FERRUGINOUS DUCK 121 
Adult winter, male and female.—Similar to the respec- 
tive nuptial plumages. 
Immature, male and female—Resembles the female 
plumage. 
Brak. Black at the base and tip, the imtermediate 
portion being bright slate-blue. 
Freer. Dull bluish- -orey. 
TRIDES. Crimson. 
AVERAGE MEASUREMENTS. 
TOTAL LENGTH .... aes shoe JS)eiae 
WING oe ee an eee Sep ulin. 
BEAK ~~ was Ey a 
'TARSO- -METATARSUS ee ie Cs ye 
Eae ea SMT shale 
Allied Species and Representative Forms.—F. americana 
with no black at the base of the beak, and with back and 
abdomen of a hghter shade, is the American representative. 
FERRUGINOUS DUCK. Fwligula nyroca (Giildenstidt). 
Coloured Figures —Gould, ‘Birds of Great Britain,’ vol. v, 
pl. 21; Dresser, ‘Birds of Europe,’ vol. vi, pl. 438; 
Lilford, ‘ Coloured Figures,’ vol. vii, pl. 45. 
The Ferruginous Duck is a rare visitor to the British 
Isles, occurring chiefly in winter and early spring. 
In England, it has been met with most. often along 
the east coast. Norfolk has contributed over twenty 
examples; specimens have also been procured from 
Suffolk, Cambridge, Yorkshire, Nottinghamshire, Lan- 
eashire, Northumberland, Oxfordshire, Dorset, Devon, and ° 
Radnorshire. Some two or three examples have been re- 
corded from Scotland, about the Firth of Forth-and the 
Tay (W. Evans). 
It has been recorded on six occasions from Ireland ; 
once from Dublin, and once from Antrim, March, 1871; 
twice from Westmeath, January 21st, 1893, and January 
18th, 1897; twice from the east coast, 1879; once from 
the south of Ireland, November 27th, 1897 (Ussher). 
