Jim Nicholson: Britain Year List 2019 BOU, All records: Top Blockers Record(s) 1 to 193 of 193 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Brent Goose	Branta bernicla	294	77.37	
2	Canada Goose	Branta canadensis	365	96.05	
3	Barnacle Goose	Branta leucopsis	280	73.68	
4	Greylag Goose	Anser anser	361	95.00	
5	Pink-footed Goose	Anser brachyrhynchus	292	76.84	
6	Mute Swan	Cygnus olor	370	97.37	
7	Whooper Swan	Cygnus cygnus	284	74.74	
8	Egyptian Goose	Alopochen aegyptiaca	286	75.26	
9	Shelduck	Tadorna tadorna	358	94.21	
10	Garganey	Spatula querquedula	255	67.11	
11	Shoveler	Spatula clypeata	358	94.21	
12	Gadwall	Mareca strepera	354	93.16	
13	Wigeon	Mareca penelope	361	95.00	
14	Mallard	Anas platyrhynchos	371	97.63	
15	Pintail	Anas acuta	322	84.74	
16	Teal	Anas crecca	363	95.53	
17	Pochard	Aythya ferina	339	89.21	
18	Tufted Duck	Aythya fuligula	362	95.26	
19	Scaup	Aythya marila	225	59.21	
20	Eider	Somateria mollissima	275	72.37	
21	Surf Scoter	Melanitta perspicillata	56	14.74	
22	Velvet Scoter	Melanitta fusca	152	40.00	
23	White-winged Scoter	Melanitta deglandi	19	5.00	
24	Common Scoter	Melanitta nigra	277	72.89	
25	Long-tailed Duck	Clangula hyemalis	245	64.47	
26	Goldeneye	Bucephala clangula	326	85.79	
27	Goosander	Mergus merganser	327	86.05	
28	Red-breasted Merganser	Mergus serrator	277	72.89	
29	Red Grouse	Lagopus lagopus	193	50.79	
30	Grey Partridge	Perdix perdix	245	64.47	
31	Pheasant	Phasianus colchicus	361	95.00	
32	Red-legged Partridge	Alectoris rufa	324	85.26	
33	Swift	Apus apus	330	86.84	
34	Cuckoo	Cuculus canorus	290	76.32	
35	Rock Dove (Feral Pigeon)	Columba livia	301	79.21	
36	Stock Dove	Columba oenas	337	88.68	
37	Woodpigeon	Columba palumbus	372	97.89	
38	Collared Dove	Streptopelia decaocto	360	94.74	
39	Water Rail	Rallus aquaticus	297	78.16	
40	Moorhen	Gallinula chloropus	366	96.32	
41	Coot	Fulica atra	363	95.53	
42	Crane	Grus grus	181	47.63	
43	Little Grebe	Tachybaptus ruficollis	352	92.63	
44	Red-necked Grebe	Podiceps grisegena	156	41.05	
45	Great Crested Grebe	Podiceps cristatus	358	94.21	
46	Slavonian Grebe	Podiceps auritus	217	57.11	
47	Oystercatcher	Haematopus ostralegus	354	93.16	
48	Avocet	Recurvirostra avosetta	320	84.21	
49	Grey Plover	Pluvialis squatarola	289	76.05	
50	Golden Plover	Pluvialis apricaria	314	82.63	
51	Ringed Plover	Charadrius hiaticula	331	87.11	
52	Lapwing	Vanellus vanellus	360	94.74	
53	Eurasian Whimbrel	Numenius phaeopus	261	68.68	
54	Curlew	Numenius arquata	357	93.95	
55	Bar-tailed Godwit	Limosa lapponica	286	75.26	
56	Black-tailed Godwit	Limosa limosa	341	89.74	
57	Jack Snipe	Lymnocryptes minimus	191	50.26	
58	Woodcock	Scolopax rusticola	216	56.84	
59	Snipe	Gallinago gallinago	332	87.37	
60	Common Sandpiper	Actitis hypoleucos	301	79.21	
61	Wood Sandpiper	Tringa glareola	220	57.89	
62	Redshank	Tringa totanus	353	92.89	
63	Spotted Redshank	Tringa erythropus	241	63.42	
64	Greenshank	Tringa nebularia	295	77.63	
65	Turnstone	Arenaria interpres	332	87.37	
66	Knot	Calidris canutus	290	76.32	
67	Ruff	Calidris pugnax	302	79.47	
68	Curlew Sandpiper	Calidris ferruginea	193	50.79	
69	Sanderling	Calidris alba	289	76.05	
70	Dunlin	Calidris alpina	344	90.53	
71	Purple Sandpiper	Calidris maritima	215	56.58	
72	Little Stint	Calidris minuta	153	40.26	
73	Pectoral Sandpiper	Calidris melanotos	70	18.42	
74	Black Tern	Chlidonias niger	190	50.00	
75	Arctic Tern	Sterna paradisaea	233	61.32	
76	Common Tern	Sterna hirundo	311	81.84	
77	Sandwich Tern	Thalasseus sandvicensis	288	75.79	
78	Kittiwake	Rissa tridactyla	297	78.16	
79	Black-headed Gull	Chroicocephalus ridibundus	370	97.37	
80	Mediterranean Gull	Ichthyaetus melanocephalus	297	78.16	
81	Common Gull	Larus canus	341	89.74	
82	Herring Gull	Larus argentatus	365	96.05	
83	Great Black-backed Gull	Larus marinus	351	92.37	
84	Lesser Black-backed Gull	Larus fuscus	355	93.42	
85	Puffin	Fratercula arctica	219	57.63	
86	Black Guillemot	Cepphus grylle	167	43.95	
87	Razorbill	Alca torda	276	72.63	
88	Common Guillemot	Uria aalge	300	78.95	
89	Red-throated Diver	Gavia stellata	275	72.37	
90	Black-throated Diver	Gavia arctica	172	45.26	
91	Great Northern Diver	Gavia immer	228	60.00	
92	Fulmar	Fulmarus glacialis	295	77.63	
93	Manx Shearwater	Puffinus puffinus	198	52.11	
94	Gannet	Morus bassanus	316	83.16	
95	Cormorant	Phalacrocorax carbo	366	96.32	
96	Shag	Gulosus aristotelis	286	75.26	
97	Spoonbill	Platalea leucorodia	260	68.42	
98	Bittern	Botaurus stellaris	212	55.79	
99	Little Egret	Egretta garzetta	357	93.95	
100	Cattle Egret	Bubulcus ibis	242	63.68	
101	Great White Egret	Ardea alba	302	79.47	
102	Grey Heron	Ardea cinerea	363	95.53	
103	Osprey	Pandion haliaetus	239	62.89	
104	Golden Eagle	Aquila chrysaetos	99	26.05	
105	Sparrowhawk	Accipiter nisus	348	91.58	
106	Marsh Harrier	Circus aeruginosus	330	86.84	
107	Red Kite	Milvus milvus	343	90.26	
108	Buzzard	Buteo buteo	366	96.32	
109	Barn Owl	Tyto alba	296	77.89	
110	Short-eared Owl	Asio flammeus	236	62.11	
111	Tawny Owl	Strix aluco	291	76.58	
112	Kingfisher	Alcedo atthis	329	86.58	
113	Great Spotted Woodpecker	Dendrocopos major	355	93.42	
114	Green Woodpecker	Picus viridis	314	82.63	
115	Kestrel	Falco tinnunculus	356	93.68	
116	Merlin	Falco columbarius	236	62.11	
117	Hobby	Falco subbuteo	263	69.21	
118	Peregrine	Falco peregrinus	331	87.11	
119	Ring-necked Parakeet	Psittacula krameri	224	58.95	
120	Jay	Garrulus glandarius	356	93.68	
121	Magpie	Pica pica	369	97.11	
122	Jackdaw	Coloeus monedula	366	96.32	
123	Rook	Corvus frugilegus	362	95.26	
124	Carrion Crow	Corvus corone	370	97.37	
125	Hooded Crow	Corvus cornix	185	48.68	
126	Raven	Corvus corax	321	84.47	
127	Waxwing	Bombycilla garrulus	203	53.42	
128	Coal Tit	Periparus ater	357	93.95	
129	Marsh Tit	Poecile palustris	286	75.26	
130	Blue Tit	Cyanistes caeruleus	371	97.63	
131	Great Tit	Parus major	372	97.89	
132	Bearded Tit	Panurus biarmicus	242	63.68	
133	Skylark	Alauda arvensis	347	91.32	
134	Shore Lark	Eremophila alpestris	133	35.00	
135	Sand Martin	Riparia riparia	332	87.37	
136	Swallow	Hirundo rustica	341	89.74	
137	House Martin	Delichon urbicum	334	87.89	
138	Cetti's Warbler	Cettia cetti	299	78.68	
139	Long-tailed Tit	Aegithalos caudatus	360	94.74	
140	Yellow-browed Warbler	Phylloscopus inornatus	174	45.79	
141	Willow Warbler	Phylloscopus trochilus	321	84.47	
142	Chiffchaff	Phylloscopus collybita	343	90.26	
143	Sedge Warbler	Acrocephalus schoenobaenus	318	83.68	
144	Reed Warbler	Acrocephalus scirpaceus	316	83.16	
145	Grasshopper Warbler	Locustella naevia	188	49.47	
146	Blackcap	Sylvia atricapilla	338	88.95	
147	Garden Warbler	Sylvia borin	269	70.79	
148	Lesser Whitethroat	Curruca curruca	260	68.42	
149	Whitethroat	Curruca communis	324	85.26	
150	Goldcrest	Regulus regulus	340	89.47	
151	Wren	Troglodytes troglodytes	364	95.79	
152	Nuthatch	Sitta europaea	336	88.42	
153	Treecreeper	Certhia familiaris	335	88.16	
154	Starling	Sturnus vulgaris	369	97.11	
155	Song Thrush	Turdus philomelos	361	95.00	
156	Mistle Thrush	Turdus viscivorus	338	88.95	
157	Redwing	Turdus iliacus	344	90.53	
158	Blackbird	Turdus merula	372	97.89	
159	Fieldfare	Turdus pilaris	331	87.11	
160	Ring Ouzel	Turdus torquatus	212	55.79	
161	Spotted Flycatcher	Muscicapa striata	246	64.74	
162	Robin	Erithacus rubecula	366	96.32	
163	Pied Flycatcher	Ficedula hypoleuca	225	59.21	
164	Redstart	Phoenicurus phoenicurus	258	67.89	
165	Whinchat	Saxicola rubetra	251	66.05	
166	Stonechat	Saxicola rubicola	344	90.53	
167	Wheatear	Oenanthe oenanthe	313	82.37	
168	Dipper	Cinclus cinclus	251	66.05	
169	Tree Sparrow	Passer montanus	281	73.95	
170	House Sparrow	Passer domesticus	368	96.84	
171	Dunnock	Prunella modularis	366	96.32	
172	Yellow Wagtail	Motacilla flava	277	72.89	
173	Grey Wagtail	Motacilla cinerea	340	89.47	
174	Pied Wagtail	Motacilla alba	362	95.26	
175	Meadow Pipit	Anthus pratensis	343	90.26	
176	Tree Pipit	Anthus trivialis	233	61.32	
177	Water Pipit	Anthus spinoletta	206	54.21	
178	Rock Pipit	Anthus petrosus	299	78.68	
179	Chaffinch	Fringilla coelebs	367	96.58	
180	Brambling	Fringilla montifringilla	282	74.21	
181	Bullfinch	Pyrrhula pyrrhula	344	90.53	
182	Greenfinch	Chloris chloris	355	93.42	
183	Twite	Linaria flavirostris	200	52.63	
184	Linnet	Linaria cannabina	348	91.58	
185	Common Redpoll	Acanthis flammea	133	35.00	
186	Lesser Redpoll	Acanthis cabaret	261	68.68	
187	Common Crossbill	Loxia curvirostra	240	63.16	
188	Goldfinch	Carduelis carduelis	364	95.79	
189	Siskin	Spinus spinus	328	86.32	
190	Snow Bunting	Plectrophenax nivalis	215	56.58	
191	Corn Bunting	Emberiza calandra	233	61.32	
192	Yellowhammer	Emberiza citrinella	325	85.53	
193	Reed Bunting	Emberiza schoeniclus	352	92.63