Ian Foster: England Life List BOU, Lockdown (COVID-19): Top Blockers Record(s) 1 to 86 of 86 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Canada Goose	Branta canadensis	62	86.11	
2	Greylag Goose	Anser anser	61	84.72	
3	Pink-footed Goose	Anser brachyrhynchus	15	20.83	
4	Mute Swan	Cygnus olor	52	72.22	
5	Shelduck	Tadorna tadorna	34	47.22	
6	Shoveler	Spatula clypeata	34	47.22	
7	Gadwall	Mareca strepera	33	45.83	
8	Mallard	Anas platyrhynchos	69	95.83	
9	Teal	Anas crecca	39	54.17	
10	Pochard	Aythya ferina	16	22.22	
11	Tufted Duck	Aythya fuligula	35	48.61	
12	Pheasant	Phasianus colchicus	58	80.56	
13	Swift	Apus apus	58	80.56	
14	Rock Dove (Feral Pigeon)	Columba livia	51	70.83	
15	Stock Dove	Columba oenas	62	86.11	
16	Woodpigeon	Columba palumbus	72	100.00	
17	Collared Dove	Streptopelia decaocto	70	97.22	
18	Water Rail	Rallus aquaticus	19	26.39	
19	Moorhen	Gallinula chloropus	60	83.33	
20	Coot	Fulica atra	45	62.50	
21	Little Grebe	Tachybaptus ruficollis	36	50.00	
22	Great Crested Grebe	Podiceps cristatus	35	48.61	
23	Oystercatcher	Haematopus ostralegus	47	65.28	
24	Lapwing	Vanellus vanellus	44	61.11	
25	Curlew	Numenius arquata	39	54.17	
26	Jack Snipe	Lymnocryptes minimus	6	8.33	
27	Snipe	Gallinago gallinago	35	48.61	
28	Common Sandpiper	Actitis hypoleucos	35	48.61	
29	Redshank	Tringa totanus	31	43.06	
30	Common Tern	Sterna hirundo	31	43.06	
31	Black-headed Gull	Chroicocephalus ridibundus	63	87.50	
32	Common Gull	Larus canus	45	62.50	
33	Herring Gull	Larus argentatus	67	93.06	
34	Lesser Black-backed Gull	Larus fuscus	71	98.61	
35	Common Guillemot	Uria aalge	9	12.50	
36	Cormorant	Phalacrocorax carbo	57	79.17	
37	Little Egret	Egretta garzetta	39	54.17	
38	Grey Heron	Ardea cinerea	64	88.89	
39	Sparrowhawk	Accipiter nisus	66	91.67	
40	Buzzard	Buteo buteo	71	98.61	
41	Tawny Owl	Strix aluco	51	70.83	
42	Great Spotted Woodpecker	Dendrocopos major	61	84.72	
43	Kestrel	Falco tinnunculus	61	84.72	
44	Peregrine	Falco peregrinus	46	63.89	
45	Jay	Garrulus glandarius	55	76.39	
46	Magpie	Pica pica	70	97.22	
47	Jackdaw	Coloeus monedula	71	98.61	
48	Carrion Crow	Corvus corone	72	100.00	
49	Coal Tit	Periparus ater	56	77.78	
50	Blue Tit	Cyanistes caeruleus	70	97.22	
51	Great Tit	Parus major	71	98.61	
52	Skylark	Alauda arvensis	62	86.11	
53	Sand Martin	Riparia riparia	52	72.22	
54	Swallow	Hirundo rustica	68	94.44	
55	House Martin	Delichon urbicum	60	83.33	
56	Cetti's Warbler	Cettia cetti	22	30.56	
57	Long-tailed Tit	Aegithalos caudatus	66	91.67	
58	Willow Warbler	Phylloscopus trochilus	56	77.78	
59	Chiffchaff	Phylloscopus collybita	69	95.83	
60	Sedge Warbler	Acrocephalus schoenobaenus	36	50.00	
61	Reed Warbler	Acrocephalus scirpaceus	32	44.44	
62	Grasshopper Warbler	Locustella naevia	20	27.78	
63	Blackcap	Sylvia atricapilla	67	93.06	
64	Lesser Whitethroat	Curruca curruca	37	51.39	
65	Whitethroat	Curruca communis	49	68.06	
66	Wren	Troglodytes troglodytes	72	100.00	
67	Nuthatch	Sitta europaea	42	58.33	
68	Treecreeper	Certhia familiaris	44	61.11	
69	Starling	Sturnus vulgaris	70	97.22	
70	Song Thrush	Turdus philomelos	69	95.83	
71	Mistle Thrush	Turdus viscivorus	58	80.56	
72	Blackbird	Turdus merula	72	100.00	
73	Robin	Erithacus rubecula	72	100.00	
74	Wheatear	Oenanthe oenanthe	40	55.56	
75	House Sparrow	Passer domesticus	69	95.83	
76	Dunnock	Prunella modularis	72	100.00	
77	Grey Wagtail	Motacilla cinerea	48	66.67	
78	Pied Wagtail	Motacilla alba	68	94.44	
79	Meadow Pipit	Anthus pratensis	51	70.83	
80	Water Pipit	Anthus spinoletta	3	4.17	
81	Chaffinch	Fringilla coelebs	68	94.44	
82	Bullfinch	Pyrrhula pyrrhula	53	73.61	
83	Greenfinch	Chloris chloris	67	93.06	
84	Linnet	Linaria cannabina	60	83.33	
85	Goldfinch	Carduelis carduelis	70	97.22	
86	Reed Bunting	Emberiza schoeniclus	50	69.44