Nature has many surprises for those who wait on her: one of the greatest she ever favored me with was the sight of a wounded Magellanic eagle-owl I shot on the Rio Negro in Patagonia. The haunt of this bird was an island in the river, overgrown with giant grasses and tall willows, leafless now, for it was in the middle of winter. Here I sought for and found him waiting on his perch for the sun to set. He eyed me so calmly when I aimed my gun, I scarcely had the heart to pull the trigger. He had reigned there so long, the feudal tyrant of that remote wilderness? Many a water-rat, stealing like a shadow along the margin between the deep stream and the giant rushes, he had snatched away to death; many a spotted wild pigeon had woke on its perch at night with his cruel crooked talons piercing its flesh; and beyond the valley on the bushy uplands many a crested tinamou had been slain on her nest and her beautiful glossy dark green eggs left to grow pale in the sun and wind, the little lives that were in them dead because of their mother’s death. But I wanted that bird badly, and hardened my heart: the “demoniacal laughter” with which he had so often answered the rushing sound of the swift black river at eventide would be heard no more. I fired: he swerved on his perch, remained suspended for a few moments, then slowly fluttered down. Behind the spot where he had fallen was a great mass of tangled dark-green grass, out of which rose the tall, slender boles of the trees; overhead through the fretwork of leafless twigs the sky was flushed with tender roseate tints, for the sun had now gone down and the surface of the earth was in shadow. There, in such a scene, and with the wintry quiet of the desert over it all, I found my victim stung by his wounds to fury and prepared for the last supreme effort. Even in repose he is a big eagle-like bird: now his appearance was quite altered, and in the dim, uncertain light he looked gigantic in size—a monster of strange form and terrible aspect. Each particular feather stood out on end, the tawny barred tail spread out like a fan, the immense tiger-colored wings wide open and rigid, so that as the bird, that had clutched the grass with his great feathered claws, swayed his body slowly from side to side—just as a snake about to strike sways its head, or as an angry watchful cat moves its tail—first the tip of one, then of the other wing touched the ground. The black horns stood erect, while in the centre of the wheel-shaped head the beak snapped incessantly, producing a sound resembling the clicking of a sewing-machine. This was a suitable setting for the pair of magnificent furious eyes, on which I gazed with a kind of fascination, not unmixed with fear when I remembered the agony of pain suffered on former occasions from sharp, crooked talons driven into me to the bone. The irides were of a bright orange color, but every time I attempted to approach the bird they kindled into great