THE GOLDEN EAGLE
AQUILA CHRYSAËTOS
Tail longer than the wings, rounded; plumage of the head, back of the neck and legs, lustrous reddish brown, of the rest of the body dark brown; primaries nearly black; secondaries brownish black; tail dark grey, barred and tipped with brownish black; beak bluish at the base, black at the extremity; iris brown; cere and feet yellow; claws bluish black. Length of the male three feet, that of the female more; breadth eight feet. Eggs dirty white, mottled with pale reddish brown.
The fable of the Eagle soaring to a great height in order to enjoy a gaze at the sun in his unclouded brilliancy, is founded probably on a belief of the ancients, thus stated by the naturalist Pliny:—'Before its young are as yet fledged, the Eagle compels them to gaze at the rays of the sun, and if it observes one to wink or show a watery eye casts it from the nest as a degenerate offspring; if, on the contrary, it preserves a steady gaze, it is saved from this hard fate, and brought up.'
'The Golden Eagle', says Macgillivray, 'seems to prefer live prey to carrion, and easily secures Grouse, in searching for which it flies low on the moors, sailing and wheeling at intervals. Hares, roes, and even red deer, it also attacks, but it does not haunt the shores for fish so much as the Sea Eagle does. There seems very little probability that Eagles have the sense of smell very acute, but that their vision is so is evident. I am not, however, inclined to think that they perceive objects from the vast height to which they sometimes soar, because I never saw one descend from such an elevation in a manner indicating that it had observed a carcase or other eatable object; whereas, on the other hand, I have very frequently seen them flying along the sides of the hills, at a small height, obviously in search of food, in a manner somewhat resembling that of the Sparrow-Hawk, but with much less rapidity.'
The Golden Eagle breeds only in the Highlands, but it is not an unfrequent visitor to the Lowlands of Scotland in the cold season. Those birds which have been recorded as visiting England were generally not this species but the White-tailed or Sea Eagle in immature plumage. It prefers mountains or extensive forests, building its eyrie either on rocks or lofty trees. In France, Sweden, Spain, and Switzerland, it is frequently observed. Its note, called in the Highlands 'a bark', is sharp and loud, resembling at a distance, as, on the only occasion I ever heard it, it seemed to me, the croak of a Raven. It lays two or sometimes three eggs, and feeds its young, which are very voracious, on birds and the smaller quadrupeds.
THE WHITE-TAILED (SEA) EAGLE
HALIAËTUS ALBICILLA
Tail not longer than the wings; upper plumage brown, that of the head and neck lightest, lower, chocolate brown; tail white; beak, cere, and feet yellowish white; claws black. In young birds the tail is dark brown, and the beak and cere are of a darker hue. Length of the male, two feet four inches; of the female, two feet ten inches. Eggs dirty white with a few pale red marks.