Geoff Keen: Britain Year List 2021 BOU, All records Record(s) 1 to 82 of 82 total.
Seq.	Species	Scientific Name	Species Available	Species Seen	Species Seen %	Seen by Others	Others %	
1	Pheasants & Allies	Phasianidae	10	5	50	456	97	
2	Ducks, Geese, Swans	Anatidae	61	43	70	464	99	
3	Loons	Gaviidae	5	5	100	370	79	
4	Albatrosses	Diomedeidae	2	1	50	199	42	
5	Petrels, Shearwaters, Diving Petrels	Procellariidae	12	4	33	393	83	
6	Austral Storm Petrels	Oceanitidae	2	1	50	15	3	
7	Northern Storm Petrels	Hydrobatidae	3	1	33	88	18	
8	Grebes	Podicipedidae	6	5	83	455	97	
9	Storks	Ciconiidae	2	1	50	123	26	
10	Ibises, Spoonbills	Threskiornithidae	2	2	100	356	76	
11	Herons, Bitterns	Ardeidae	15	6	40	455	97	
12	Tropicbirds	Phaethontidae	1	0	0	0	0	
13	Frigatebirds	Fregatidae	2	0	0	0	0	
14	Pelicans	Pelecanidae	1	0	0	0	0	
15	Gannets, Boobies	Sulidae	3	1	33	404	86	
16	Cormorants, Shags	Phalacrocoracidae	3	2	66	457	97	
17	Caracaras, Falcons	Falconidae	10	5	50	453	96	
18	Ospreys	Pandionidae	1	1	100	293	62	
19	Kites, Hawks, Eagles	Accipitridae	19	7	36	458	97	
20	Bustards	Otididae	3	0	0	16	3	
21	Rails, Crakes & Coots	Rallidae	12	4	33	459	98	
22	Cranes	Gruidae	2	1	50	198	42	
23	Stone-curlews, Thick-knees	Burhinidae	1	1	100	167	35	
24	Oystercatchers	Haematopodidae	1	1	100	447	95	
25	Stilts, Avocets	Recurvirostridae	2	2	100	395	84	
26	Plovers	Charadriidae	18	10	55	456	97	
27	Sandpipers, Snipes	Scolopacidae	54	32	59	452	96	
28	Coursers, Pratincoles	Glareolidae	4	1	25	59	12	
29	Gulls, Terns, Skimmers	Laridae	45	23	51	462	98	
30	Skuas	Stercorariidae	5	1	20	265	56	
31	Auks	Alcidae	10	5	50	394	84	
32	Sandgrouse	Pteroclidae	1	0	0	0	0	
33	Pigeons, Doves	Columbidae	7	5	71	463	98	
34	Old World Parrots	Psittaculidae	1	1	100	289	61	
35	Cuckoos	Cuculidae	4	1	25	381	81	
36	Owls	Strigidae	8	3	37	404	86	
37	Nightjars	Caprimulgidae	4	1	25	204	43	
38	Swifts	Apodidae	8	1	12	429	91	
39	Rollers	Coraciidae	1	1	100	112	23	
40	Kingfishers	Alcedinidae	2	2	100	411	87	
41	Bee-eaters	Meropidae	2	1	50	53	11	
42	Hoopoes	Upupidae	1	1	100	91	19	
43	Woodpeckers	Picidae	5	3	60	449	95	
44	Tyrant Flycatchers, Calyptura	Tyrannidae	5	0	0	0	0	
45	Shrikes	Laniidae	9	3	33	198	42	
46	Vireos, Greenlets, Shrike-babblers	Vireonidae	3	1	33	25	5	
47	Figbirds, Old World Orioles, Piopios	Oriolidae	1	1	100	56	11	
48	Crows, Jays	Corvidae	9	8	88	462	98	
49	Waxwings	Bombycillidae	2	0	0	11	2	
50	Tits, Chickadees	Paridae	6	5	83	462	98	
51	Penduline Tits	Remizidae	1	1	100	24	5	
52	Swallows, Martins	Hirundinidae	8	3	37	440	94	
53	Bushtits	Aegithalidae	1	1	100	452	96	
54	Larks	Alaudidae	9	4	44	439	93	
55	Cisticolas & Allies	Cisticolidae	1	0	0	0	0	
56	Cettia Bush Warblers & Allies	Cettiidae	1	1	100	386	82	
57	Grassbirds & Allies	Locustellidae	5	3	60	302	64	
58	Reed Warblers & Allies	Acrocephalidae	15	6	40	424	90	
59	Leaf Warblers	Phylloscopidae	18	11	61	444	94	
60	Sylviid Babblers	Sylviidae	16	6	37	446	95	
61	Bearded Reedling	Panuridae	1	1	100	298	63	
62	Goldcrests, Kinglets	Regulidae	3	2	66	427	91	
63	Wrens	Troglodytidae	1	1	100	457	97	
64	Nuthatches	Sittidae	2	1	50	431	92	
65	Wallcreeper	Tichodromidae	1	0	0	0	0	
66	Treecreepers	Certhiidae	2	1	50	419	89	
67	Mockingbirds, Thrashers	Mimidae	3	1	33	131	27	
68	Starlings, Rhabdornises	Sturnidae	2	2	100	457	97	
69	Thrushes	Turdidae	20	6	30	461	98	
70	Chats, Old World Flycatchers	Muscicapidae	32	15	46	461	98	
71	Dippers	Cinclidae	1	1	100	288	61	
72	Old World Sparrows, Snowfinches	Passeridae	4	2	50	457	97	
73	Accentors	Prunellidae	3	1	33	461	98	
74	Wagtails, Pipits	Motacillidae	16	11	68	460	98	
75	Finches, Euphonias	Fringillidae	22	13	59	460	98	
76	New World Warblers	Parulidae	19	0	0	0	0	
77	Oropendolas, New World Orioles, Blackbirds	Icteridae	4	0	0	0	0	
78	Buntings	Emberizidae	18	6	33	445	95	
79	Longspurs, Snow Buntings	Calcariidae	2	1	50	260	55	
80	New World Sparrows	Passerellidae	7	1	14	64	13	
81	Cardinals & Allies	Cardinalidae	4	0	0	3	0	
82	Barn Owls	Tytonidae	1	1	100	370	79