Their flight and manner in song is much like that of the skylark. The bird mounts up and up on ecstatic wing, till it becomes a mere speck against the sky, where it drifts to and fro, and utters at intervals its crude song, a mere fraction or rudiment of the skylark's song, a few sharp, lisping, unmelodious notes, as if the bird had a bad cold, and could only now and then make any sound,—heard a long distance, but insignificant, a mere germ of the true lark's song; as it were the first rude attempt of nature in this direction. After due trial and waiting, she develops the lark's song itself. But if the law of evolution applies to bird-songs as well as to other things, the shore lark should in time become a fine songster. I know of no bird-song that seems so obviously struggling to free itself and reach a fuller expression. As the bird seems more and more inclined to abide permanently amid cultivated fields, and to forsake the wild and savage north, let me hope that its song is also undergoing a favorable change. How conspicuous the crows in the brown fields, or against the lingering snowbanks, or in the clear sky! How still the air! One could carry a lighted candle over the hills. The light is very strong, and the effect of the wall of white mountains rising up all around from the checkered landscape, and holding up the blue dome of the sky, is strange indeed. April 14. A delicious day, warm as May. This to me is the most bewitching part of the whole year. One's relish is so keen, and the morsels are so few and so tender. How the fields of winter rye stand out! They call up visions of England. A perfect day in April far excels a perfect day in June, because it provokes and stimulates while the latter sates and cloys. Such days have all the peace and geniality of summer without any of its satiety or enervating heat. April 15. Not much cloud this morning, but much vapor in the air. A cool south wind with streaks of a pungent vegetable odor, probably from the willows. When I make too dead a set at it I miss it; but when I let my nose have its own way, and take in the air slowly, I get it, an odor as of a myriad swelling buds. The long-drawn call of the high-hole comes up from the fields, then the tender rapid trill of the bush or russet sparrow, then the piercing note of the meadowlark, a flying shaft of sound. April 21. The enchanting days continue without a break. One's senses are not large enough to take them all in. Maple buds just bursting, apple-trees full of infantile leaves. How the poplars and willows stand out! A moist, warm, brooding haze over all the earth. All day my little russet sparrow sings and trills divinely. The most prominent bird music in April is from the sparrows.