“The bald eagles have been much blamed for their treatment of the ospreys, but,” said Lucien, “perhaps they have more reason for levying their tax than at first appears. It has been asked: Why they do not capture the fish themselves? Now, I apprehend, that there is a natural reason why they do not. As you have seen, the fish are not always caught upon the surface. The osprey has often to plunge beneath the water in the pursuit, and Nature has gifted him with power to do so, which, if I am not mistaken, she has denied to the eagles. The latter are therefore compelled, in some measure, to depend upon the former for a supply. But the eagles sometimes do catch the fish themselves, when the water is sufficiently shallow, or when their prey comes near enough to the surface to enable them to seize it.”
“Do they ever kill the ospreys?” inquired François.
“I think not,” replied Lucien; “that would be ‘killing the goose,’ etcetera. They know the value of their tax-payers too well to get rid of them in that way. A band of ospreys, in a place where there happens to be many of them together, have been known to unite and drive the eagles off. That, I suppose, must be looked upon in the light of a successful revolution.”
The conversation was here interrupted by another incident. The ospreys had again gone out fishing, and, at this moment, one of them was seen to pounce down and take a fish from the water. It was a large fish, and, as the bird flew heavily upward, the eagle again left its perch, and gave chase. This time the osprey was overtaken before it had got two hundred yards into the air, and seeing it was no use attempting to carry off the prey, it opened its claws and let it drop. The eagle turned suddenly, poised himself a moment, and then shot after the falling fish. Before the latter had got near the ground, he overtook and secured it in his talons. Then, arresting his own flight by the sudden spread of his tail, he winged his way silently across the river, and disappeared among the trees upon the opposite side. The osprey, taking the thing as a matter of course, again descended to the proper elevation, and betook himself to his work. Perhaps he grinned a little like many another royal tax-payer, but he knew the tax had to be paid all the same, and he said nothing.
An incident soon after occurred that astonished and puzzled our party not a little. The female osprey, that all this time seemed to have had but poor success in her fishing, was now seen to descend with a rush, and plunge deeply into the wave. The spray rose in a little cloud over the spot, and all sat watching with eager eyes to witness the result. What was their astonishment when, after waiting many seconds, the bird still remained under water! Minutes passed, and still she did not come up. She came up no more! The foam she had made in her descent floated away—the bosom of the water was smooth as glass—not a ripple disturbed its surface. They could have seen the smallest object for a hundred yards or more around the spot where she had disappeared. It was impossible she could have emerged without them seeing her. Where, then, had she gone? This, as I have said, puzzled the whole party; and formed a subject of conjecture and conversation for the rest of that day, and also upon the next. Even Lucien was unable to solve the mystery. It was a point in the natural history of the osprey unknown to him. Could she have drowned herself? Had some great fish, the “gar pike,” or some such creature, got hold of and swallowed her? Had she dashed her head against a rock, or become entangled in weeds at the bottom of the river?
All these questions were put, and various solutions of the problem were offered. The true one was not thought of, until accident revealed it. It was Saturday when the incident occurred. The party, of course, remained all next day at the place. They heard almost continually the cry of the bereaved bird, who most likely knew no more than they what had become of his mate. On Monday our travellers re-embarked and continued down-stream. About a mile below, as they were paddling along, their attention was drawn to a singular object floating upon the water. They brought the canoe alongside it. It was a large fish, a sturgeon, floating dead, with a bird beside it, also dead! On turning both over, what was their astonishment to see that the talons of the bird were firmly fixed in the back of the fish! It was the female osprey! This explained all. She had struck a fish too heavy for her strength, and being unable to clear her claws again, had been drawn under the water and had perished along with her victim!