Robert Norris: Buckinghamshire Life List 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	11	57.89	
2	Canada Goose	Branta canadensis	16	84.21	
3	Barnacle Goose	Branta leucopsis	9	47.37	
4	Greylag Goose	Anser anser	16	84.21	
5	Pink-footed Goose	Anser brachyrhynchus	9	47.37	
6	Tundra Bean Goose	Anser serrirostris	4	21.05	
7	White-fronted Goose	Anser albifrons	9	47.37	
8	Mute Swan	Cygnus olor	16	84.21	
9	Bewick's Swan	Cygnus columbianus	7	36.84	
10	Whooper Swan	Cygnus cygnus	7	36.84	
11	Egyptian Goose	Alopochen aegyptiaca	12	63.16	
12	Shelduck	Tadorna tadorna	13	68.42	
13	Mandarin Duck	Aix galericulata	12	63.16	
14	Garganey	Spatula querquedula	10	52.63	
15	Shoveler	Spatula clypeata	14	73.68	
16	Gadwall	Mareca strepera	14	73.68	
17	Wigeon	Mareca penelope	14	73.68	
18	Mallard	Anas platyrhynchos	17	89.47	
19	Pintail	Anas acuta	11	57.89	
20	Teal	Anas crecca	13	68.42	
21	Green-winged Teal	Anas carolinensis	3	15.79	
22	Red-crested Pochard	Netta rufina	10	52.63	
23	Pochard	Aythya ferina	15	78.95	
24	Ferruginous Duck	Aythya nyroca	7	36.84	
25	Ring-necked Duck	Aythya collaris	8	42.11	
26	Tufted Duck	Aythya fuligula	15	78.95	
27	Scaup	Aythya marila	11	57.89	
28	Velvet Scoter	Melanitta fusca	6	31.58	
29	Common Scoter	Melanitta nigra	11	57.89	
30	Long-tailed Duck	Clangula hyemalis	9	47.37	
31	Goldeneye	Bucephala clangula	13	68.42	
32	Smew	Mergellus albellus	10	52.63	
33	Goosander	Mergus merganser	11	57.89	
34	Red-breasted Merganser	Mergus serrator	8	42.11	
35	Ruddy Duck	Oxyura jamaicensis	9	47.37	
36	Grey Partridge	Perdix perdix	10	52.63	
37	Pheasant	Phasianus colchicus	13	68.42	
38	Quail	Coturnix coturnix	7	36.84	
39	Red-legged Partridge	Alectoris rufa	12	63.16	
40	Nightjar	Caprimulgus europaeus	5	26.32	
41	Swift	Apus apus	14	73.68	
42	Cuckoo	Cuculus canorus	12	63.16	
43	Rock Dove (Feral Pigeon)	Columba livia	11	57.89	
44	Stock Dove	Columba oenas	13	68.42	
45	Woodpigeon	Columba palumbus	17	89.47	
46	Turtle Dove	Streptopelia turtur	10	52.63	
47	Collared Dove	Streptopelia decaocto	15	78.95	
48	Water Rail	Rallus aquaticus	12	63.16	
49	Spotted Crake	Porzana porzana	9	47.37	
50	Moorhen	Gallinula chloropus	17	89.47	
51	Coot	Fulica atra	16	84.21	
52	Little Crake	Zapornia parva	4	21.05	
53	Crane	Grus grus	6	31.58	
54	Little Grebe	Tachybaptus ruficollis	15	78.95	
55	Red-necked Grebe	Podiceps grisegena	8	42.11	
56	Great Crested Grebe	Podiceps cristatus	16	84.21	
57	Slavonian Grebe	Podiceps auritus	10	52.63	
58	Black-necked Grebe	Podiceps nigricollis	9	47.37	
59	Stone-curlew	Burhinus oedicnemus	5	26.32	
60	Oystercatcher	Haematopus ostralegus	12	63.16	
61	Black-winged Stilt	Himantopus himantopus	7	36.84	
62	Avocet	Recurvirostra avosetta	8	42.11	
63	Grey Plover	Pluvialis squatarola	8	42.11	
64	Golden Plover	Pluvialis apricaria	13	68.42	
65	Ringed Plover	Charadrius hiaticula	12	63.16	
66	Little Ringed Plover	Charadrius dubius	12	63.16	
67	Lapwing	Vanellus vanellus	16	84.21	
68	Eurasian Whimbrel	Numenius phaeopus	10	52.63	
69	Curlew	Numenius arquata	11	57.89	
70	Bar-tailed Godwit	Limosa lapponica	10	52.63	
71	Black-tailed Godwit	Limosa limosa	11	57.89	
72	Jack Snipe	Lymnocryptes minimus	10	52.63	
73	Woodcock	Scolopax rusticola	9	47.37	
74	Snipe	Gallinago gallinago	13	68.42	
75	Wilson's Phalarope	Phalaropus tricolor	6	31.58	
76	Grey Phalarope	Phalaropus fulicarius	7	36.84	
77	Red-necked Phalarope	Phalaropus lobatus	7	36.84	
78	Common Sandpiper	Actitis hypoleucos	12	63.16	
79	Green Sandpiper	Tringa ochropus	11	57.89	
80	Wood Sandpiper	Tringa glareola	10	52.63	
81	Redshank	Tringa totanus	13	68.42	
82	Spotted Redshank	Tringa erythropus	8	42.11	
83	Greenshank	Tringa nebularia	11	57.89	
84	Turnstone	Arenaria interpres	9	47.37	
85	Knot	Calidris canutus	11	57.89	
86	Ruff	Calidris pugnax	10	52.63	
87	Temminck's Stint	Calidris temminckii	9	47.37	
88	Sanderling	Calidris alba	9	47.37	
89	Dunlin	Calidris alpina	12	63.16	
90	Little Stint	Calidris minuta	9	47.37	
91	White-rumped Sandpiper	Calidris fuscicollis	4	21.05	
92	Pectoral Sandpiper	Calidris melanotos	5	26.32	
93	Little Tern	Sternula albifrons	9	47.37	
94	Black Tern	Chlidonias niger	10	52.63	
95	White-winged Black Tern	Chlidonias leucopterus	4	21.05	
96	Arctic Tern	Sterna paradisaea	10	52.63	
97	Common Tern	Sterna hirundo	13	68.42	
98	Sandwich Tern	Thalasseus sandvicensis	9	47.37	
99	Little Gull	Hydrocoloeus minutus	10	52.63	
100	Kittiwake	Rissa tridactyla	9	47.37	
101	Sabine's Gull	Xema sabini	6	31.58	
102	Black-headed Gull	Chroicocephalus ridibundus	17	89.47	
103	Mediterranean Gull	Ichthyaetus melanocephalus	10	52.63	
104	Common Gull	Larus canus	14	73.68	
105	Caspian Gull	Larus cachinnans	7	36.84	
106	Herring Gull	Larus argentatus	15	78.95	
107	Yellow-legged Gull	Larus michahellis	9	47.37	
108	Great Black-backed Gull	Larus marinus	12	63.16	
109	Glaucous Gull	Larus hyperboreus	9	47.37	
110	Lesser Black-backed Gull	Larus fuscus	16	84.21	
111	Iceland Gull	Larus glaucoides	8	42.11	
112	Great Skua	Stercorarius skua	2	10.53	
113	Little Auk	Alle alle	4	21.05	
114	Black-throated Diver	Gavia arctica	6	31.58	
115	Great Northern Diver	Gavia immer	8	42.11	
116	White Stork	Ciconia ciconia	5	26.32	
117	Cormorant	Phalacrocorax carbo	15	78.95	
118	Shag	Gulosus aristotelis	8	42.11	
119	Glossy Ibis	Plegadis falcinellus	7	36.84	
120	Spoonbill	Platalea leucorodia	6	31.58	
121	Bittern	Botaurus stellaris	12	63.16	
122	Night-heron	Nycticorax nycticorax	3	15.79	
123	Little Egret	Egretta garzetta	13	68.42	
124	Cattle Egret	Bubulcus ibis	9	47.37	
125	Great White Egret	Ardea alba	11	57.89	
126	Grey Heron	Ardea cinerea	16	84.21	
127	Purple Heron	Ardea purpurea	5	26.32	
128	Osprey	Pandion haliaetus	10	52.63	
129	Honey-buzzard	Pernis apivorus	4	21.05	
130	Sparrowhawk	Accipiter nisus	12	63.16	
131	Goshawk	Accipiter gentilis	7	36.84	
132	Marsh Harrier	Circus aeruginosus	8	42.11	
133	Hen Harrier	Circus cyaneus	8	42.11	
134	Red Kite	Milvus milvus	15	78.95	
135	Buzzard	Buteo buteo	14	73.68	
136	Barn Owl	Tyto alba	12	63.16	
137	Little Owl	Athene noctua	11	57.89	
138	Long-eared Owl	Asio otus	9	47.37	
139	Short-eared Owl	Asio flammeus	11	57.89	
140	Tawny Owl	Strix aluco	10	52.63	
141	Hoopoe	Upupa epops	6	31.58	
142	Kingfisher	Alcedo atthis	13	68.42	
143	Wryneck	Jynx torquilla	6	31.58	
144	Lesser Spotted Woodpecker	Dryobates minor	8	42.11	
145	Great Spotted Woodpecker	Dendrocopos major	12	63.16	
146	Green Woodpecker	Picus viridis	13	68.42	
147	Kestrel	Falco tinnunculus	16	84.21	
148	Merlin	Falco columbarius	9	47.37	
149	Hobby	Falco subbuteo	12	63.16	
150	Peregrine	Falco peregrinus	11	57.89	
151	Ring-necked Parakeet	Psittacula krameri	12	63.16	
152	Great Grey Shrike	Lanius excubitor	6	31.58	
153	Red-backed Shrike	Lanius collurio	7	36.84	
154	Jay	Garrulus glandarius	14	73.68	
155	Magpie	Pica pica	16	84.21	
156	Jackdaw	Coloeus monedula	15	78.95	
157	Rook	Corvus frugilegus	15	78.95	
158	Carrion Crow	Corvus corone	17	89.47	
159	Raven	Corvus corax	13	68.42	
160	Waxwing	Bombycilla garrulus	11	57.89	
161	Coal Tit	Periparus ater	13	68.42	
162	Marsh Tit	Poecile palustris	12	63.16	
163	Willow Tit	Poecile montanus	8	42.11	
164	Blue Tit	Cyanistes caeruleus	17	89.47	
165	Great Tit	Parus major	14	73.68	
166	Bearded Tit	Panurus biarmicus	7	36.84	
167	Woodlark	Lullula arborea	7	36.84	
168	Skylark	Alauda arvensis	14	73.68	
169	Sand Martin	Riparia riparia	14	73.68	
170	Swallow	Hirundo rustica	16	84.21	
171	House Martin	Delichon urbicum	15	78.95	
172	Cetti's Warbler	Cettia cetti	10	52.63	
173	Long-tailed Tit	Aegithalos caudatus	15	78.95	
174	Wood Warbler	Phylloscopus sibilatrix	8	42.11	
175	Yellow-browed Warbler	Phylloscopus inornatus	6	31.58	
176	Willow Warbler	Phylloscopus trochilus	13	68.42	
177	Chiffchaff	Phylloscopus collybita	14	73.68	
178	Sedge Warbler	Acrocephalus schoenobaenus	13	68.42	
179	Reed Warbler	Acrocephalus scirpaceus	12	63.16	
180	Marsh Warbler	Acrocephalus palustris	3	15.79	
181	Icterine Warbler	Hippolais icterina	3	15.79	
182	Grasshopper Warbler	Locustella naevia	9	47.37	
183	Blackcap	Sylvia atricapilla	12	63.16	
184	Garden Warbler	Sylvia borin	11	57.89	
185	Lesser Whitethroat	Curruca curruca	10	52.63	
186	Whitethroat	Curruca communis	14	73.68	
187	Dartford Warbler	Curruca undata	7	36.84	
188	Firecrest	Regulus ignicapilla	9	47.37	
189	Goldcrest	Regulus regulus	13	68.42	
190	Wren	Troglodytes troglodytes	13	68.42	
191	Nuthatch	Sitta europaea	13	68.42	
192	Treecreeper	Certhia familiaris	12	63.16	
193	Starling	Sturnus vulgaris	16	84.21	
194	Song Thrush	Turdus philomelos	14	73.68	
195	Mistle Thrush	Turdus viscivorus	14	73.68	
196	Redwing	Turdus iliacus	14	73.68	
197	Blackbird	Turdus merula	17	89.47	
198	Fieldfare	Turdus pilaris	14	73.68	
199	Ring Ouzel	Turdus torquatus	11	57.89	
200	Spotted Flycatcher	Muscicapa striata	11	57.89	
201	Robin	Erithacus rubecula	16	84.21	
202	Nightingale	Luscinia megarhynchos	8	42.11	
203	Pied Flycatcher	Ficedula hypoleuca	7	36.84	
204	Black Redstart	Phoenicurus ochruros	10	52.63	
205	Redstart	Phoenicurus phoenicurus	10	52.63	
206	Whinchat	Saxicola rubetra	11	57.89	
207	Stonechat	Saxicola rubicola	13	68.42	
208	Wheatear	Oenanthe oenanthe	10	52.63	
209	Dipper	Cinclus cinclus	9	47.37	
210	Tree Sparrow	Passer montanus	8	42.11	
211	House Sparrow	Passer domesticus	16	84.21	
212	Dunnock	Prunella modularis	15	78.95	
213	Yellow Wagtail	Motacilla flava	10	52.63	
214	Grey Wagtail	Motacilla cinerea	12	63.16	
215	Pied Wagtail	Motacilla alba	14	73.68	
216	Meadow Pipit	Anthus pratensis	11	57.89	
217	Tree Pipit	Anthus trivialis	9	47.37	
218	Water Pipit	Anthus spinoletta	6	31.58	
219	Rock Pipit	Anthus petrosus	8	42.11	
220	Chaffinch	Fringilla coelebs	14	73.68	
221	Brambling	Fringilla montifringilla	10	52.63	
222	Hawfinch	Coccothraustes coccothraustes	7	36.84	
223	Bullfinch	Pyrrhula pyrrhula	14	73.68	
224	Greenfinch	Chloris chloris	14	73.68	
225	Linnet	Linaria cannabina	12	63.16	
226	Common Redpoll	Acanthis flammea	6	31.58	
227	Lesser Redpoll	Acanthis cabaret	11	57.89	
228	Common Crossbill	Loxia curvirostra	8	42.11	
229	Goldfinch	Carduelis carduelis	15	78.95	
230	Siskin	Spinus spinus	11	57.89	
231	Corn Bunting	Emberiza calandra	10	52.63	
232	Yellowhammer	Emberiza citrinella	11	57.89	
233	Reed Bunting	Emberiza schoeniclus	13	68.42