Gary Stewart: St. James's Park Life List BOU, All records: Top Blockers Record(s) 1 to 21 of 21 total.
Seq.	Species	Scientific Name	Seen By Other Listers	Other Listers (%)	
1	Greylag Goose	Anser anser	1	100.00	
2	Mute Swan	Cygnus olor	1	100.00	
3	Gadwall	Mareca strepera	1	100.00	
4	Wigeon	Mareca penelope	1	100.00	
5	Mallard	Anas platyrhynchos	1	100.00	
6	Red-crested Pochard	Netta rufina	1	100.00	
7	Pochard	Aythya ferina	1	100.00	
8	Tufted Duck	Aythya fuligula	1	100.00	
9	Ruddy Duck	Oxyura jamaicensis	1	100.00	
10	Woodpigeon	Columba palumbus	1	100.00	
11	Moorhen	Gallinula chloropus	1	100.00	
12	Coot	Fulica atra	1	100.00	
13	Little Grebe	Tachybaptus ruficollis	1	100.00	
14	Great Crested Grebe	Podiceps cristatus	1	100.00	
15	Black-headed Gull	Chroicocephalus ridibundus	1	100.00	
16	Herring Gull	Larus argentatus	1	100.00	
17	Cormorant	Phalacrocorax carbo	1	100.00	
18	Grey Heron	Ardea cinerea	1	100.00	
19	Magpie	Pica pica	1	100.00	
20	Carrion Crow	Corvus corone	1	100.00	
21	Robin	Erithacus rubecula	1	100.00