Alex Hartley: World Life List IOC, All records: Top Blockers Record(s) 1 to 27 of 27 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Common Merganser	Mergus merganser	1183	76.67	
2	Common Pheasant	Phasianus colchicus	1150	74.53	
3	Common Swift	Apus apus	1171	75.89	
4	Eurasian Collared Dove	Streptopelia decaocto	810	52.50	
5	Great Cormorant	Phalacrocorax carbo	1169	75.76	
6	Purple Heron	Ardea purpurea	1052	68.18	
7	Great Spotted Woodpecker	Dendrocopos major	1141	73.95	
8	European Green Woodpecker	Picus viridis	984	63.77	
9	Nuthatch Vanga	Hypositta corallirostris	80	5.18	
10	Eurasian Magpie	Pica pica	1084	70.25	
11	Western Jackdaw	Coloeus monedula	1146	74.27	
12	Hooded Crow	Corvus cornix	1038	67.27	
13	Bohemian Waxwing	Bombycilla garrulus	1009	65.39	
14	Great Tit	Parus major	1091	70.71	
15	Sand Martin	Riparia riparia	1137	73.69	
16	Barn Swallow	Hirundo rustica	1207	78.22	
17	Western House Martin	Delichon urbicum	775	50.23	
18	Long-tailed Tit	Aegithalos caudatus	1042	67.53	
19	Moustached Warbler	Acrocephalus melanopogon	524	33.96	
20	Melodious Warbler	Hippolais polyglotta	759	49.19	
21	Common Blackbird	Turdus merula	1009	65.39	
22	Spotted Flycatcher	Muscicapa striata	877	56.84	
23	Common Nightingale	Luscinia megarhynchos	953	61.76	
24	Black Redstart	Phoenicurus ochruros	1080	69.99	
25	Eurasian Tree Sparrow	Passer montanus	1116	72.33	
26	House Sparrow	Passer domesticus	1220	79.07	
27	White Wagtail	Motacilla alba	1098	71.16