David Guard: Britain Year List 2020 BOU, All records: Top Blockers Record(s) 1 to 82 of 82 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Canada Goose	Branta canadensis	397	96.59	
2	Greylag Goose	Anser anser	390	94.89	
3	Pink-footed Goose	Anser brachyrhynchus	312	75.91	
4	Mute Swan	Cygnus olor	399	97.08	
5	Egyptian Goose	Alopochen aegyptiaca	304	73.97	
6	Mandarin Duck	Aix galericulata	250	60.83	
7	Shoveler	Spatula clypeata	379	92.21	
8	Gadwall	Mareca strepera	381	92.70	
9	Wigeon	Mareca penelope	387	94.16	
10	Mallard	Anas platyrhynchos	401	97.57	
11	Teal	Anas crecca	386	93.92	
12	Tufted Duck	Aythya fuligula	395	96.11	
13	Goldeneye	Bucephala clangula	345	83.94	
14	Smew	Mergellus albellus	189	45.99	
15	Goosander	Mergus merganser	348	84.67	
16	Pheasant	Phasianus colchicus	393	95.62	
17	Red-legged Partridge	Alectoris rufa	322	78.35	
18	Swift	Apus apus	352	85.64	
19	Rock Dove (Feral Pigeon)	Columba livia	307	74.70	
20	Stock Dove	Columba oenas	362	88.08	
21	Woodpigeon	Columba palumbus	402	97.81	
22	Collared Dove	Streptopelia decaocto	391	95.13	
23	Moorhen	Gallinula chloropus	397	96.59	
24	Coot	Fulica atra	396	96.35	
25	Little Grebe	Tachybaptus ruficollis	377	91.73	
26	Great Crested Grebe	Podiceps cristatus	378	91.97	
27	Oystercatcher	Haematopus ostralegus	380	92.46	
28	Lapwing	Vanellus vanellus	394	95.86	
29	Curlew	Numenius arquata	374	91.00	
30	Black-headed Gull	Chroicocephalus ridibundus	394	95.86	
31	Herring Gull	Larus argentatus	389	94.65	
32	Lesser Black-backed Gull	Larus fuscus	374	91.00	
33	Cormorant	Phalacrocorax carbo	393	95.62	
34	Little Egret	Egretta garzetta	388	94.40	
35	Great White Egret	Ardea alba	337	82.00	
36	Grey Heron	Ardea cinerea	393	95.62	
37	Sparrowhawk	Accipiter nisus	384	93.43	
38	Red Kite	Milvus milvus	368	89.54	
39	Buzzard	Buteo buteo	391	95.13	
40	Tawny Owl	Strix aluco	311	75.67	
41	Kingfisher	Alcedo atthis	358	87.10	
42	Great Spotted Woodpecker	Dendrocopos major	382	92.94	
43	Green Woodpecker	Picus viridis	340	82.73	
44	Kestrel	Falco tinnunculus	394	95.86	
45	Jay	Garrulus glandarius	376	91.48	
46	Magpie	Pica pica	399	97.08	
47	Jackdaw	Coloeus monedula	393	95.62	
48	Rook	Corvus frugilegus	388	94.40	
49	Carrion Crow	Corvus corone	398	96.84	
50	Raven	Corvus corax	341	82.97	
51	Coal Tit	Periparus ater	387	94.16	
52	Blue Tit	Cyanistes caeruleus	398	96.84	
53	Great Tit	Parus major	398	96.84	
54	Skylark	Alauda arvensis	369	89.78	
55	Swallow	Hirundo rustica	368	89.54	
56	House Martin	Delichon urbicum	352	85.64	
57	Long-tailed Tit	Aegithalos caudatus	392	95.38	
58	Willow Warbler	Phylloscopus trochilus	333	81.02	
59	Chiffchaff	Phylloscopus collybita	373	90.75	
60	Blackcap	Sylvia atricapilla	356	86.62	
61	Garden Warbler	Sylvia borin	260	63.26	
62	Whitethroat	Curruca communis	333	81.02	
63	Goldcrest	Regulus regulus	368	89.54	
64	Wren	Troglodytes troglodytes	395	96.11	
65	Nuthatch	Sitta europaea	369	89.78	
66	Starling	Sturnus vulgaris	397	96.59	
67	Song Thrush	Turdus philomelos	389	94.65	
68	Mistle Thrush	Turdus viscivorus	369	89.78	
69	Redwing	Turdus iliacus	384	93.43	
70	Blackbird	Turdus merula	397	96.59	
71	Fieldfare	Turdus pilaris	361	87.83	
72	Robin	Erithacus rubecula	398	96.84	
73	House Sparrow	Passer domesticus	396	96.35	
74	Dunnock	Prunella modularis	394	95.86	
75	Pied Wagtail	Motacilla alba	395	96.11	
76	Meadow Pipit	Anthus pratensis	373	90.75	
77	Chaffinch	Fringilla coelebs	397	96.59	
78	Bullfinch	Pyrrhula pyrrhula	369	89.78	
79	Greenfinch	Chloris chloris	377	91.73	
80	Goldfinch	Carduelis carduelis	393	95.62	
81	Yellowhammer	Emberiza citrinella	349	84.91	
82	Reed Bunting	Emberiza schoeniclus	377	91.73