When the men—saturated with slaughter, and white with ordure—have retired beyond the borders of the roost to rest themselves for the night, their ground is occupied by the prowling wolf and the fox; the racoon and the cougar; the lynx and the great black bear.
With so many enemies, one would think that the “passengers” would soon be exterminated. Not so. They are too prolific for that. Indeed, were it not for these enemies, they themselves would perish for want of food. Fancy what it takes to feed them! The flock seen by Wilson would require eighteen million bushels of grain every day!—and it, most likely, was only one of many such that at the time were traversing the vast continent of America. Upon what do they feed? it will be asked. Upon the fruits of the great forest—upon the acorns, the nuts of the beech, upon buck-wheat, and Indian corn; upon many species of berries, such as the huckleberry (whortleberry), the hackberry (Celtis crassifolia), and the fruit of the holly. In the northern regions, where these are scarce, the berries of the juniper tree (Juniperus communis) form the principal food. On the other hand, among the southern plantations, they devour greedily the rice, as well as the nuts of the chestnut-tree and several species of oaks. But their staple food is the beech-nut, or “mast,” as it is called. Of this the pigeons are fond, and fortunately it exists in great plenty. In the forests of Western America there are vast tracts covered almost entirely with the beech-tree.
As already stated, these beechen forests of America remain almost intact, and so long as they shower down their millions of bushels of “mast,” so long will the passenger-pigeons flutter in countless numbers amidst their branches.
Their migration is semi-annual; but unlike most other migratory birds, it is far from being regular. Their flight is, in fact, not a periodical migration, but a sort of nomadic existence—food being the object which keeps them in motion and directs their course. The scarcity in one part determines their movement to another. When there is more than the usual fall of snow in the northern regions, vast flocks make their appearance in the middle States, as in Ohio and Kentucky. This may in some measure account for the overcrowded “roosts” which have been occasionally seen, but which are by no means common. You may live in the west for many years without witnessing a scene such as those described by Wilson and Audubon, though once or twice every year you may see pigeons enough to astonish you.
It must not be imagined that the wild pigeons of America are so “tame” as they have been sometimes represented. That is their character only while young at the breeding-places, or at the great roosts when confused by crowding upon each other, and mystified by torch-light.
Far different are they when wandering through the open woods in search of food. It is then both difficult to approach and hard to kill them. Odd birds you may easily reach; you may see them perched upon the branches on all sides of you, and within shot-range; but the thick of the flock, somehow or other, always keeps from one to two hundred yards off. The sportsman cannot bring himself to fire at single birds. No. There is a tree near at hand literally black with pigeons. Its branches creak under the weight. What a fine havoc he will make if he can but get near enough! But that is the difficulty; there is no cover, and he must approach as he best can without it. He continues to advance; the birds sit silent, watching his movements. He treads lightly and with caution; he inwardly anathematises the dead leaves and twigs that make a loud rustling under his feet. The birds appear restless; several stretch out their necks as if to spring off.
At length he deems himself fairly within range, and raises his gun to take aim; but this is a signal for the shy game, and before he can draw trigger they are off to another tree!
Some stragglers still remain; and at them he levels his piece and fires. The shot is a random one; for our sportsman, having failed to “cover” the flock, has become irritated and careless, and in all such cases the pigeons fly off with the loss of a few feathers.
The gun is reloaded, and our amateur hunter, seeing the thick flock upon another tree, again endeavours to approach it, but with like success.