GREY-HEADED 
DUCK. 
the common Tame Duck. Some of the prin- 
cipal measures are as follow: the bill, from 
the point to the angles of the mouth, is two 
inches ; froni the point, to the extremity of 
those broad parts of the ball of the upper 
mandible that fall on each side of the fore- 
head, is two inches and a quarter ; the wing, 
when it is closed, is eleven inches ; the leg 
below knee, is hardly two inches; and the 
middle toe is two inches and three quarters 
long. The bill is of a red colour, black or 
dusky at it's point. The base of the upper 
mandible, in it's upper part, extends itself into 
the forehead, on each side, in the form of a 
broad flattish Bean. At the roof of the upper 
mandible, the feathers are black, and run into 
the base of the bill with three angles ; one in 
the middie of the forehead, and one on each 
side. The eye is also encompassed wdth black 
feathers., which end in a point backward. The 
top and hinder-part of the head is of a light- 
blueish ash-colour ; the sides of the head, , be- 
neath the eyes, are of a light green; and there 
are some black spots, that run in a line from 
the eye, down the sides of the head, and part 
the ash-colour from the green. Immediately 
joining 
