius aesalon A
Icelandic Merlin Falco columbarius subaesalon
HOBBY Falco subbuteo A
PEREGRINE Falco peregrinus AE
RING-NECKED PARAKEET Psittacula krameri C1E
RED-BACKED SHRIKE Lanius collurio A
GREAT GREY SHRIKE Lanius excubitor A
WOODCHAT SHRIKE Lanius senator A
GOLDEN ORIOLE Oriolus oriolus A
DIPPER Cinclus cinclus gularis A
JAY Garrulus glandarius rufitergum A
Continental Jay Garrulus glandarius glandarius
MAGPIE Pica pica A
JACKDAW Coloeus monedula spermologus A
Nordic Jackdaw Coloeus monedula monedula
ROOK Corvus frugilegus A
CARRION CROW Corvus corone A
COMMON RAVEN Corvus corax A
COAL TIT Periparus ater britannicus A
Continental Coal Tit Periparus ater ater
MARSH TIT Poecile palustris dresseri A
WILLOW TIT Poecile montanus kleinschmidti A
BLUE TIT Cyanistes caeruleus obscurus A
GREAT TIT Parus major newtoni A
PENDULINE TIT Remiz pendulinus A
BEARDED TIT Panurus biarmicus A
LONG-TAILED TIT Aegithalos caudatus rosaceus A
SKYLARK Alauda arvensis A
SHORELARK Eremophila alpestris A
SAND MARTIN Riparia riparia A
SWALLOW Hirundo rustica AE
HOUSE MARTIN Delichon urbicum A
RED-RUMPED SWALLOW Cecropis daurica rufula A
CETTI'S WARBLER Cettia cetti A
WILLOW WARBLER Phylloscopus trochilus A
Northern Willow Warbler Phylloscopus trochilus acredula
COMMON CHIFFCHAFF Phylloscopus collybita A
Scandinavian Chiffchaff Phylloscopus collybita abietinus
Siberian Chiffchaff Phylloscopus collybita tristis
IBERIAN CHIFFCHAFF Phylloscopus ibericus A
WOOD WARBLER Phylloscopus sibilatrix A
YELLOW-BROWED WARBLER Phylloscopus inornatus A
AQUATIC WARBLER Acrocephalus paludicola A
SEDGE WARBLER Acrocephalus schoenobaenus A
REED WARBLER Acrocephalus scirpaceus A
MARSH WARBLER Acrocephalus palustris A
ICTERINE WARBLER Hippolais icterina A
GRASSHOPPER WARBLER Locustella naevia A
BLACKCAP Sylvia atricapilla A
GARDEN WARBLER Sylvia borin A
LESSER WHITETHROAT Sylvia curruca A
COMMON WHITETHROAT Sylvia communis A
DARTFORD WARBLER Sylvia undata A
WESTERN SUBALPINE WARBLER Sylvia cantillans A
FIRECREST Regulus ignicapilla A
GOLDCREST Regulus regulus A
WREN Troglodytes troglodytes indigenus A
NUTHATCH
Sitta europaea caesia A
TREECREEPER Certhia familiaris brittanica A
ROSE-COLOURED STARLING Pastor roseus A
STARLING Sturnus vulgaris A
BLACKBIRD Turdus merula A
Continental Blackbird Turdus merula merula
FIELDFARE Turdus pilaris A
REDWING Turdus iliacus A
Icelandic Redwing Turdus iliacus coburni
SONG THRUSH Turdus philomelos clarkei A
Continental Song Thrush Turdus philomelos philomelos
MISTLE THRUSH Turdus viscivorus A
SPOTTED FLYCATCHER Muscicapa striata A
ROBIN Erithacus rubecula melophilus A
RED-SPOTTED BLUETHROAT Luscinia svecica A
White-spotted Bluethroat Luscinia svecica cyanecula
NIGHTINGALE Luscinia megarhynchos A
RED-FLANKED BLUETAIL Tarsiger cyanurus AE
PIED FLYCATCHER Ficedula hypoleuca A
BLACK REDSTART Phoenicurus ochruros gibraltariensis A
COMMON REDSTART Phoenicurus phoenicurus A
WHINCHAT Saxicola rubetra A
COMMON STONECHAT Saxicola rubicola hibernans A
NORTHERN WHEATEAR Oenanthe oenanthe A
Greenland Wheatear Oenanthe oenanthe leucorhoa
DESERT WHEATEAR Oenanthe deserti A
PIED WHEATEAR Oenanthe pleschanka A
DUNNOCK Prunella modularis occidentalis A
YELLOW WAGTAIL Motacilla flava flavissima A
Ashy-headed Wagtail Motacilla flava cinereocapilla
Blue-headed Wagtail Motacilla flava flava
Grey-headed Wagtail Motacilla flava thunbergi
EASTERN YELLOW WAGTAIL Motacilla tschutschensis A
CITRINE WAGTAIL Motacilla citreola A
GREY WAGTAIL Motacilla cinerea A
PIED WAGTAIL Motacilla alba yarrellii A
White Wagtail Motacilla alba alba
RICHARDS PIPIT Anthus richardi A
MEADOW PIPIT Anthus pratensis A
TREE PIPIT Anthus trivialis A
RED-THROATED PIPIT Anthus cervinus A
WATER PIPIT Anthus spinoletta A
ROCK PIPIT Anthus petrosus A
Scandinavian Rock Pipit Anthus petrosus littoralis
HOUSE SPARROW Passer domesticus A
TREE SPARROW Passer montanus A
CHAFFINCH Fringilla coelebs gengleri A
Continental Chaffinch Fringilla coelebs coelebs
BRAMBLING Fringilla montifringilla A
HAWFINCH Coccothraustes coccothraustes A
BULLFINCH Pyrrhula pyrrhula pileata A
COMMON ROSEFINCH Carpodacus erythrinus A
GREENFINCH Chloris chloris A
TWITE Linaria flavirostris pipilans A
LINNET Linaria cannabina A
COMMON REDPOLL Acanthis flammea A
LESSER REDPOLL Acanthis cabaret A
COMMON CROSSBILL Loxia curvirostra A
GOLDFINCH Carduelis carduelis britannica A
SISKIN Spinus spinus A
CORN BUNTING Emberiza calandra A
YELLOWHAMMER Emberiza citrinella A
ORTOLAN BUNTING Emberiza hortulana A
CIRL BUNTING Emberiza cirlus A
BLACK-HEADED BUNTING Emberiza melanocephala A
REED BUNTING Emberiza schoeniclus A
LAPLAND BUNTING Calcarius lapponicus A
SNOW BUNTING Plectrophenax nivalis A
IN ADDITION: Reported from the S. Glos recording area but not included in the Systematic List
Channel Wagtail (hybrid) Motacilla flava/ flavissima
Black/ White-bellied Storm Petrel Fregetta tropica/ grallaria
Great Bustard (re-introduction) Otis tarda