For the credit of my own sex I was pleased to notice that it was the father-bird who manifested the deepest concern and the readiest wit, not to say the greatest courage; but I am obliged in candor to acknowledge that this feature of the case surprised me not a little.

In what language shall I speak of the song of these familiar myrtle warblers, so that my praise may correspond in some degree with the gracious and beautiful simplicity of the strain itself? For music to be heard constantly, right under one's window, it could scarcely be improved; sweet, brief, and remarkably unobtrusive, without sharpness or emphasis; a trill not altogether unlike the pine-creeping warbler's, but less matter-of-fact and business-like. I used to listen to it before I rose in the morning, and it was to be heard at intervals all day long. Occasionally it was given in an absent-minded, meditative way, in a kind of half-voice, as if the happy creature had no thought of what he was doing. Then it was at its best, but one needed to be near the singer.

In a clearing back of the hotel, but surrounded by the forest, were always a goodly company of birds, among the rest a family of yellow-bellied woodpeckers; and in a second similar place were white-throated sparrows, Maryland yellow-throats, and chestnut-sided warblers, the last two feeding their young. Immature warblers are a puzzling set. The birds themselves have no difficulty, I suppose; but seeing young and old together, and noting how unlike they are, I have before now been reminded of Launcelot Gobbo's saying, "It is a wise father that knows his own child."

While traversing the woods between these two clearings I saw, as I thought, a chimney swift fly out of the top of a tree which had been broken off at a height of twenty-five or thirty feet. I stopped, and pretty soon the thing was repeated; but even then I was not quick enough to be certain whether the bird really came from the stump or only out of the forest behind it. Accordingly, after sounding the trunk to make sure it was hollow, I sat down in a clump of raspberry bushes, where I should be sufficiently concealed, and awaited further developments. I waited and waited, while the mosquitoes, seeing how sheltered I was from the breeze, gathered about my head in swarms. A winter wren at my elbow struck up to sing, going over and over with his exquisite tune; and a scarlet tanager, also, not far off, did what he could—which was somewhat less than the wren's—to relieve the tedium of my situation. Finally, when my patience was well-nigh exhausted,—for the afternoon was wearing away and I had some distance to walk,—a swift flew past me from behind, and, with none of that poising over the entrance such as is commonly seen when a swift goes down a chimney, went straight into the trunk. In half a minute or less he reappeared without a sound, and was out of sight in a second. Then I picked up my rubber coat, and with a blessing on the wren and the tanager, and a malediction on the mosquitoes (so unjust does self-interest make us), started homeward.

Conservatives and radicals! Even the swifts, it seems, are divided into these two classes. "Hollow trees were good enough for our fathers; who are we that we should assume to know more than all the generations before us? To change is not of necessity to make progress. Let those who will, take up with smoky chimneys; for our part we prefer the old way."

Thus far the conservatives; but now comes the party of modern ideas. "All that is very well," say they. "Our ancestors were worthy folk enough; they did the best they could in their time. But the world moves, and wise birds will move with it. Why should we make a fetish out of some dead forefather's example? We are alive now. To refuse to take advantage of increased light and improved conditions may look like filial piety in the eyes of some: to us such conduct appears nothing better than a distrust of the Divine Providence, a subtle form of atheism. What are chimneys for, pray? And as for soot and smoke, we were made to live in them. Otherwise, let some of our opponents be kind enough to explain why we were created with black feathers."

So, in brief, the discussion runs; with the usual result, no doubt, that each side convinces itself.

We may assume, however, that these old-school and new-school swifts do not carry their disagreement so far as actually to refuse to hold fellowship with one another. Conscience is but imperfectly developed in birds, as yet, and they can hardly feel each other's sins and errors of belief (if indeed these things be two, and not one) quite so keenly as men are accustomed to do.

After all, it is something to be grateful for, this diversity of habit. We could not spare the swifts from our villages, and it would be too bad to lose them out of the Northern forests. May they live and thrive, both parties of them.

I am glad, also, for the obscurity which attends their annual coming and going. Whether they hibernate or migrate, the secret is their own; and for my part, I wish them the wit to keep it. In this age, when the world is in such danger of becoming omniscient before the time, it is good to have here and there a mystery in reserve. Though it be only a little one, we may well cherish it as a treasure.