Genus AQUILA

The typical Eagles, constituting the present genus, are large and powerful birds, and, from their grand appearance, have acquired a reputation for courage which they scarcely deserve, as they are much less courageous than the comparatively small Hawks and Falcons.

The bill is strong and slightly lengthened, curved from the cere, the margin of the upper mandible straight or with a very slight festoon ; wings long, the 4th or 5th quill longest; tail moderate, slightly rounded or nearly even; tarsus feathered to the toes; claws curved, strong and sharp, the hind toe and claw powerful.

The Coloration is dark, and in adults as a rule nearly uniform throughout. Eagles prey on mammals, birds, and sometimes on reptiles, frogs, &c, and all or nearly all feed on carrion as well. The genus is found throughout Europe and Asia and North America, and seven species occur in India.

Key to the Species.

a. Nostril elliptical or ear-shaped, higher than broad.
a1. Claws very large, hind claw 2.5-4 in. round curve………………………A. chrysaetus, p. 333.
b1. Claws moderate, hind claw very rarely exceeding 2 in. round curve,
a2. Wing in 21-23, in 23-24.5.
a3. Plumage deep blackish brown, crown and nape tawny………………………A. heliaca ad., p. 334.
b3. Plumage deep umber-brown throughout, or a pale patch on the nape only………………………A. bifasciata ad., [p. 336.
c3. Lower plumage striated ………………………A. heliaca juv., p. 334.
d3. Lower plumage not striated, pale tips to larger wing-coverts and to secondaries………………………A. bifasciata juv., [p. 336
b2. Wing in under 21, in under 22………………………A. vindhiana, p. 337.
b. Nostril round, as broad as high.
c1. Whole head and lower parts uniformly pale tawny or rufous………………………A. fulvescens, p. 339.
d1. Head and lower parts dark brown, or not uniformly coloured.
c2. Wing 19-20, 20-5-21.5………………………A. maculata, p. 340.
d2. Wing about 18, 19………………………A. hastata, p. 341.

* This only applies to Indian species. In the African Machaerhamphus (M. anderssoni) the feathers on the lores have some bristles intermixed.

BookTitle: 
The Fauna Of British India including Ceylon and Burma
Reference: 
Blanford, William Thomas, ed. The Fauna of British India: Including Ceylon and Burma. Vol.3 1895.
Title in Book: 
Genus AQUILA
Book Author: 
William Thomas Blanford
Year: 
1895
Page No: 
332
M_ID: 
2775
M_SN: 
Aquila
Volume: 
Vol. 3
Term name: 
id: 
1690

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