I have said that a careless observer would mistake the one species for the other. They are nearly of the same size and colour, though the carrion-crow is of a deeper black than the buzzard; but there are other points of difference that would strike the eye of a naturalist at once. The buzzard is a much more handsomely formed bird, and is more graceful, both upon the ground and while sailing through the air. His wings are longer and more elegantly plumed, and his tail is more tapering. The skin of his naked head and neck, as well as that of his legs, is of a reddish or flesh colour; while the same parts of the black vulture are a mixture of black and grey—the black being caused by a down that grows thinly over the skin. They are easily distinguished in the air. The black vulture flies rather heavily—flapping his wings several times with a quick repetition, and then holding them horizontally for a hundred yards or so—while his short ill-proportioned tail is spread out like a fan. The buzzard, on the contrary, holds his wings at rest—not in a horizontal position, but bent considerably upward. In this attitude he will skim along for a quarter of a mile, without a single stroke of his wings, and that, too, not downward as may be supposed, but along a level, or a line often curving upward! How he executes this upward movement is not known. Some suppose that he possesses the power of inflating himself with heated air, which enables him to soar upward without using his wings. This theory is not very clear, and requires demonstration before it can be accepted as the true one. Others say that he is carried up by the impetus he has already obtained, by having previously descended from an equal or greater height. This is not true, however, as the buzzard may be often seen to rise in this way after a long flight along the level line. It is just possible that the same principle by which the New Holland savages direct their boomerangs, or by which flat stones thrown horizontally often take an upward direction—a fact known to every boy—I say it is just possible that this principle, as yet but little understood, may be instructively acted on by the buzzard, and have something to do with his flight. Be the facts as they may, it is an interesting sight to watch one of these birds, with broad wings outlined against the blue background of the heavens, now swimming in circles, now shooting off in horizontal lines, and anon soaring upward or tracing the undulating curves of the ogee. It is, to say the least of it, a striking and beautiful sight.
The turkey-buzzard is, upon the whole, a nobler bird than the black vulture. There is more of the eagle about him. Both, it is true, are carrion-feeders, like all vultures; but the buzzard also hunts after other food, such as snakes, lizards, and small quadrupeds. He will attack young lambs or pigs, when a good opportunity offers. So, too, will the black vulture, but not so frequently. Neither of them, however, do much harm in this respect; and their preying on such animals is an exception, and not a rule. They only do so, probably, when driven to it by hunger. Both species are gregarious, although they do not always appear in flocks. The buzzards, particularly, are often seen hunting alone, or in twos or threes; but their mode of life brings them together in large numbers. They often assemble—both buzzards and black vultures—to the number of hundreds, over a single carrion. The buzzards, however, are not so plenty as the black vultures; and in one of these flocks more than three-fourths will be found of the latter species. The buzzards are the shyer birds; and they are less disposed to keep together in flocks. It has even been said that these are not gregarious, as they are often seen alone in the high regions of the air. But it is certain that not only do numbers of them roost together at night, but they even associate with the black vultures at such times.
In most countries the vulture is a privileged bird. He is looked upon as a cheap and useful scavenger, clearing away the carcasses of dead animals, that would otherwise pollute the atmosphere. This is a matter of much importance in hot countries; and it is only in such countries that vultures are commonly found. What a beautiful illustration of the completeness of Nature’s laws! As you get into high latitudes and colder regions—where the air is not so readily tainted by putrid substances—the necessity for such a scavenger no longer exists, and he is rarely met with. There the great vulture gives place to the croaking raven, and the small carrion-crow.
Vultures, I have said, are privileged birds. In most countries they are protected by law. This is the case with regard to the present species, both in English and Spanish America, where there is a fine for killing them. The consequence is, they are seldom molested; and in many places are so tame, that they will permit you to come within a few feet of them. In the cities and villages of the Southern States they alight in the streets, and go to sleep upon the house-tops. They do the same in the cities of Mexico and South America, where both species are also found.
As soon as our young hunters had got opposite the cliff where the vultures were, they reined up, determined to remain awhile, and watch the manoeuvres of the birds. They were curious to see how the latter would conduct themselves with a prey so singularly situated, as was the carcass of the cimmaron. They did not dismount, but sat in their saddles, about an hundred yards from the cliff. The vultures, of course, did not regard their presence; but continued to alight, both upon the escarpment of the precipice and upon the loose rocks at its foot, as if no one was near.
“How very like the buzzards are to hen turkeys!” remarked François.
“Yes,” rejoined Lucien, “that is the reason why they are called ‘turkey-buzzards.’”
François’ observation was a very natural one. There are no two birds, not absolutely of the same species, that are more like each other than a turkey-buzzard and a small-sized turkey-hen—that is, the common domestic turkey of the black variety, which, like the buzzard, is usually of a brownish colour. So like are they, that, at the distance of a hundred yards, I have often taken the one for the other. This resemblance, however, extends no farther than to the general appearance—the shape and colour. In most other respects they differ, as you may imagine, very materially.
“Talking of turkey-buzzards,” continued Lucien, “reminds me of an anecdote that is told in relation to one.”
“Oh! let us have it, brother,” said François.