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 appear- 
ances are only to be regarded as indications of immaturity. 
Form. — Figure moderately robust ; feathers of occiput considerably elon- 
gated, 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 4J 
of the wings when folded 19 0 
of the tail 14 0 
Inches. Lines. 
Length of the tarsus 4 0 
. of the outer toe 1 6 
of the middle toe 2 2 
of the inner toe 1 3 
of the hinder toe 1 1 
of the hinder claw 2 8 
(Young Female. Plate XLI.) 
Colour. — The top of the head, the chin, the throatf 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 biown ; 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 tint ; 
belly, flanks, vent, and under tail coverts, blackish brown, variegated with bars 
