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"WHITE-WINGED BLACK TEEN. 
black; in winter there is a black crescent-shaped mark. Head, 
crown, neck, and nape, deep glossy black with a tint of green; 
in winter spotted with black and pale brown and grey, the 
feathers being bordered with the latter colours; chin, throat, 
and breast, black. Back, black, paler lower down, in winter 
deep bluish grey, black between the shoulders. 
The wings have the first quill feather the longest; they expand 
to the width of two feet and half an inch; and reach about 
three inches beyond the end of the tail; greater wing coverts, 
light grey, in winter dark grey, some spotted with black and 
pale brown and grey, with which the feathers are edged; lesser 
wing coverts, white, deepening into grey down the wing; of 
the primaries, the first three or the first four or five, variously 
according to age, are greyish black with a broad band of 
white across on the base of the inner webs, the shafts white; 
the remainder of the primaries are light grey, the tips and the 
outer web of the first quill darker than the remainder; in 
■winter the primaries are slate-colour, the tips of some of them 
dull white; secondaries and tertiaries, slate grey, in winter 
paler—bluish grey; greater and lesser under wing coverts, deep 
glossy black, but some of them dark grey. Tail, white both 
above and below; upper and under tail coverts, white. Legs 
and toes, coral red, in winter orange yellow; claws, black; the 
webs, which are also red, are very deeply indented. 
The female resembles the male. 
The moult begins at the end of July or beginning of August, 
and the plumage is as follows:—Bill, dusky black, dull reddish 
about the base; the space between it and the eye is white. 
Head, crown, neck on the back, and nape, white with black 
tips to the feathers; chin, white; the breast barred with black 
and white, the feathers being broadly edged with the former 
colour; back on the upper part, black; tertiaries, darker than 
in summer. Legs and toes, dull coral red. 
