Von Bloom entertained hopes that as none appeared due north of the kraal, the swarm might pass on without extending to the borders of his farm. He knew that they usually followed the direction of the wind. Unless the wind changed they would not swerve from their course.
He continued to observe them anxiously. He saw that the selvedge of the cloud came no nearer. His hopes rose. His countenance grew brighter. The children noticed this and were glad, but said nothing. All stood silently watching.
An odd sight it was. There was not only the misty swarm of the insects to gaze upon. The air above them was filled with birds—strange birds and of many kinds. On slow, silent wing soared the brown “oricou,” the largest of Africa’s vultures; and along with him the yellow “chasse fiente,” the vulture of Kolbé. There swept the bearded “lamvanger,” on broad extended wings. There shrieked the great “Caffre eagle,” and side by side with him the short-tailed and singular “bateleur.” There, too, were hawks of different sizes and colours, and kites cutting through the air, and crows and ravens, and many species of insectivora. But far more numerous than all the rest could be seen the little springhaan-vogel, a speckled bird of nearly the size and form of a swallow. Myriads of these darkened the air above—hundreds of them continually shooting down among the insects, and soaring up again, each with a victim in its beak. “Locust-vultures” are these creatures named, though not vultures in kind. They feed exclusively on these insects, and are never seen where the locusts are not. They follow them through all their migrations, building their nests, and rearing their young, in the midst of their prey!
It was, indeed, a curious sight to look upon, that swarm of winged insects, and their numerous and varied enemies; and all stood gazing upon it with feelings of wonder. Still the living cloud approached no nearer, and the hopes of Von Bloom continued to rise.
The swarm kept extending to the south—in fact, it now stretched along the whole western horizon; and all noticed that it was gradually getting lower down—that is, its top edge was sinking in the heavens. Were the locusts passing off to the west? No.
“Da am goin’ roost for da nacht—now we’ll get ’em in bagfull,” said Swartboy, with a pleased look; for Swartboy was a regular locust-eater, as fond of them as either eagle or kite,—ay, as the “springhaan-vogel” itself.
It was as Swartboy had stated. The swarm was actually settling down on the plain.
“Can’t fly without sun,” continued the Bushman. “Too cold now. Dey go dead till da mornin.”
And so it was. The sun had set. The cool breeze weakened the wings of the insect travellers, and they were compelled to make halt for the night upon the trees, bushes, and grass.
In a few minutes the dark mist that had hid the blue rim of the sky, was seen no more; but the distant plain looked as if a fire had swept over it. It was thickly covered with the bodies of the insects, that gave it a blackened appearance, as far as the eye could reach.