72, SCAUP. 
white, bordered below with black; tertiaries, dark purple grey. 
The tail, of fourteen feathers, dusky; upper tail coverts, black, 
inclining to brown; under tail coverts, blackish brown. The 
legs, which are short, and the toes long, are blackish blue 
grey, with a dull green tint about the joints; webs, dusky 
black. 
After the breeding-season the male assumes temporarily the 
piumage of the female. 
The female is nearly as large as the male. Bill, dark 
bluish grey or lead-colour, the tooth black. The ‘head and 
front’ are encircled by a ‘broad yellowish white line at the 
base of the upper mandible, to the width of about half an 
inch, and deereasing from thence to the chin; iris, yellow. 
The head has a whitish spot on the sides towards the back. 
The feathers on the crown are larger than the others; it, 
the neck on the back, and the nape, dull or blackish chocolate 
brown, the feathers tinged more or less with a paler tint, 
the sides of the head and neck with green. Breast above, 
dark dull blackish, also with more or less of a paler tint or 
white on the edges of the feathers; below dull tawny white, 
the sides and flanks marbled with zigzag lines of white and 
brown. Back on the upper part, dusky, the tips of the 
feathers lighter grey, thus barred across with irregular dusky 
lines, the middle part dusky black, with a tinge of changeable 
green; below white. 
Greater and lesser wing coverts, dusky black, tinged with 
variable green; primaries, dusky brownish black, with, never- 
theless, a glossy lustre; secondaries, dusky brownish black at 
the tips, the speculum white, with a black border; tertiaries, 
black, with a tint of olive green. ‘Tail, dark dusky brown, 
with a glossy tinge; upper tail coverts, dull blackish brown, 
the feathers more or less margined with a paler tint. Legs 
and toes, bluish lead-colour; claws, black; webs, dark lead- 
colour, nearly black. 
The young male bird resembles the female, but the light 
colour on the back is varied with brown. The young female 
is less distinct in all the colours, and the zigzag black and 
white lines are almost entirely wanting. 
