Joseph Griffin: World Life List IOC, All records: Top Blockers Record(s) 1 to 114 of 114 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Common Ostrich	Struthio camelus	574	37.13	
2	Whooper Swan	Cygnus cygnus	1156	74.77	
3	Egyptian Goose	Alopochen aegyptiaca	1131	73.16	
4	South African Shelduck	Tadorna cana	286	18.50	
5	Helmeted Guineafowl	Numida meleagris	641	41.46	
6	Red-necked Spurfowl	Pternistis afer	298	19.28	
7	Fiery-necked Nightjar	Caprimulgus pectoralis	245	15.85	
8	Greater Ani	Crotophaga major	342	22.12	
9	Smooth-billed Ani	Crotophaga ani	545	35.25	
10	Speckled Pigeon	Columba guinea	579	37.45	
11	Ring-necked Dove	Streptopelia capicola	494	31.95	
12	Emerald-spotted Wood Dove	Turtur chalcospilos	442	28.59	
13	Galapagos Dove	Zenaida galapagoensis	86	5.56	
14	Common Gallinule	Gallinula galeata	553	35.77	
15	Blue Crane	Grus paradisea	293	18.95	
16	Spotted Thick-knee	Burhinus capensis	420	27.17	
17	American Oystercatcher	Haematopus palliatus	527	34.09	
18	European Golden Plover	Pluvialis apricaria	1136	73.48	
19	Three-banded Plover	Charadrius tricollaris	494	31.95	
20	Blacksmith Lapwing	Vanellus armatus	515	33.31	
21	Crowned Lapwing	Vanellus coronatus	503	32.54	
22	Black-tailed Godwit	Limosa limosa	1194	77.23	
23	Brown Noddy	Anous stolidus	431	27.88	
24	Lava Gull	Leucophaeus fuliginosus	87	5.63	
25	Arctic Skua	Stercorarius parasiticus	1045	67.59	
26	Red-throated Diver	Gavia stellata	1106	71.54	
27	Blue-footed Booby	Sula nebouxii	247	15.98	
28	African Sacred Ibis	Threskiornis aethiopicus	653	42.24	
29	Hadada Ibis	Bostrychia hagedash	592	38.29	
30	Striated Heron	Butorides striata	795	51.42	
31	Lava Heron	Butorides sundevalli	78	5.05	
32	Western Cattle Egret	Bubulcus ibis	1121	72.51	
33	Great Egret	Ardea alba	1213	78.46	
34	Grey Heron	Ardea cinerea	1248	80.72	
35	Great Blue Heron	Ardea herodias	838	54.20	
36	Cocoi Heron	Ardea cocoi	400	25.87	
37	Black-headed Heron	Ardea melanocephala	593	38.36	
38	Brown Pelican	Pelecanus occidentalis	794	51.36	
39	Hoatzin	Opisthocomus hoazin	271	17.53	
40	King Vulture	Sarcoramphus papa	406	26.26	
41	Secretarybird	Sagittarius serpentarius	462	29.88	
42	Black-shouldered Kite	Elanus axillaris	399	25.81	
43	Griffon Vulture	Gyps fulvus	899	58.15	
44	Martial Eagle	Polemaetus bellicosus	478	30.92	
45	Double-toothed Kite	Harpagus bidentatus	347	22.45	
46	Pale Chanting Goshawk	Melierax canorus	298	19.28	
47	Western Marsh Harrier	Circus aeruginosus	1173	75.87	
48	Slate-colored Hawk	Buteogallus schistaceus	125	8.09	
49	Jackal Buzzard	Buteo rufofuscus	306	19.79	
50	Cape Eagle-Owl	Bubo capensis	125	8.09	
51	Speckled Mousebird	Colius striatus	494	31.95	
52	Red-faced Mousebird	Urocolius indicus	329	21.28	
53	Eurasian Hoopoe	Upupa epops	1036	67.01	
54	African Hoopoe	Upupa africana	444	28.72	
55	Brown-hooded Kingfisher	Halcyon albiventris	354	22.90	
56	Amazon Kingfisher	Chloroceryle amazona	471	30.47	
57	American Pygmy Kingfisher	Chloroceryle aenea	345	22.32	
58	Ringed Kingfisher	Megaceryle torquata	554	35.83	
59	Pied Puffbird	Notharchus tectus	203	13.13	
60	Yellow-billed Nunbird	Monasa flavirostris	84	5.43	
61	Many-banded Aracari	Pteroglossus pluricinctus	156	10.09	
62	White-throated Toucan	Ramphastos tucanus	239	15.46	
63	Black Woodpecker	Dryocopus martius	673	43.53	
64	Cobalt-winged Parakeet	Brotogeris cyanoptera	211	13.65	
65	Blue-and-yellow Macaw	Ara ararauna	260	16.82	
66	Slender-footed Tyrannulet	Zimmerius gracilipes	103	6.66	
67	Great Kiskadee	Pitangus sulphuratus	601	38.87	
68	Lesser Kiskadee	Philohydor lictor	290	18.76	
69	Dusky-capped Flycatcher	Myiarchus tuberculifer	465	30.08	
70	Bare-necked Fruitcrow	Gymnoderus foetidus	178	11.51	
71	Southern Boubou	Laniarius ferrugineus	278	17.98	
72	Black-headed Oriole	Oriolus larvatus	414	26.78	
73	Fork-tailed Drongo	Dicrurus adsimilis	495	32.02	
74	Southern Fiscal	Lanius collaris	375	24.26	
75	Violaceous Jay	Cyanocorax violaceus	233	15.07	
76	Azure-winged Magpie	Cyanopica cyanus	375	24.26	
77	Cape Crow	Corvus capensis	401	25.94	
78	Pied Crow	Corvus albus	627	40.56	
79	White-necked Raven	Corvus albicollis	372	24.06	
80	Crested Tit	Lophophanes cristatus	954	61.71	
81	Rufous-naped Lark	Mirafra africana	243	15.72	
82	Yellow-bellied Greenbul	Chlorocichla flaviventris	255	16.49	
83	Dark-capped Bulbul	Pycnonotus tricolor	310	20.05	
84	Cape Bulbul	Pycnonotus capensis	255	16.49	
85	Black Saw-wing	Psalidoprocne pristoptera	366	23.67	
86	Black-capped Donacobius	Donacobius atricapilla	287	18.56	
87	Bar-throated Apalis	Apalis thoracica	263	17.01	
88	Chestnut-vented Warbler	Curruca subcoerulea	223	14.42	
89	Galapagos Mockingbird	Mimus parvulus	91	5.89	
90	Cape Starling	Lamprotornis nitens	330	21.35	
91	Pied Starling	Lamprotornis bicolor	259	16.75	
92	Red-billed Oxpecker	Buphagus erythrorynchus	466	30.14	
93	European Pied Flycatcher	Ficedula hypoleuca	988	63.91	
94	Cape Rock Thrush	Monticola rupestris	238	15.39	
95	African Stonechat	Saxicola torquatus	389	25.16	
96	Ant-eating Chat	Myrmecocichla formicivora	223	14.42	
97	Amethyst Sunbird	Chalcomitra amethystina	346	22.38	
98	Greater Double-collared Sunbird	Cinnyris afer	222	14.36	
99	Spanish Sparrow	Passer hispaniolensis	873	56.47	
100	Cape Wagtail	Motacilla capensis	404	26.13	
101	Streaky-headed Seedeater	Crithagra gularis	189	12.23	
102	European Serin	Serinus serinus	963	62.29	
103	White-lored Euphonia	Euphonia chrysopasta	154	9.96	
104	Orange-bellied Euphonia	Euphonia xanthogaster	294	19.02	
105	Crested Oropendola	Psarocolius decumanus	386	24.97	
106	Yellow-rumped Cacique	Cacicus cela	369	23.87	
107	Purple Honeycreeper	Cyanerpes caeruleus	301	19.47	
108	Vegetarian Finch	Platyspiza crassirostris	53	3.43	
109	Woodpecker Finch	Camarhynchus pallidus	50	3.23	
110	Palm Tanager	Thraupis palmarum	503	32.54	
111	Masked Tanager	Stilpnia nigrocincta	143	9.25	
112	Turquoise Tanager	Tangara mexicana	190	12.29	
113	Opal-crowned Tanager	Tangara callophrys	119	7.70	
114	Opal-rumped Tanager	Tangara velia	143	9.25