PIED DUCK. 1s 
and tail-coverts ; below this collar the upper part of the breast 
is white, extending itself over the whole scapulars, wing-coverts, 
and secondaries; the primaries, lower part of the breast, 
whole belly, and vent, are black ; tail, pointed, and of a black- 
ish hoary colour; the fore part of the legs and ridges of the 
toes, pale whitish ash; hind part, the same, bespattered with 
blackish ; webs, black; the edges of both mandibles are 
largely pectinated. In young birds, the whole of the white 
plumage is generally strongly tinged with a yellowish cream 
colour; in old males, these parts are pure white, with the 
exception sometimes of the bristly pointed plumage of the 
cheeks, which retains its cream tint the longest, and, with the 
skinny part of the bill, form two strong peculiarities of this 
species. 
The female measures nineteen inches in length, and twenty- 
seven inextent; bill, exactly asin the male ; sides of the front, 
white ; head, chin, and neck, ashy grey ; upper parts of the 
back and wings, brownish slate; secondaries only white ; 
tertials, hoary ; the white secondaries form a spot on the wing, 
bounded by the black primaries, and four hoary tertials edged 
with black; whole lower parts, a dull ash, skirted with 
brownish white or clay colour ; legs and feet, as in the male; 
the bill in both is marked from the nostrils backwards by a 
singular heart-shaped outline. 
The windpipe of the male measures ten inches in length, 
and has four enlargements, viz., one immediately below the 
mouth, and another at the interval of an inch; it then bends 
largely down to the breast-bone, to which it adheres by two 
strong muscles, and has at that place a third expansion. It 
then becomes flattened, and, before it separates into the lungs, 
has a fourth enlargement much greater than any of the former, 
which is bony, and round, puffing out from the left side. The 
intestines measured six feet; the stomach contained small 
clams and some glutinous matter ; the liver was remarkably 
large. 
