LONG-TAILED DUCK 133 
Adult male, post-nuptial or eclipse.—‘ Kclipse male 
resembles a faded female, but much paler on the scapulars ; 
assumed about middle of August.” (Described by Mr. F. 
Coburn, from a specimen in his collection.) 
Adult female nuptial—Head, neck, and back, brown ; 
sides of abdomen, tinged with greyish-brown. 
Adult winter, male and female.—Similar to the respective 
nuptial plumages. 
Immature, male and female.—Resembles the female 
plumage. 
Beak. Bluish. 
Fret. Yellowish-pink. 
Indes. Dark brown. 
Kees. White, tinged with green: clutch, ten. 
AVERAGE MEASUREMENTS. 
TOTAL LENGTH ... A ee lie aha) 
WING wae en Aas mae GrD) 
BEAK ee a2 oF ae i tear 
TARSO-METATARSUS oa te 
Eae a ce ee aA D5) a. 
LONG-TAILED DUCK. JAHarelda glacialis (Linneus). 
Coloured Figures.—Gould, ‘ Birds of Great Britain,’ vol. v, pl. 33; 
Dresser, ‘ Birds of Europe,’ vol. vi, pls. 443, 444; Lilford, 
‘Coloured Figures,’ vol. vii, pl. 50. 
Around the coasts of Scotland and the north-west of 
Ireland, small gatherings of Long-tailed Ducks, active and 
sprightly-looking, may be seen at times riding on the 
rough waves of the winter-sea, their lvely gambols and 
clamorous voices telling us that they are in the zenith of 
enjoyment in their maritime home. 
Before October, few appear on our coasts, and most of 
the birds depart in April. Along the southern and south- 
western sea-board of England and Ireland this species 
is somewhat uncommon ; proceeding northward it becomes 
more plentiful, large numbers visiting several of the Scottish 
Islands. 
