James Emerson: Britain Year List 2023 BOU, All records: Top Blockers Record(s) 1 to 91 of 91 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Canada Goose	Branta canadensis	487	98.19	
2	Greylag Goose	Anser anser	481	96.98	
3	Pink-footed Goose	Anser brachyrhynchus	399	80.44	
4	Mute Swan	Cygnus olor	490	98.79	
5	Bewick's Swan	Cygnus columbianus	258	52.02	
6	Whooper Swan	Cygnus cygnus	386	77.82	
7	Egyptian Goose	Alopochen aegyptiaca	391	78.83	
8	Shelduck	Tadorna tadorna	477	96.17	
9	Shoveler	Spatula clypeata	468	94.35	
10	Gadwall	Mareca strepera	464	93.55	
11	Wigeon	Mareca penelope	472	95.16	
12	Mallard	Anas platyrhynchos	489	98.59	
13	Pintail	Anas acuta	435	87.70	
14	Teal	Anas crecca	478	96.37	
15	Pochard	Aythya ferina	455	91.73	
16	Tufted Duck	Aythya fuligula	478	96.37	
17	Scaup	Aythya marila	318	64.11	
18	Common Scoter	Melanitta nigra	378	76.21	
19	Goldeneye	Bucephala clangula	432	87.10	
20	Goosander	Mergus merganser	434	87.50	
21	Pheasant	Phasianus colchicus	483	97.38	
22	Red-legged Partridge	Alectoris rufa	405	81.65	
23	Rock Dove (Feral Pigeon)	Columba livia	417	84.07	
24	Stock Dove	Columba oenas	449	90.52	
25	Woodpigeon	Columba palumbus	490	98.79	
26	Collared Dove	Streptopelia decaocto	484	97.58	
27	Moorhen	Gallinula chloropus	488	98.39	
28	Coot	Fulica atra	483	97.38	
29	Crane	Grus grus	257	51.81	
30	Little Grebe	Tachybaptus ruficollis	466	93.95	
31	Great Crested Grebe	Podiceps cristatus	467	94.15	
32	Oystercatcher	Haematopus ostralegus	471	94.96	
33	Avocet	Recurvirostra avosetta	432	87.10	
34	Lapwing	Vanellus vanellus	479	96.57	
35	Curlew	Numenius arquata	465	93.75	
36	Black-tailed Godwit	Limosa limosa	444	89.52	
37	Redshank	Tringa totanus	470	94.76	
38	Dunlin	Calidris alpina	452	91.13	
39	Black-headed Gull	Chroicocephalus ridibundus	485	97.78	
40	Common Gull	Larus canus	461	92.94	
41	Herring Gull	Larus argentatus	483	97.38	
42	Great Black-backed Gull	Larus marinus	454	91.53	
43	Lesser Black-backed Gull	Larus fuscus	462	93.15	
44	Iceland Gull	Larus glaucoides	109	21.98	
45	Cormorant	Phalacrocorax carbo	485	97.78	
46	Little Egret	Egretta garzetta	473	95.36	
47	Cattle Egret	Bubulcus ibis	336	67.74	
48	Great White Egret	Ardea alba	428	86.29	
49	Grey Heron	Ardea cinerea	484	97.58	
50	Sparrowhawk	Accipiter nisus	469	94.56	
51	Marsh Harrier	Circus aeruginosus	440	88.71	
52	Buzzard	Buteo buteo	487	98.19	
53	Long-eared Owl	Asio otus	203	40.93	
54	Kingfisher	Alcedo atthis	433	87.30	
55	Great Spotted Woodpecker	Dendrocopos major	467	94.15	
56	Green Woodpecker	Picus viridis	406	81.85	
57	Kestrel	Falco tinnunculus	486	97.98	
58	Jay	Garrulus glandarius	470	94.76	
59	Magpie	Pica pica	490	98.79	
60	Jackdaw	Coloeus monedula	488	98.39	
61	Rook	Corvus frugilegus	476	95.97	
62	Carrion Crow	Corvus corone	489	98.59	
63	Coal Tit	Periparus ater	468	94.35	
64	Marsh Tit	Poecile palustris	335	67.54	
65	Blue Tit	Cyanistes caeruleus	488	98.39	
66	Great Tit	Parus major	487	98.19	
67	Bearded Tit	Panurus biarmicus	291	58.67	
68	Cetti's Warbler	Cettia cetti	419	84.48	
69	Long-tailed Tit	Aegithalos caudatus	483	97.38	
70	Blackcap	Sylvia atricapilla	457	92.14	
71	Goldcrest	Regulus regulus	458	92.34	
72	Wren	Troglodytes troglodytes	486	97.98	
73	Nuthatch	Sitta europaea	447	90.12	
74	Treecreeper	Certhia familiaris	438	88.31	
75	Starling	Sturnus vulgaris	487	98.19	
76	Song Thrush	Turdus philomelos	472	95.16	
77	Mistle Thrush	Turdus viscivorus	452	91.13	
78	Redwing	Turdus iliacus	466	93.95	
79	Blackbird	Turdus merula	490	98.79	
80	Robin	Erithacus rubecula	485	97.78	
81	House Sparrow	Passer domesticus	488	98.39	
82	Dunnock	Prunella modularis	481	96.98	
83	Grey Wagtail	Motacilla cinerea	451	90.93	
84	Pied Wagtail	Motacilla alba	478	96.37	
85	Meadow Pipit	Anthus pratensis	467	94.15	
86	Chaffinch	Fringilla coelebs	484	97.58	
87	Greenfinch	Chloris chloris	471	94.96	
88	Lesser Redpoll	Acanthis cabaret	345	69.56	
89	Goldfinch	Carduelis carduelis	486	97.98	
90	Siskin	Spinus spinus	425	85.69	
91	Reed Bunting	Emberiza schoeniclus	463	93.35