LONG-TAILED DUCK. 109 
Length to end of tail 153 inches, to end of wings 143, to end of 
claws 16%; extent of wings 26}; wing from flexure 8 ; middle tail- 
feathers 23%, lateral 2}; bill along the ridge 13%, along the edge of 
lower mandible 1,°s. 
Adult male in winter. Plate CCCXII. Fig. 2. 
The outer half of the bill rich orange-yellow, that colour extending 
to the base along the ridge, the unguis and the basal half black, as well 
as the unguis and edges of the lower mandible. The head, neck, the 
fore part of back and scapulars, white ; the space about the eye pale 
greyish-red, and a large oblong patch of chocolate brown on the side 
of the neck. The upper parts, including the four middle tail-feathers, 
are brownish-black, but the secondary quills tinged with reddish-brown, 
and having paler margins. The anterior half of the breast chocolate 
brown, the rest of the lower parts and the four lateral tail-feathers 
white. 
Unfledged young. Plate CCCXII. 
The young when newly excluded are covered with stiffish down. 
Bill and feet greenish-dusky ; the upper parts chocolate-brown ; a small 
spot of white under the eye; throat and lower parts whitish, as well 
as an oblong patch on the cheeks. 
The young male in winter, that is, after its first moult, has the bill 
and legs dusky green. The head and half of the neck are whitish ; 
the upper part of the former and a patch on the side of the latter mottled 
with brownish-black and chocolate. The upper parts brownish-black, 
variegated with brownish-red, the still unelongated scapulars chiefly of 
the latter colour. A broad undefined belt of reddish-brown over the 
lower fore part of the neck ; the rest of the lower parts greyish-white. 
Length to end of tail 22 inches; extent of wings 29. 
The young female in winter is similar to the adult, but with the 
upper parts paler, the light-coloured patches on the head and neck more 
dusky, and the lower parts of a less pure white. 
Adult males, assuming the summer plumage, about April, present 
a curious intermixture of the variously coloured feathers of the two 
seasons. 
