Kevin Duncan: Buckinghamshire Life List BOU, All records: Top Blockers Record(s) 1 to 173 of 173 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	White-fronted Goose	Anser albifrons	9	47.37	
6	Mute Swan	Cygnus olor	16	84.21	
7	Egyptian Goose	Alopochen aegyptiaca	12	63.16	
8	Shelduck	Tadorna tadorna	13	68.42	
9	Mandarin Duck	Aix galericulata	12	63.16	
10	Garganey	Spatula querquedula	10	52.63	
11	Shoveler	Spatula clypeata	14	73.68	
12	Gadwall	Mareca strepera	14	73.68	
13	Wigeon	Mareca penelope	14	73.68	
14	Mallard	Anas platyrhynchos	17	89.47	
15	Pintail	Anas acuta	11	57.89	
16	Teal	Anas crecca	13	68.42	
17	Red-crested Pochard	Netta rufina	10	52.63	
18	Pochard	Aythya ferina	15	78.95	
19	Tufted Duck	Aythya fuligula	15	78.95	
20	Scaup	Aythya marila	11	57.89	
21	Common Scoter	Melanitta nigra	11	57.89	
22	Long-tailed Duck	Clangula hyemalis	9	47.37	
23	Goldeneye	Bucephala clangula	13	68.42	
24	Goosander	Mergus merganser	11	57.89	
25	Red-breasted Merganser	Mergus serrator	8	42.11	
26	Ruddy Duck	Oxyura jamaicensis	9	47.37	
27	Grey Partridge	Perdix perdix	10	52.63	
28	Pheasant	Phasianus colchicus	13	68.42	
29	Red-legged Partridge	Alectoris rufa	12	63.16	
30	Swift	Apus apus	14	73.68	
31	Cuckoo	Cuculus canorus	12	63.16	
32	Rock Dove (Feral Pigeon)	Columba livia	11	57.89	
33	Stock Dove	Columba oenas	13	68.42	
34	Woodpigeon	Columba palumbus	17	89.47	
35	Collared Dove	Streptopelia decaocto	15	78.95	
36	Water Rail	Rallus aquaticus	12	63.16	
37	Spotted Crake	Porzana porzana	9	47.37	
38	Moorhen	Gallinula chloropus	17	89.47	
39	Coot	Fulica atra	16	84.21	
40	Little Grebe	Tachybaptus ruficollis	15	78.95	
41	Great Crested Grebe	Podiceps cristatus	16	84.21	
42	Slavonian Grebe	Podiceps auritus	10	52.63	
43	Oystercatcher	Haematopus ostralegus	12	63.16	
44	Avocet	Recurvirostra avosetta	8	42.11	
45	Grey Plover	Pluvialis squatarola	8	42.11	
46	Golden Plover	Pluvialis apricaria	13	68.42	
47	Ringed Plover	Charadrius hiaticula	12	63.16	
48	Little Ringed Plover	Charadrius dubius	12	63.16	
49	Lapwing	Vanellus vanellus	16	84.21	
50	Eurasian Whimbrel	Numenius phaeopus	10	52.63	
51	Curlew	Numenius arquata	11	57.89	
52	Bar-tailed Godwit	Limosa lapponica	10	52.63	
53	Black-tailed Godwit	Limosa limosa	11	57.89	
54	Jack Snipe	Lymnocryptes minimus	10	52.63	
55	Snipe	Gallinago gallinago	13	68.42	
56	Common Sandpiper	Actitis hypoleucos	12	63.16	
57	Green Sandpiper	Tringa ochropus	11	57.89	
58	Wood Sandpiper	Tringa glareola	10	52.63	
59	Redshank	Tringa totanus	13	68.42	
60	Lesser Yellowlegs	Tringa flavipes	5	26.32	
61	Greenshank	Tringa nebularia	11	57.89	
62	Turnstone	Arenaria interpres	9	47.37	
63	Knot	Calidris canutus	11	57.89	
64	Ruff	Calidris pugnax	10	52.63	
65	Curlew Sandpiper	Calidris ferruginea	7	36.84	
66	Temminck's Stint	Calidris temminckii	9	47.37	
67	Sanderling	Calidris alba	9	47.37	
68	Dunlin	Calidris alpina	12	63.16	
69	Little Stint	Calidris minuta	9	47.37	
70	Little Tern	Sternula albifrons	9	47.37	
71	Black Tern	Chlidonias niger	10	52.63	
72	Common Tern	Sterna hirundo	13	68.42	
73	Roseate Tern	Sterna dougallii	1	5.26	
74	Sandwich Tern	Thalasseus sandvicensis	9	47.37	
75	Little Gull	Hydrocoloeus minutus	10	52.63	
76	Kittiwake	Rissa tridactyla	9	47.37	
77	Sabine's Gull	Xema sabini	6	31.58	
78	Black-headed Gull	Chroicocephalus ridibundus	17	89.47	
79	Mediterranean Gull	Ichthyaetus melanocephalus	10	52.63	
80	Common Gull	Larus canus	14	73.68	
81	Herring Gull	Larus argentatus	15	78.95	
82	Yellow-legged Gull	Larus michahellis	9	47.37	
83	Great Black-backed Gull	Larus marinus	12	63.16	
84	Glaucous Gull	Larus hyperboreus	9	47.37	
85	Lesser Black-backed Gull	Larus fuscus	16	84.21	
86	Iceland Gull	Larus glaucoides	8	42.11	
87	Cormorant	Phalacrocorax carbo	15	78.95	
88	Glossy Ibis	Plegadis falcinellus	7	36.84	
89	Bittern	Botaurus stellaris	12	63.16	
90	Little Egret	Egretta garzetta	13	68.42	
91	Cattle Egret	Bubulcus ibis	9	47.37	
92	Great White Egret	Ardea alba	11	57.89	
93	Grey Heron	Ardea cinerea	16	84.21	
94	Sparrowhawk	Accipiter nisus	12	63.16	
95	Red Kite	Milvus milvus	15	78.95	
96	Buzzard	Buteo buteo	14	73.68	
97	Barn Owl	Tyto alba	12	63.16	
98	Little Owl	Athene noctua	11	57.89	
99	Short-eared Owl	Asio flammeus	11	57.89	
100	Tawny Owl	Strix aluco	10	52.63	
101	Kingfisher	Alcedo atthis	13	68.42	
102	Lesser Spotted Woodpecker	Dryobates minor	8	42.11	
103	Great Spotted Woodpecker	Dendrocopos major	12	63.16	
104	Green Woodpecker	Picus viridis	13	68.42	
105	Kestrel	Falco tinnunculus	16	84.21	
106	Red-footed Falcon	Falco vespertinus	5	26.32	
107	Hobby	Falco subbuteo	12	63.16	
108	Peregrine	Falco peregrinus	11	57.89	
109	Ring-necked Parakeet	Psittacula krameri	12	63.16	
110	Red-backed Shrike	Lanius collurio	7	36.84	
111	Jay	Garrulus glandarius	14	73.68	
112	Magpie	Pica pica	16	84.21	
113	Jackdaw	Coloeus monedula	15	78.95	
114	Rook	Corvus frugilegus	15	78.95	
115	Carrion Crow	Corvus corone	17	89.47	
116	Raven	Corvus corax	13	68.42	
117	Waxwing	Bombycilla garrulus	11	57.89	
118	Coal Tit	Periparus ater	13	68.42	
119	Marsh Tit	Poecile palustris	12	63.16	
120	Blue Tit	Cyanistes caeruleus	17	89.47	
121	Great Tit	Parus major	14	73.68	
122	Skylark	Alauda arvensis	14	73.68	
123	Sand Martin	Riparia riparia	14	73.68	
124	Swallow	Hirundo rustica	16	84.21	
125	House Martin	Delichon urbicum	15	78.95	
126	Cetti's Warbler	Cettia cetti	10	52.63	
127	Long-tailed Tit	Aegithalos caudatus	15	78.95	
128	Willow Warbler	Phylloscopus trochilus	13	68.42	
129	Chiffchaff	Phylloscopus collybita	14	73.68	
130	Sedge Warbler	Acrocephalus schoenobaenus	13	68.42	
131	Reed Warbler	Acrocephalus scirpaceus	12	63.16	
132	Blackcap	Sylvia atricapilla	12	63.16	
133	Garden Warbler	Sylvia borin	11	57.89	
134	Lesser Whitethroat	Curruca curruca	10	52.63	
135	Whitethroat	Curruca communis	14	73.68	
136	Goldcrest	Regulus regulus	13	68.42	
137	Wren	Troglodytes troglodytes	13	68.42	
138	Nuthatch	Sitta europaea	13	68.42	
139	Treecreeper	Certhia familiaris	12	63.16	
140	Starling	Sturnus vulgaris	16	84.21	
141	Song Thrush	Turdus philomelos	14	73.68	
142	Mistle Thrush	Turdus viscivorus	14	73.68	
143	Redwing	Turdus iliacus	14	73.68	
144	Blackbird	Turdus merula	17	89.47	
145	Fieldfare	Turdus pilaris	14	73.68	
146	Ring Ouzel	Turdus torquatus	11	57.89	
147	Spotted Flycatcher	Muscicapa striata	11	57.89	
148	Robin	Erithacus rubecula	16	84.21	
149	Nightingale	Luscinia megarhynchos	8	42.11	
150	Black Redstart	Phoenicurus ochruros	10	52.63	
151	Redstart	Phoenicurus phoenicurus	10	52.63	
152	Whinchat	Saxicola rubetra	11	57.89	
153	Stonechat	Saxicola rubicola	13	68.42	
154	Wheatear	Oenanthe oenanthe	10	52.63	
155	House Sparrow	Passer domesticus	16	84.21	
156	Dunnock	Prunella modularis	15	78.95	
157	Yellow Wagtail	Motacilla flava	10	52.63	
158	Grey Wagtail	Motacilla cinerea	12	63.16	
159	Pied Wagtail	Motacilla alba	14	73.68	
160	Meadow Pipit	Anthus pratensis	11	57.89	
161	Chaffinch	Fringilla coelebs	14	73.68	
162	Brambling	Fringilla montifringilla	10	52.63	
163	Bullfinch	Pyrrhula pyrrhula	14	73.68	
164	Greenfinch	Chloris chloris	14	73.68	
165	Linnet	Linaria cannabina	12	63.16	
166	Lesser Redpoll	Acanthis cabaret	11	57.89	
167	Goldfinch	Carduelis carduelis	15	78.95	
168	Siskin	Spinus spinus	11	57.89	
169	Lapland Bunting	Calcarius lapponicus	5	26.32	
170	Snow Bunting	Plectrophenax nivalis	7	36.84	
171	Corn Bunting	Emberiza calandra	10	52.63	
172	Yellowhammer	Emberiza citrinella	11	57.89	
173	Reed Bunting	Emberiza schoeniclus	13	68.42