28 
W. BICKERTON-REVIEW OF 
Now, referring back to our Hertfordshire list of 219 species, 
I find that of 39 of these species only one visit has been recorded, 
18 species have only been recorded twice, 11 species three times, 
and 6 species four times. The total number of these species that 
have been recorded less than five times is therefore 74, the list 
of which is set out below. 
Birds recorded once only. 
Bock-Thrush.— Monticola saxatilis (1843). 
Black Bedstart.— Ruticilla titys (1893). 
Hartford Warbler.— Silvia undata (1897) (B.). 
Fire-crested Wren.— Regulus ignicapillus (1887). 
Marsh-Warbler.— Acroceplialus palmtris (1883). 
Great Beed- Warbler.— A . turdoides (1865). 
W r ater-Pipit.— Anthus spipoletta (1886). 
Mealy Bedpoll.— Linota linaria (1883). 
Two-barred Crossbill.— Loxia bifasciata (1890). 
Bustic Bunting.— Ember iza rustica (1882). 
American Bed-winged Starling.— Agelceus phceniceus (1879). 
Bose-coloured Starling.— Pastor roseus (1902). 
Chough.— Pyrrhocorax graculus (1884) (B.). 
Wood-Lark.— Alauda arborea (1878) (B.). 
Short-toed Lark.— A. br achy dactyl a (1886). 
Boiler.— Coracias garrulus (1852). 
Scops Owl.— Scops giu (1902). 
Montagu’s Harrier. — Circus cineraxeus (1875). 
White-tailed Eagle.— Haliaetus albicilla (1877) (B.). 
Kite.— Milvus ictinus (1840) (B.). 
Grey Lag-Goose.— Anser cinereus (1886) (B.). 
White-fronted Goose.— A. albifrons. 
Canada Goose.— Bernicla canadensis (1893). 
North American Summer Duck.— Aix sponsa (1891). 
Bed-crested Pochard.— Fuligula rufina (1887). 
Baer’s Pochard.— Nyroca Baeri (1901). 
Long-tailed Duck.— Harelda glacialis (1892). 
Bed-breasted Merganser.— Mergus serrator (1840-50). 
Virginian Colin. — Ortyx virginianus (1882). 
Little Crake.— Porzanaparva (1887). 
Baillon’s Crake.— P. bailloni (1891). 
Little Stint. —Tringa minuta (1885). 
Temminck’s Stint. — T. temmincki (1887). 
Wood-Sandpiper.— Totanus glareola (1886). 
Bar-tailed Godwit.— Limosa lapponica (1880). 
Black-tailed Godwit.— L. belgica (1886). 
Sandwich Tern.— Sterna cantiaca (1886). 
Arctic Tern— S. macrura (1886). 
Bed-necked Grebe.— Podicipes griseigena. 
Birds recorded twice. 
Woodchat.— Lanius pomeranus (1873 and 1885). 
Hoopoe.— TJpupa epops (1882 and 1888). 
