AQUILA CORONATA.
bars, which diminish in width towards the margins of the feathers ; outer vanes
transversely banded, blackish brown and deep hoary grey. Tail blackish
brown, tipped with white, the last half variegated with three broad, deep,
hoary grey bands. The upper mandible and the lower, except at its base,
liver-brown, clouded with reddish brown, the base of the lower mandible dingy
yellow. Eyes and toes yellow; claws a dark horn colour. Most of the
feathers of this bird have a faint silky gloss.
Specimens are frequently obtained in which the under parts are more or
less tinged with pale hyacinth-red, and blotched with brown; such appearances
are only to be regarded as indications of immaturity.
F o rm— Figure moderately robust; feathers of Occiput considerably elongated,
and forming a distinct crest. Bill strongly curved towards the point,
and the festoon on the cutting edge of upper mandible slightly developed.
Wings short, somewhat rounded, and, when folded, reach about two inches
beyond the base of the tail; the fifth and sixth quill feathers equal and longest;
the fourth and seventh equal and a little shorter; the third rather longer,
and the second rather shorter than the eighth; the first nearly five inches
shorter than the two longest. Legs powerful and feathered to the toes. The
toes superiorly with a few transverse plates behind base of claws, elsewhere
coated with small subcircular scales; claws long, powerful, much curved and
flat beneath.
DIMENSIONS.
Inches. Lines.
Length from the point of the bill to
the tip of the tail ............. 34 6
of the bill from the angle of the.
mouth .............................. .. _ 2 4£
of the wings when folded ...... 19 0
of the ta il................................. 14 0
Inches. Lines.
Length of the tarsus............................. 4 0
-of the outer toe....................... l 6
of the middle toe ................. 2 2
of the inner toe ............... l 3
of the hinder toe .................... 1 1
of the hinder claw ............... 2 8
(Young Female. Plate XLI.)^S
C o l o u r .— The top of the head, the chin, the throat, and the feathers of
the crest umber-brown, the tips of the latter cream yellow; the sides of the
head and the upper and lateral parts of the neck dull yellowish brown ; the
interscapulars, back, rump, upper tail coverts, shoulders, lesser wing
coverts, primary and secondary wing coverts and scapulars, rich blackish
brown, with a strong resplendent gloss in certain lights. The secondary
wing coverts and the upper tail coverts partially barred with dusky white,
and the latter also narrowly tipped with the same colour. Breast blackish
brown, all the feathers towards the bases cream-yellow with a reddish tin t;
belly, flanks, vent, and under tail coverts, blackish brown, variegated with bars
A pU IL A CORONATA. (yormg )
(Aves—P la te 4-1)