What real difference exists between the eagle and the vulture? The eagle passionately loves blood, and prefers living flesh, very rarely eating the dead. The vulture seldom kills, and directly benefits life by restoring to its service and to the grand current of vital circulation the disorganized objects which would associate with others to their disorganization. The eagle lives upon murder only, and may justly be entitled the minister of Death. On the contrary, the vulture is the servant of Life.
Owing to his strength and beauty, the eagle has been adopted as an emblem by more than one warrior race which lived, like himself, by rapine. The Persians and the Romans chose him. We now associate him with the lofty ideas which these great empires originate. Grave people—even an Aristotle—have accredited the absurd fable that he daringly eyed the sun, and put his offspring to the test, by making them also gaze upon it. Once started on this glorious road, the philosophers halted no more. Buffon went the furthest. He eulogizes the eagle for his temperance. He does not eat at all, says he. The truth is, that when his prey is large, he feasts himself on the spot, and carries but a small portion to his family. The king of the air, says he again, disdains small animals. But observation points to a directly opposite conclusion. The ordinary eagle attacks with eagerness the most timid of beings, the hare; the spotted eagle assails the duck. The booted eagle has a preference for field mice and house mice, and eats them so greedily that he swallows them without killing them. The bald-headed eagle, or pygargo, will frequently slay his own young, and often drives them from the nest before they can support themselves.
Near Havre I have observed one instance of truly royal nobility, and, above all, of sobriety, in an eagle. A bird, captured at sea, but which has fallen into far too kindly hands in a butcher's house, is so gorged with an abundance of food obtained without fighting, that he appears to regret nothing. A Falstaff of an eagle, he grows fat, and cares no longer for the chase, or the plains of heaven. If he no longer fixedly eyes the sun, he watches the kitchen, and for a titbit allows the children to drag him by the tail.
If rank is to be decided by strength, the first place must not be given to the eagle, but to the bird which figures in the "Thousand and One Nights" under the name of Roc, the condor, the giant of gigantic mountains, the Cordilleras. It is the largest of the vultures—is, fortunately, the rarest—and the most destructive, as it feeds only on live prey. When it meets with a large animal, it so gorges itself with meat that it is unable to stir, and may then be killed with a few blows of a stick.
To judge these species truly we must examine the eyrie of the eagle, the rude, ill-constructed platform which serves for its nest; compare this rough and clumsy work—I do not say with the delicate chef-d'œuvre of a chaffinch's nest—but with the constructions of insects, the excavations of ants, where the industrious workman varies his art to infinity, and displays a genius so singular in its foresight and resources.
The traditional esteem which man cherishes for the courage of the great Raptores is much diminished when we read, in Wilson, that a tiny bird, a fly-catcher, such as the purple martin, will hunt the great black eagle, pursue it, harass it, banish it from its district, give it not a moment's repose. It is a truly extraordinary spectacle to see this little hero, adding all his weight to his strength, that he may make the greater impression, rise and let himself drop from the clouds on the back of the large robber, mount without letting go, and prick him forward with his beak in lieu of a spur.
Without going so far as America, you may see, in the Jardin des Plantes, the ascendancy of the little over the great, of mind over matter, in the singular tête-à-tête of the gypaetus and the crow. The latter, a very feeble animal, and the feeblest of birds of prey, which in his black garb has the air of a pedagogue, labours hard to civilize his brutal fellow-prisoner, the gypaetus. It is amusing to observe how he teaches him to play—humanizes him, so to speak—by a hundred tricks of his own invention, and refines his rude nature. This comedy is performed with special distinction when the crow has a reasonable number of spectators. It has appeared to me that he disdains to exhibit his savoir-faire before a single eye-witness. He calculates upon their assistance, earns their respect in case of need. I have seen him dart back with his beak the little pebbles which a child had flung at him. The most remarkable pastime which he teaches to his big friend is, to make him hold by one end a stick which he himself draws by the other. This show of a struggle between strength and weakness, this simulated equality, is well adapted to soften the barbarian, and though at first he gives but little heed to it, he afterwards yields to continued urgency, and ends by throwing himself into the sport with a savage good temper.
In the presence of this repulsively ferocious figure, armed with invincible talons and a beak tipped with iron, which would kill at the first blow, the crow has not the least fear. With the security of a superior mind, before this heavy mass he goes, he comes, he wheels about, he snatches its prey before its eyes; the other growls, but too late; his tutor, far more nimble, with his black eye, metallic and lustrous as steel, has seen the forward movement; he leaps away; if need be, he climbs a branch or two higher; he growls in his turn—he admonishes his companion.