Allan Stevenson: Britain Life List BOU, All records: Top Blockers Record(s) 1 to 56 of 56 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Canada Goose	Branta canadensis	2158	91.95	
2	Greylag Goose	Anser anser	2111	89.94	
3	Pink-footed Goose	Anser brachyrhynchus	1895	80.74	
4	Mute Swan	Cygnus olor	2177	92.76	
5	Mallard	Anas platyrhynchos	2148	91.52	
6	Tufted Duck	Aythya fuligula	2100	89.48	
7	Swift	Apus apus	2040	86.92	
8	Rock Dove (Feral Pigeon)	Columba livia	1882	80.19	
9	Stock Dove	Columba oenas	1953	83.21	
10	Woodpigeon	Columba palumbus	2101	89.52	
11	Collared Dove	Streptopelia decaocto	2068	88.11	
12	Oystercatcher	Haematopus ostralegus	2075	88.41	
13	Black-headed Gull	Chroicocephalus ridibundus	2069	88.16	
14	Common Gull	Larus canus	1986	84.62	
15	Herring Gull	Larus argentatus	2077	88.50	
16	Lesser Black-backed Gull	Larus fuscus	2014	85.81	
17	Grey Heron	Ardea cinerea	2095	89.26	
18	Sparrowhawk	Accipiter nisus	2040	86.92	
19	Goshawk	Accipiter gentilis	1559	66.43	
20	Buzzard	Buteo buteo	2085	88.84	
21	Tawny Owl	Strix aluco	1902	81.04	
22	Great Spotted Woodpecker	Dendrocopos major	2044	87.09	
23	Kestrel	Falco tinnunculus	2077	88.50	
24	Peregrine	Falco peregrinus	2007	85.51	
25	Magpie	Pica pica	2089	89.01	
26	Jackdaw	Coloeus monedula	2069	88.16	
27	Carrion Crow	Corvus corone	2079	88.58	
28	Raven	Corvus corax	1956	83.34	
29	Waxwing	Bombycilla garrulus	1784	76.01	
30	Coal Tit	Periparus ater	2038	86.83	
31	Blue Tit	Cyanistes caeruleus	2099	89.43	
32	Great Tit	Parus major	2088	88.96	
33	Long-tailed Tit	Aegithalos caudatus	2065	87.98	
34	Willow Warbler	Phylloscopus trochilus	1921	81.85	
35	Chiffchaff	Phylloscopus collybita	2016	85.90	
36	Blackcap	Sylvia atricapilla	2000	85.22	
37	Goldcrest	Regulus regulus	2003	85.34	
38	Wren	Troglodytes troglodytes	2060	87.77	
39	Nuthatch	Sitta europaea	2017	85.94	
40	Treecreeper	Certhia familiaris	1998	85.13	
41	Starling	Sturnus vulgaris	2083	88.75	
42	Song Thrush	Turdus philomelos	2044	87.09	
43	Mistle Thrush	Turdus viscivorus	1979	84.32	
44	Redwing	Turdus iliacus	2004	85.39	
45	Blackbird	Turdus merula	2087	88.92	
46	Fieldfare	Turdus pilaris	1991	84.83	
47	Robin	Erithacus rubecula	2095	89.26	
48	House Sparrow	Passer domesticus	2068	88.11	
49	Dunnock	Prunella modularis	2062	87.86	
50	Pied Wagtail	Motacilla alba	2065	87.98	
51	Chaffinch	Fringilla coelebs	2070	88.20	
52	Bullfinch	Pyrrhula pyrrhula	1995	85.00	
53	Greenfinch	Chloris chloris	2053	87.47	
54	Lesser Redpoll	Acanthis cabaret	1748	74.48	
55	Goldfinch	Carduelis carduelis	2079	88.58	
56	Siskin	Spinus spinus	1967	83.81