Jonathan Nasir: Britain Year List 2019 BOU, All records: Top Blockers Record(s) 1 to 233 of 233 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	Bewick's Swan	Cygnus columbianus	186	48.95	
8	Whooper Swan	Cygnus cygnus	284	74.74	
9	Egyptian Goose	Alopochen aegyptiaca	286	75.26	
10	Shelduck	Tadorna tadorna	358	94.21	
11	Mandarin Duck	Aix galericulata	263	69.21	
12	Garganey	Spatula querquedula	255	67.11	
13	Blue-winged Teal	Spatula discors	73	19.21	
14	Shoveler	Spatula clypeata	358	94.21	
15	Gadwall	Mareca strepera	354	93.16	
16	Wigeon	Mareca penelope	361	95.00	
17	American Wigeon	Mareca americana	64	16.84	
18	Mallard	Anas platyrhynchos	371	97.63	
19	Pintail	Anas acuta	322	84.74	
20	Teal	Anas crecca	363	95.53	
21	Red-crested Pochard	Netta rufina	195	51.32	
22	Pochard	Aythya ferina	339	89.21	
23	Ring-necked Duck	Aythya collaris	160	42.11	
24	Tufted Duck	Aythya fuligula	362	95.26	
25	Scaup	Aythya marila	225	59.21	
26	Eider	Somateria mollissima	275	72.37	
27	Common Scoter	Melanitta nigra	277	72.89	
28	Long-tailed Duck	Clangula hyemalis	245	64.47	
29	Goldeneye	Bucephala clangula	326	85.79	
30	Smew	Mergellus albellus	188	49.47	
31	Goosander	Mergus merganser	327	86.05	
32	Red-breasted Merganser	Mergus serrator	277	72.89	
33	Grey Partridge	Perdix perdix	245	64.47	
34	Pheasant	Phasianus colchicus	361	95.00	
35	Red-legged Partridge	Alectoris rufa	324	85.26	
36	Swift	Apus apus	330	86.84	
37	Little Bustard	Tetrax tetrax	107	28.16	
38	Yellow-billed Cuckoo	Coccyzus americanus	26	6.84	
39	Cuckoo	Cuculus canorus	290	76.32	
40	Rock Dove (Feral Pigeon)	Columba livia	301	79.21	
41	Stock Dove	Columba oenas	337	88.68	
42	Woodpigeon	Columba palumbus	372	97.89	
43	Turtle Dove	Streptopelia turtur	185	48.68	
44	Collared Dove	Streptopelia decaocto	360	94.74	
45	Water Rail	Rallus aquaticus	297	78.16	
46	Spotted Crake	Porzana porzana	69	18.16	
47	Moorhen	Gallinula chloropus	366	96.32	
48	Coot	Fulica atra	363	95.53	
49	Little Grebe	Tachybaptus ruficollis	352	92.63	
50	Great Crested Grebe	Podiceps cristatus	358	94.21	
51	Black-necked Grebe	Podiceps nigricollis	234	61.58	
52	Stone-curlew	Burhinus oedicnemus	129	33.95	
53	Oystercatcher	Haematopus ostralegus	354	93.16	
54	Avocet	Recurvirostra avosetta	320	84.21	
55	Grey Plover	Pluvialis squatarola	289	76.05	
56	Golden Plover	Pluvialis apricaria	314	82.63	
57	Dotterel	Eudromias morinellus	115	30.26	
58	Ringed Plover	Charadrius hiaticula	331	87.11	
59	Little Ringed Plover	Charadrius dubius	284	74.74	
60	Lapwing	Vanellus vanellus	360	94.74	
61	Eurasian Whimbrel	Numenius phaeopus	261	68.68	
62	Curlew	Numenius arquata	357	93.95	
63	Bar-tailed Godwit	Limosa lapponica	286	75.26	
64	Black-tailed Godwit	Limosa limosa	341	89.74	
65	Long-billed Dowitcher	Limnodromus scolopaceus	138	36.32	
66	Jack Snipe	Lymnocryptes minimus	191	50.26	
67	Snipe	Gallinago gallinago	332	87.37	
68	Common Sandpiper	Actitis hypoleucos	301	79.21	
69	Green Sandpiper	Tringa ochropus	282	74.21	
70	Wood Sandpiper	Tringa glareola	220	57.89	
71	Redshank	Tringa totanus	353	92.89	
72	Lesser Yellowlegs	Tringa flavipes	95	25.00	
73	Spotted Redshank	Tringa erythropus	241	63.42	
74	Greenshank	Tringa nebularia	295	77.63	
75	Turnstone	Arenaria interpres	332	87.37	
76	Knot	Calidris canutus	290	76.32	
77	Ruff	Calidris pugnax	302	79.47	
78	Curlew Sandpiper	Calidris ferruginea	193	50.79	
79	Buff-breasted Sandpiper	Calidris subruficollis	74	19.47	
80	Sanderling	Calidris alba	289	76.05	
81	Dunlin	Calidris alpina	344	90.53	
82	Little Stint	Calidris minuta	153	40.26	
83	White-rumped Sandpiper	Calidris fuscicollis	90	23.68	
84	Pectoral Sandpiper	Calidris melanotos	70	18.42	
85	Semipalmated Sandpiper	Calidris pusilla	47	12.37	
86	Little Tern	Sternula albifrons	220	57.89	
87	Black Tern	Chlidonias niger	190	50.00	
88	Arctic Tern	Sterna paradisaea	233	61.32	
89	Common Tern	Sterna hirundo	311	81.84	
90	Sandwich Tern	Thalasseus sandvicensis	288	75.79	
91	Little Gull	Hydrocoloeus minutus	221	58.16	
92	Kittiwake	Rissa tridactyla	297	78.16	
93	Black-headed Gull	Chroicocephalus ridibundus	370	97.37	
94	Mediterranean Gull	Ichthyaetus melanocephalus	297	78.16	
95	Common Gull	Larus canus	341	89.74	
96	Caspian Gull	Larus cachinnans	134	35.26	
97	Herring Gull	Larus argentatus	365	96.05	
98	Yellow-legged Gull	Larus michahellis	175	46.05	
99	Great Black-backed Gull	Larus marinus	351	92.37	
100	Lesser Black-backed Gull	Larus fuscus	355	93.42	
101	Iceland Gull	Larus glaucoides	105	27.63	
102	Puffin	Fratercula arctica	219	57.63	
103	Black Guillemot	Cepphus grylle	167	43.95	
104	Razorbill	Alca torda	276	72.63	
105	Common Guillemot	Uria aalge	300	78.95	
106	Red-throated Diver	Gavia stellata	275	72.37	
107	Black-throated Diver	Gavia arctica	172	45.26	
108	Great Northern Diver	Gavia immer	228	60.00	
109	Fulmar	Fulmarus glacialis	295	77.63	
110	Manx Shearwater	Puffinus puffinus	198	52.11	
111	Gannet	Morus bassanus	316	83.16	
112	Cormorant	Phalacrocorax carbo	366	96.32	
113	Shag	Gulosus aristotelis	286	75.26	
114	Spoonbill	Platalea leucorodia	260	68.42	
115	Bittern	Botaurus stellaris	212	55.79	
116	Little Egret	Egretta garzetta	357	93.95	
117	Cattle Egret	Bubulcus ibis	242	63.68	
118	Great White Egret	Ardea alba	302	79.47	
119	Grey Heron	Ardea cinerea	363	95.53	
120	Osprey	Pandion haliaetus	239	62.89	
121	Honey-buzzard	Pernis apivorus	88	23.16	
122	Sparrowhawk	Accipiter nisus	348	91.58	
123	Goshawk	Accipiter gentilis	183	48.16	
124	Marsh Harrier	Circus aeruginosus	330	86.84	
125	Hen Harrier	Circus cyaneus	219	57.63	
126	Red Kite	Milvus milvus	343	90.26	
127	Buzzard	Buteo buteo	366	96.32	
128	Barn Owl	Tyto alba	296	77.89	
129	Little Owl	Athene noctua	219	57.63	
130	Short-eared Owl	Asio flammeus	236	62.11	
131	Tawny Owl	Strix aluco	291	76.58	
132	Kingfisher	Alcedo atthis	329	86.58	
133	Wryneck	Jynx torquilla	77	20.26	
134	Great Spotted Woodpecker	Dendrocopos major	355	93.42	
135	Green Woodpecker	Picus viridis	314	82.63	
136	Kestrel	Falco tinnunculus	356	93.68	
137	Merlin	Falco columbarius	236	62.11	
138	Hobby	Falco subbuteo	263	69.21	
139	Peregrine	Falco peregrinus	331	87.11	
140	Ring-necked Parakeet	Psittacula krameri	224	58.95	
141	Red-eyed Vireo	Vireo olivaceus	84	22.11	
142	Great Grey Shrike	Lanius excubitor	136	35.79	
143	Red-backed Shrike	Lanius collurio	73	19.21	
144	Jay	Garrulus glandarius	356	93.68	
145	Magpie	Pica pica	369	97.11	
146	Chough	Pyrrhocorax pyrrhocorax	156	41.05	
147	Jackdaw	Coloeus monedula	366	96.32	
148	Rook	Corvus frugilegus	362	95.26	
149	Carrion Crow	Corvus corone	370	97.37	
150	Hooded Crow	Corvus cornix	185	48.68	
151	Raven	Corvus corax	321	84.47	
152	Coal Tit	Periparus ater	357	93.95	
153	Marsh Tit	Poecile palustris	286	75.26	
154	Blue Tit	Cyanistes caeruleus	371	97.63	
155	Great Tit	Parus major	372	97.89	
156	Bearded Tit	Panurus biarmicus	242	63.68	
157	Woodlark	Lullula arborea	162	42.63	
158	Skylark	Alauda arvensis	347	91.32	
159	Short-toed Lark	Calandrella brachydactyla	29	7.63	
160	Sand Martin	Riparia riparia	332	87.37	
161	Swallow	Hirundo rustica	341	89.74	
162	House Martin	Delichon urbicum	334	87.89	
163	Cetti's Warbler	Cettia cetti	299	78.68	
164	Long-tailed Tit	Aegithalos caudatus	360	94.74	
165	Wood Warbler	Phylloscopus sibilatrix	139	36.58	
166	Yellow-browed Warbler	Phylloscopus inornatus	174	45.79	
167	Willow Warbler	Phylloscopus trochilus	321	84.47	
168	Chiffchaff	Phylloscopus collybita	343	90.26	
169	Arctic Warbler	Phylloscopus borealis	5	1.32	
170	Sedge Warbler	Acrocephalus schoenobaenus	318	83.68	
171	Reed Warbler	Acrocephalus scirpaceus	316	83.16	
172	Eastern Olivaceous Warbler	Iduna pallida	41	10.79	
173	Melodious Warbler	Hippolais polyglotta	16	4.21	
174	Savi's Warbler	Locustella luscinioides	76	20.00	
175	Blackcap	Sylvia atricapilla	338	88.95	
176	Garden Warbler	Sylvia borin	269	70.79	
177	Lesser Whitethroat	Curruca curruca	260	68.42	
178	Western Subalpine Warbler	Curruca iberiae	25	6.58	
179	Whitethroat	Curruca communis	324	85.26	
180	Dartford Warbler	Curruca undata	168	44.21	
181	Firecrest	Regulus ignicapilla	197	51.84	
182	Goldcrest	Regulus regulus	340	89.47	
183	Wren	Troglodytes troglodytes	364	95.79	
184	Nuthatch	Sitta europaea	336	88.42	
185	Treecreeper	Certhia familiaris	335	88.16	
186	Starling	Sturnus vulgaris	369	97.11	
187	Song Thrush	Turdus philomelos	361	95.00	
188	Mistle Thrush	Turdus viscivorus	338	88.95	
189	Redwing	Turdus iliacus	344	90.53	
190	Blackbird	Turdus merula	372	97.89	
191	Fieldfare	Turdus pilaris	331	87.11	
192	Black-throated Thrush	Turdus atrogularis	51	13.42	
193	Spotted Flycatcher	Muscicapa striata	246	64.74	
194	Robin	Erithacus rubecula	366	96.32	
195	Nightingale	Luscinia megarhynchos	127	33.42	
196	Red-breasted Flycatcher	Ficedula parva	66	17.37	
197	Pied Flycatcher	Ficedula hypoleuca	225	59.21	
198	Black Redstart	Phoenicurus ochruros	185	48.68	
199	Redstart	Phoenicurus phoenicurus	258	67.89	
200	Blue Rock Thrush	Monticola solitarius	33	8.68	
201	Whinchat	Saxicola rubetra	251	66.05	
202	Stonechat	Saxicola rubicola	344	90.53	
203	Wheatear	Oenanthe oenanthe	313	82.37	
204	Dipper	Cinclus cinclus	251	66.05	
205	Tree Sparrow	Passer montanus	281	73.95	
206	House Sparrow	Passer domesticus	368	96.84	
207	Dunnock	Prunella modularis	366	96.32	
208	Yellow Wagtail	Motacilla flava	277	72.89	
209	Eastern Yellow Wagtail	Motacilla tschutschensis	83	21.84	
210	Grey Wagtail	Motacilla cinerea	340	89.47	
211	Pied Wagtail	Motacilla alba	362	95.26	
212	Meadow Pipit	Anthus pratensis	343	90.26	
213	Tree Pipit	Anthus trivialis	233	61.32	
214	Red-throated Pipit	Anthus cervinus	15	3.95	
215	Water Pipit	Anthus spinoletta	206	54.21	
216	Rock Pipit	Anthus petrosus	299	78.68	
217	Chaffinch	Fringilla coelebs	367	96.58	
218	Brambling	Fringilla montifringilla	282	74.21	
219	Bullfinch	Pyrrhula pyrrhula	344	90.53	
220	Greenfinch	Chloris chloris	355	93.42	
221	Linnet	Linaria cannabina	348	91.58	
222	Lesser Redpoll	Acanthis cabaret	261	68.68	
223	Common Crossbill	Loxia curvirostra	240	63.16	
224	Goldfinch	Carduelis carduelis	364	95.79	
225	Siskin	Spinus spinus	328	86.32	
226	Lapland Bunting	Calcarius lapponicus	76	20.00	
227	Snow Bunting	Plectrophenax nivalis	215	56.58	
228	Corn Bunting	Emberiza calandra	233	61.32	
229	Yellowhammer	Emberiza citrinella	325	85.53	
230	Cirl Bunting	Emberiza cirlus	82	21.58	
231	Black-headed Bunting	Emberiza melanocephala	46	12.11	
232	Reed Bunting	Emberiza schoeniclus	352	92.63	
233	Rose-breasted Grosbeak	Pheucticus ludovicianus	17	4.47