AQUILIN A. 41 
Young.—The bill is brownish-black ; the cere greenish-yellow ; 
the feet yellow; the claws black ; the bases of all the feathers are 
brownish-white ; their middle parts light reddish-brown ; their 
tips only blackish-brown ; the head and nape are dark brown ; each 
feather with a minute brownish-white spot on the tip; on the 
middle of the back and on the wings light reddish-brown is the 
prevalent color; the black tips of comparatively small extent; on 
the third part of the back there is much white, that color ex- 
tending further from the base ; the quills and larger wing-coverts 
are blackish-brown, with a tinge of grey ; the tail feathers brown- 
ish-white in the centre, black towards the margins, with irregular 
white dots; the lower parts are of the same color as the back, 
or are pale reddish-brown, marked with longitudinal streaks and 
spots of dark brown; the lower wing-coverts brown; the tail- 
coverts white, with light-brown tips. 
Progress towards Maturity.—In the second year the young 
exhibits little difference, being, however, of a darker tint on the 
back and wings. An individual at this age has the bill brownish- 
black, tinged with blue; its base and the cere greenish-yellow ; the 
iris hazel-brown ; the feet gamboge ; the claws brownish-black ; the 
head and nape are dark brown; the base of all the feathers, on the 
upper parts, is white ; on the hind-neck and foreparts of the back 
that color, tinged with yellowish-brown, prevails, a lanceolate or 
obovate deep brown spot, being on each feather towards the end ; 
on the middle of the back the brown prevails, on the hind part 
white, and the rump and upper tail-coverts are light brown, tipped 
darker; the scapulars are dark brown with a purplish tinge; 
the wing-coverts dark brown at the end, but most of the larger 
pale brown in the greater part of their extent; the quills black, 
with a purplish-grey tinge, the secondaries gradually becoming 
more brown, and all faintly variegated with light grey and 
brown on the inner webs; the tail is brownish-black, with a 
tinge of grey, and more or less finely mottled with whitish ; the 
lower parts may be described as brownish-white, longitudinally 
streaked with dark brown, there being a lanceolate patch of the 
latter on each feather ; the lower wing-coverts and feathers of 
the legs dark brown ;the lower surface of the quills bluish-grey ; 
the lower tail-coverts white, tipped with brown ; the down on the 
breast pure white. 
Remarks.—In this species the bill and iris change from 
dusky-brown to pale yellow, and the plumage, at first white at 
the base, and dark brown at the end, gradually loses its white, 
while the dark parts become paler and more extended, the final 
coloring being more uniform. 
The tail forms no exception, for its basal white also diminishes 
but the white, which is gradually substituted for the brownish- 
black, spreads from near the end to the base.-—Macgillivray. 
_ The European White-tailed Sea Eagle occurs along the banks 
of the Indus ; they are mostly immature specimens, ; 
