GREY-HEADED DUCK. 
joining to the base of the lower mandible, un- 
derneath, the feathers are black : which black- 
ness divides like a fork, and passes on each 
side of the throat ; the throat between them 
being white. The neck ail round, and the 
breast, are wliite. The back is of a dark 
brown or black colour, with a purplish gloss. 
The greater quills of the wing, and the fea- 
thers of the tail, are of a dark brown colour; 
the quills in the middle, or those next to the 
prime-quills, are of a black shining purple, 
with white tips, which form a white line across 
' the wing ; and the remainder of the quills, 
next the back, and the first row of covert- 
feathers above the quills, are also of a dark 
or black colour, with a purple gloss. The 
lesser covert-feathers of the wing are brown 
all round the border which falls on the breast ; 
but, in the middle of the covert-feathers in 
each wing there is a plat of white. The 
covert-feathers within-side of the wing are 
white, except a few light-brown feathers round 
the joint or ridge of the wing. The breast 
gradually loses it's whiteness in the belly, 
which is wholly black. The covert-feathers 
of the tail, both above and beneath, are of a 
bright 
