Sam Finch: Britain Life List BOU, All records: Top Blockers Record(s) 1 to 174 of 174 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Brent Goose	Branta bernicla	1958	83.50	
2	Canada Goose	Branta canadensis	2157	91.98	
3	Greylag Goose	Anser anser	2110	89.98	
4	White-fronted Goose	Anser albifrons	1786	76.16	
5	Mute Swan	Cygnus olor	2176	92.79	
6	Egyptian Goose	Alopochen aegyptiaca	1945	82.94	
7	Shelduck	Tadorna tadorna	2103	89.68	
8	Mandarin Duck	Aix galericulata	1917	81.75	
9	Shoveler	Spatula clypeata	2072	88.36	
10	Gadwall	Mareca strepera	2050	87.42	
11	Wigeon	Mareca penelope	2085	88.91	
12	Mallard	Anas platyrhynchos	2147	91.56	
13	Pintail	Anas acuta	1977	84.31	
14	Teal	Anas crecca	2092	89.21	
15	Pochard	Aythya ferina	2049	87.38	
16	Ring-necked Duck	Aythya collaris	1513	64.52	
17	Tufted Duck	Aythya fuligula	2099	89.51	
18	Scaup	Aythya marila	1770	75.48	
19	Lesser Scaup	Aythya affinis	1247	53.18	
20	Eider	Somateria mollissima	1891	80.64	
21	Long-tailed Duck	Clangula hyemalis	1733	73.90	
22	Goldeneye	Bucephala clangula	1978	84.35	
23	Goosander	Mergus merganser	1965	83.80	
24	Red-breasted Merganser	Mergus serrator	1868	79.66	
25	Red Grouse	Lagopus lagopus	1714	73.09	
26	Pheasant	Phasianus colchicus	2119	90.36	
27	Swift	Apus apus	2039	86.95	
28	Cuckoo	Cuculus canorus	1914	81.62	
29	Rock Dove (Feral Pigeon)	Columba livia	1881	80.21	
30	Stock Dove	Columba oenas	1952	83.24	
31	Woodpigeon	Columba palumbus	2100	89.55	
32	Collared Dove	Streptopelia decaocto	2067	88.14	
33	Moorhen	Gallinula chloropus	2107	89.85	
34	Coot	Fulica atra	2103	89.68	
35	Little Grebe	Tachybaptus ruficollis	2050	87.42	
36	Great Crested Grebe	Podiceps cristatus	2075	88.49	
37	Slavonian Grebe	Podiceps auritus	1713	73.05	
38	Oystercatcher	Haematopus ostralegus	2074	88.44	
39	Avocet	Recurvirostra avosetta	1968	83.92	
40	Grey Plover	Pluvialis squatarola	1849	78.85	
41	Golden Plover	Pluvialis apricaria	1925	82.09	
42	American Golden Plover	Pluvialis dominica	1087	46.35	
43	Ringed Plover	Charadrius hiaticula	1973	84.14	
44	Lapwing	Vanellus vanellus	2077	88.57	
45	Sociable Plover	Vanellus gregarius	558	23.80	
46	Eurasian Whimbrel	Numenius phaeopus	1826	77.87	
47	Curlew	Numenius arquata	2043	87.12	
48	Bar-tailed Godwit	Limosa lapponica	1878	80.09	
49	Black-tailed Godwit	Limosa limosa	1977	84.31	
50	Snipe	Gallinago gallinago	1996	85.12	
51	Common Sandpiper	Actitis hypoleucos	1910	81.45	
52	Spotted Sandpiper	Actitis macularius	1042	44.43	
53	Green Sandpiper	Tringa ochropus	1819	77.57	
54	Wood Sandpiper	Tringa glareola	1643	70.06	
55	Redshank	Tringa totanus	2039	86.95	
56	Spotted Redshank	Tringa erythropus	1779	75.86	
57	Greenshank	Tringa nebularia	1894	80.77	
58	Turnstone	Arenaria interpres	1960	83.58	
59	Knot	Calidris canutus	1855	79.10	
60	Curlew Sandpiper	Calidris ferruginea	1688	71.98	
61	Sanderling	Calidris alba	1874	79.91	
62	Dunlin	Calidris alpina	1984	84.61	
63	Purple Sandpiper	Calidris maritima	1713	73.05	
64	Baird's Sandpiper	Calidris bairdii	901	38.42	
65	Little Stint	Calidris minuta	1699	72.45	
66	Pectoral Sandpiper	Calidris melanotos	1492	63.62	
67	Arctic Tern	Sterna paradisaea	1756	74.88	
68	Common Tern	Sterna hirundo	1966	83.84	
69	Sandwich Tern	Thalasseus sandvicensis	1863	79.45	
70	Kittiwake	Rissa tridactyla	1897	80.90	
71	Sabine's Gull	Xema sabini	1205	51.39	
72	Black-headed Gull	Chroicocephalus ridibundus	2068	88.19	
73	Mediterranean Gull	Ichthyaetus melanocephalus	1832	78.12	
74	Common Gull	Larus canus	1985	84.65	
75	Herring Gull	Larus argentatus	2076	88.53	
76	Great Black-backed Gull	Larus marinus	1993	84.99	
77	Glaucous Gull	Larus hyperboreus	1452	61.92	
78	Lesser Black-backed Gull	Larus fuscus	2013	85.84	
79	American Herring Gull	Larus smithsonianus	307	13.09	
80	Iceland Gull	Larus glaucoides	1472	62.77	
81	Arctic Skua	Stercorarius parasiticus	1596	68.06	
82	Great Skua	Stercorarius skua	1588	67.72	
83	Black Guillemot	Cepphus grylle	1602	68.32	
84	Razorbill	Alca torda	1894	80.77	
85	Common Guillemot	Uria aalge	1919	81.83	
86	Red-throated Diver	Gavia stellata	1764	75.22	
87	Black-throated Diver	Gavia arctica	1630	69.51	
88	Great Northern Diver	Gavia immer	1775	75.69	
89	Fulmar	Fulmarus glacialis	1916	81.71	
90	Sooty Shearwater	Ardenna grisea	1295	55.22	
91	Great Shearwater	Ardenna gravis	853	36.38	
92	Manx Shearwater	Puffinus puffinus	1695	72.28	
93	Gannet	Morus bassanus	1979	84.39	
94	Cormorant	Phalacrocorax carbo	2100	89.55	
95	Shag	Gulosus aristotelis	1945	82.94	
96	Bittern	Botaurus stellaris	1823	77.74	
97	Little Egret	Egretta garzetta	2062	87.93	
98	Cattle Egret	Bubulcus ibis	1632	69.59	
99	Great White Egret	Ardea alba	1808	77.10	
100	Grey Heron	Ardea cinerea	2094	89.30	
101	Osprey	Pandion haliaetus	1874	79.91	
102	Golden Eagle	Aquila chrysaetos	1499	63.92	
103	Sparrowhawk	Accipiter nisus	2038	86.91	
104	Marsh Harrier	Circus aeruginosus	1976	84.26	
105	Hen Harrier	Circus cyaneus	1808	77.10	
106	Red Kite	Milvus milvus	2029	86.52	
107	Buzzard	Buteo buteo	2084	88.87	
108	Barn Owl	Tyto alba	1951	83.20	
109	Short-eared Owl	Asio flammeus	1797	76.63	
110	Tawny Owl	Strix aluco	1901	81.07	
111	Hoopoe	Upupa epops	1340	57.14	
112	Kingfisher	Alcedo atthis	2031	86.61	
113	Great Spotted Woodpecker	Dendrocopos major	2043	87.12	
114	Green Woodpecker	Picus viridis	1978	84.35	
115	Kestrel	Falco tinnunculus	2076	88.53	
116	Merlin	Falco columbarius	1751	74.67	
117	Hobby	Falco subbuteo	1852	78.98	
118	Peregrine	Falco peregrinus	2005	85.50	
119	Ring-necked Parakeet	Psittacula krameri	1789	76.29	
120	Jay	Garrulus glandarius	2047	87.29	
121	Magpie	Pica pica	2088	89.04	
122	Chough	Pyrrhocorax pyrrhocorax	1641	69.98	
123	Jackdaw	Coloeus monedula	2068	88.19	
124	Rook	Corvus frugilegus	2038	86.91	
125	Carrion Crow	Corvus corone	2078	88.61	
126	Hooded Crow	Corvus cornix	1701	72.54	
127	Raven	Corvus corax	1955	83.37	
128	Coal Tit	Periparus ater	2037	86.87	
129	Blue Tit	Cyanistes caeruleus	2098	89.47	
130	Great Tit	Parus major	2087	89.00	
131	Skylark	Alauda arvensis	1999	85.25	
132	Sand Martin	Riparia riparia	1970	84.01	
133	Swallow	Hirundo rustica	2031	86.61	
134	House Martin	Delichon urbicum	2007	85.59	
135	Long-tailed Tit	Aegithalos caudatus	2064	88.02	
136	Willow Warbler	Phylloscopus trochilus	1920	81.88	
137	Chiffchaff	Phylloscopus collybita	2015	85.93	
138	Sedge Warbler	Acrocephalus schoenobaenus	1900	81.02	
139	Reed Warbler	Acrocephalus scirpaceus	1902	81.11	
140	Blackcap	Sylvia atricapilla	1999	85.25	
141	Whitethroat	Curruca communis	1939	82.69	
142	Goldcrest	Regulus regulus	2002	85.37	
143	Wren	Troglodytes troglodytes	2059	87.80	
144	Nuthatch	Sitta europaea	2016	85.97	
145	Treecreeper	Certhia familiaris	1997	85.16	
146	Starling	Sturnus vulgaris	2082	88.78	
147	Song Thrush	Turdus philomelos	2043	87.12	
148	Mistle Thrush	Turdus viscivorus	1978	84.35	
149	Redwing	Turdus iliacus	2003	85.42	
150	Blackbird	Turdus merula	2086	88.96	
151	Fieldfare	Turdus pilaris	1990	84.86	
152	Ring Ouzel	Turdus torquatus	1679	71.60	
153	Spotted Flycatcher	Muscicapa striata	1814	77.36	
154	Robin	Erithacus rubecula	2094	89.30	
155	Stonechat	Saxicola rubicola	1978	84.35	
156	Wheatear	Oenanthe oenanthe	1940	82.73	
157	Dipper	Cinclus cinclus	1873	79.87	
158	House Sparrow	Passer domesticus	2067	88.14	
159	Dunnock	Prunella modularis	2061	87.89	
160	Grey Wagtail	Motacilla cinerea	1994	85.03	
161	Pied Wagtail	Motacilla alba	2064	88.02	
162	Meadow Pipit	Anthus pratensis	1973	84.14	
163	Rock Pipit	Anthus petrosus	1872	79.83	
164	Chaffinch	Fringilla coelebs	2069	88.23	
165	Bullfinch	Pyrrhula pyrrhula	1994	85.03	
166	Greenfinch	Chloris chloris	2052	87.51	
167	Twite	Linaria flavirostris	1606	68.49	
168	Linnet	Linaria cannabina	1986	84.69	
169	Arctic Redpoll	Acanthis hornemanni	981	41.83	
170	Common Crossbill	Loxia curvirostra	1673	71.34	
171	Goldfinch	Carduelis carduelis	2078	88.61	
172	Siskin	Spinus spinus	1966	83.84	
173	Snow Bunting	Plectrophenax nivalis	1686	71.90	
174	Reed Bunting	Emberiza schoeniclus	1985	84.65