Thoughts of this kind come to me as I recall an exhilarating half-hour of our recent stay in Franconia. It was on the first morning, immediately after breakfast. We were barely out of the hotel yard before we turned into a bit of larch and alder swamp by the shore of Gale River. We could do nothing else. The air was full of chirps and twitters, while the swaying, feathery tops of the larches were alive with flocks of whispering waxwings, the greater part of them birds of the present year, still wearing the stripes which in the case of so many species are marks of juvenility. If individual animals still pass through a development answering to that which the race as a whole has undergone--if young animals, in other words, resemble their remote ancestors--then the evolution of birds’ plumage must have gone pretty steadily in the direction of plainness. Robins, we must believe, once had spotted breasts, as most of their more immediate relatives have to this day, and chipping sparrows and white-throats were streaked like our present song sparrows and baywings. If the world lasts long enough (who knows?) all birds may become monochromatic. Wing-bars and all such convenient marks of distinction will have vanished. Then, surely, amateurish ornithologists will have their hands full to name all the birds without a gun. Then if, by any miraculous chance, a copy of some nineteenth century manual of ornithology shall be discovered, and some great linguist shall succeed in translating it, what a book of riddles it will prove! Savants will form theories without number concerning it, settling down, perhaps, after a thousand years of controversy, upon the belief that the author of the ancient work was a man afflicted with color blindness. If not, how came he to describe the scarlet tanager as having black wings and tail, and the brown thrasher a streaked breast? These are afterthoughts. At the moment we were busy, eyes and ears, taking a census of the swamp. Besides the waxwings, which were much the most numerous, as well as the most in sight--“tree-toppers,” one of my word-making friends calls them--there were robins, song sparrows, white-throats, field sparrows, goldfinches, myrtle warblers, a Maryland yellow-throat, a black-throated green, a Nashville warbler, a Philadelphia vireo, two or three solitary vireos, one or more catbirds, as many olive-backed thrushes, a white-breasted nuthatch, and a sapsucker. Others, in all likelihood, escaped us. In and out among the bushes we made our way, one calling to the other softly at each new development. “What was that?” said I. “Wasn’t that a bobolink?” “It sounded like it,” answered the other listener. “But it can’t be. Hark!”