Charles Farrell: Britain Year List 2019 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	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	Egyptian Goose	Alopochen aegyptiaca	286	75.26	
8	Shelduck	Tadorna tadorna	358	94.21	
9	Mandarin Duck	Aix galericulata	263	69.21	
10	Shoveler	Spatula clypeata	358	94.21	
11	Gadwall	Mareca strepera	354	93.16	
12	Wigeon	Mareca penelope	361	95.00	
13	Mallard	Anas platyrhynchos	371	97.63	
14	Pintail	Anas acuta	322	84.74	
15	Teal	Anas crecca	363	95.53	
16	Red-crested Pochard	Netta rufina	195	51.32	
17	Pochard	Aythya ferina	339	89.21	
18	Tufted Duck	Aythya fuligula	362	95.26	
19	Scaup	Aythya marila	225	59.21	
20	Common Scoter	Melanitta nigra	277	72.89	
21	Goldeneye	Bucephala clangula	326	85.79	
22	Smew	Mergellus albellus	188	49.47	
23	Goosander	Mergus merganser	327	86.05	
24	Red-breasted Merganser	Mergus serrator	277	72.89	
25	Pheasant	Phasianus colchicus	361	95.00	
26	Red-legged Partridge	Alectoris rufa	324	85.26	
27	Nightjar	Caprimulgus europaeus	147	38.68	
28	Swift	Apus apus	330	86.84	
29	Cuckoo	Cuculus canorus	290	76.32	
30	Rock Dove (Feral Pigeon)	Columba livia	301	79.21	
31	Stock Dove	Columba oenas	337	88.68	
32	Woodpigeon	Columba palumbus	372	97.89	
33	Turtle Dove	Streptopelia turtur	185	48.68	
34	Collared Dove	Streptopelia decaocto	360	94.74	
35	Water Rail	Rallus aquaticus	297	78.16	
36	Moorhen	Gallinula chloropus	366	96.32	
37	Coot	Fulica atra	363	95.53	
38	Little Grebe	Tachybaptus ruficollis	352	92.63	
39	Great Crested Grebe	Podiceps cristatus	358	94.21	
40	Black-necked Grebe	Podiceps nigricollis	234	61.58	
41	Stone-curlew	Burhinus oedicnemus	129	33.95	
42	Oystercatcher	Haematopus ostralegus	354	93.16	
43	Avocet	Recurvirostra avosetta	320	84.21	
44	Golden Plover	Pluvialis apricaria	314	82.63	
45	Ringed Plover	Charadrius hiaticula	331	87.11	
46	Lapwing	Vanellus vanellus	360	94.74	
47	Eurasian Whimbrel	Numenius phaeopus	261	68.68	
48	Curlew	Numenius arquata	357	93.95	
49	Black-tailed Godwit	Limosa limosa	341	89.74	
50	Woodcock	Scolopax rusticola	216	56.84	
51	Snipe	Gallinago gallinago	332	87.37	
52	Common Sandpiper	Actitis hypoleucos	301	79.21	
53	Green Sandpiper	Tringa ochropus	282	74.21	
54	Redshank	Tringa totanus	353	92.89	
55	Spotted Redshank	Tringa erythropus	241	63.42	
56	Greenshank	Tringa nebularia	295	77.63	
57	Turnstone	Arenaria interpres	332	87.37	
58	Knot	Calidris canutus	290	76.32	
59	Ruff	Calidris pugnax	302	79.47	
60	Curlew Sandpiper	Calidris ferruginea	193	50.79	
61	Sanderling	Calidris alba	289	76.05	
62	Dunlin	Calidris alpina	344	90.53	
63	Little Tern	Sternula albifrons	220	57.89	
64	Arctic Tern	Sterna paradisaea	233	61.32	
65	Common Tern	Sterna hirundo	311	81.84	
66	Sandwich Tern	Thalasseus sandvicensis	288	75.79	
67	Little Gull	Hydrocoloeus minutus	221	58.16	
68	Kittiwake	Rissa tridactyla	297	78.16	
69	Black-headed Gull	Chroicocephalus ridibundus	370	97.37	
70	Mediterranean Gull	Ichthyaetus melanocephalus	297	78.16	
71	Common Gull	Larus canus	341	89.74	
72	Herring Gull	Larus argentatus	365	96.05	
73	Great Black-backed Gull	Larus marinus	351	92.37	
74	Lesser Black-backed Gull	Larus fuscus	355	93.42	
75	Puffin	Fratercula arctica	219	57.63	
76	Black Guillemot	Cepphus grylle	167	43.95	
77	Razorbill	Alca torda	276	72.63	
78	Common Guillemot	Uria aalge	300	78.95	
79	Black-throated Diver	Gavia arctica	172	45.26	
80	Fulmar	Fulmarus glacialis	295	77.63	
81	Gannet	Morus bassanus	316	83.16	
82	Cormorant	Phalacrocorax carbo	366	96.32	
83	Shag	Gulosus aristotelis	286	75.26	
84	Glossy Ibis	Plegadis falcinellus	109	28.68	
85	Bittern	Botaurus stellaris	212	55.79	
86	Little Egret	Egretta garzetta	357	93.95	
87	Cattle Egret	Bubulcus ibis	242	63.68	
88	Great White Egret	Ardea alba	302	79.47	
89	Grey Heron	Ardea cinerea	363	95.53	
90	Sparrowhawk	Accipiter nisus	348	91.58	
91	Marsh Harrier	Circus aeruginosus	330	86.84	
92	Red Kite	Milvus milvus	343	90.26	
93	Buzzard	Buteo buteo	366	96.32	
94	Barn Owl	Tyto alba	296	77.89	
95	Little Owl	Athene noctua	219	57.63	
96	Short-eared Owl	Asio flammeus	236	62.11	
97	Tawny Owl	Strix aluco	291	76.58	
98	Kingfisher	Alcedo atthis	329	86.58	
99	Great Spotted Woodpecker	Dendrocopos major	355	93.42	
100	Green Woodpecker	Picus viridis	314	82.63	
101	Kestrel	Falco tinnunculus	356	93.68	
102	Hobby	Falco subbuteo	263	69.21	
103	Peregrine	Falco peregrinus	331	87.11	
104	Ring-necked Parakeet	Psittacula krameri	224	58.95	
105	Jay	Garrulus glandarius	356	93.68	
106	Magpie	Pica pica	369	97.11	
107	Chough	Pyrrhocorax pyrrhocorax	156	41.05	
108	Jackdaw	Coloeus monedula	366	96.32	
109	Rook	Corvus frugilegus	362	95.26	
110	Carrion Crow	Corvus corone	370	97.37	
111	Raven	Corvus corax	321	84.47	
112	Waxwing	Bombycilla garrulus	203	53.42	
113	Coal Tit	Periparus ater	357	93.95	
114	Marsh Tit	Poecile palustris	286	75.26	
115	Willow Tit	Poecile montanus	156	41.05	
116	Blue Tit	Cyanistes caeruleus	371	97.63	
117	Great Tit	Parus major	372	97.89	
118	Bearded Tit	Panurus biarmicus	242	63.68	
119	Woodlark	Lullula arborea	162	42.63	
120	Skylark	Alauda arvensis	347	91.32	
121	Sand Martin	Riparia riparia	332	87.37	
122	Swallow	Hirundo rustica	341	89.74	
123	House Martin	Delichon urbicum	334	87.89	
124	Cetti's Warbler	Cettia cetti	299	78.68	
125	Long-tailed Tit	Aegithalos caudatus	360	94.74	
126	Yellow-browed Warbler	Phylloscopus inornatus	174	45.79	
127	Willow Warbler	Phylloscopus trochilus	321	84.47	
128	Chiffchaff	Phylloscopus collybita	343	90.26	
129	Sedge Warbler	Acrocephalus schoenobaenus	318	83.68	
130	Reed Warbler	Acrocephalus scirpaceus	316	83.16	
131	Savi's Warbler	Locustella luscinioides	76	20.00	
132	Blackcap	Sylvia atricapilla	338	88.95	
133	Garden Warbler	Sylvia borin	269	70.79	
134	Lesser Whitethroat	Curruca curruca	260	68.42	
135	Whitethroat	Curruca communis	324	85.26	
136	Dartford Warbler	Curruca undata	168	44.21	
137	Firecrest	Regulus ignicapilla	197	51.84	
138	Goldcrest	Regulus regulus	340	89.47	
139	Wren	Troglodytes troglodytes	364	95.79	
140	Nuthatch	Sitta europaea	336	88.42	
141	Treecreeper	Certhia familiaris	335	88.16	
142	Starling	Sturnus vulgaris	369	97.11	
143	Song Thrush	Turdus philomelos	361	95.00	
144	Mistle Thrush	Turdus viscivorus	338	88.95	
145	Redwing	Turdus iliacus	344	90.53	
146	Blackbird	Turdus merula	372	97.89	
147	Fieldfare	Turdus pilaris	331	87.11	
148	Spotted Flycatcher	Muscicapa striata	246	64.74	
149	Robin	Erithacus rubecula	366	96.32	
150	Nightingale	Luscinia megarhynchos	127	33.42	
151	Whinchat	Saxicola rubetra	251	66.05	
152	Stonechat	Saxicola rubicola	344	90.53	
153	Wheatear	Oenanthe oenanthe	313	82.37	
154	Dipper	Cinclus cinclus	251	66.05	
155	House Sparrow	Passer domesticus	368	96.84	
156	Dunnock	Prunella modularis	366	96.32	
157	Yellow Wagtail	Motacilla flava	277	72.89	
158	Grey Wagtail	Motacilla cinerea	340	89.47	
159	Pied Wagtail	Motacilla alba	362	95.26	
160	Meadow Pipit	Anthus pratensis	343	90.26	
161	Tree Pipit	Anthus trivialis	233	61.32	
162	Water Pipit	Anthus spinoletta	206	54.21	
163	Rock Pipit	Anthus petrosus	299	78.68	
164	Chaffinch	Fringilla coelebs	367	96.58	
165	Brambling	Fringilla montifringilla	282	74.21	
166	Bullfinch	Pyrrhula pyrrhula	344	90.53	
167	Greenfinch	Chloris chloris	355	93.42	
168	Twite	Linaria flavirostris	200	52.63	
169	Linnet	Linaria cannabina	348	91.58	
170	Lesser Redpoll	Acanthis cabaret	261	68.68	
171	Goldfinch	Carduelis carduelis	364	95.79	
172	Siskin	Spinus spinus	328	86.32	
173	Yellowhammer	Emberiza citrinella	325	85.53	
174	Reed Bunting	Emberiza schoeniclus	352	92.63