There is an expression of great cheerfulness in these notes; but music, like poetry, must be somewhat plaintive in its character, to take strong hold of the feelings. I have never known a person to be affected by these notes as by those of the Wood-Sparrow. While engaged in singing, the Chewink is usually perched on the lower branch of a tree, near the edge of a wood, or on the top of a tall bush. He is a true forest-bird, and builds his nest in the thickets that conceal the boundaries of the wood.
The notes of the Chewink and his general appearance and habits are well calculated to render him conspicuous, and they cause him to be always noticed and remembered. Our birds are like our men of genius. As in the literary world there is a description of talent that must be discovered and pointed out by an observing few, before the great mass can understand it or even know its existence,—so the sweetest songsters of the wood are unknown to the mass of the community, while many very ordinary performers, whose talents are conspicuous, are universally known and admired.
As we advance into the wood, if it be near mid-day, or before the decline of the sun, the notes of two small birds will be sure to attract our attention. These notes are very similar, and as slender and piercing as the chirp of a grasshopper, being distinguished from the latter only by a different and more pleasing modulation. The birds to which I refer are the Red Start (Muscicapa ruticilla) and the Speckled Creeper (Sylvia varia). The first is the more rarely seen of the two, being a bird of the deep forest, and shunning observation by hiding himself in the most obscure parts of the wood. In general appearance, and in the color of his plumage, he bears a resemblance to the Ground-Robin, though not more than half his size. He lives entirely on insects, catching them while they are flying in the air.
His song is similar to that of the Summer Yellow-Bird, so common in our gardens among the fruit-trees, but it is more shrill and feeble. The Creeper's song does not differ from it more than the songs of different individuals of the same species may differ. This bird may be seen creeping like a Woodpecker around the branches of trees, feeding upon the grubs and insects that are lodged upon the bark. He often leaves the forest, and may be seen busily searching the trees in the orchard and garden. The restless activity of the birds of this species affords a proof of the countless myriads of insects that must be destroyed by them in the course of one season,—insects which, if not kept in check by these and other small birds, would multiply to such an extreme as to render the earth uninhabitable by man.
While listening with close attention to the slender notes of either of the last-named birds, often hardly audible amidst the din of grasshoppers, the rustling of leaves, and the sighing of winds among the tall oaken boughs, suddenly the wood resounds with a loud, shrill song, like the sharpest notes of the Canary. The bird that startles one with this vociferous note is the Oven-Bird, (Turdus aurocapillus), or Golden-Crowned Thrush. It is the smallest of the Thrushes, is confined exclusively to the wood, and when singing is particularly partial to noon-day. There is no melody in his song. He begins rather low, increasing in loudness as he proceeds, until the last notes are so loud as to seem almost in our immediate presence. He might be supposed to utter His words, I see, I see, I see, etc.,—emphasizing the first word, and repeating the words six or eight times, louder and louder with each repetition. No other bird equals this little Thrush in the emphasis with which he delivers his brief communication. His notes are associated with summer noon-days in the deep woods, and, when bursting upon the ear in the silence of noon, they disperse all melancholy thoughts, and inspire one with a vivid consciousness of life.
The most remarkable thing connected with the history of this bird is his oven-shaped nest. It is commonly placed on the ground, under a knoll of moss or a tuft of grass and bushes, and is formed almost entirely of long grass neatly woven. It is covered with a roof of the same materials, and a round opening is made at the side, for the bird's entrance. The nest is so ingeniously covered with grass and disguised with the appearance of the general surface around it, that it is very seldom discovered. The Cow-Bunting, however, is able to find it, and often selects it as a depository for its own eggs.
Those who are addicted to rambling in pursuit of natural curiosities may have observed that pine-woods are remarkable for certain collections of mosses which have cushioned a projecting rock or the decayed stump of a tree. When weary with heat and exercise, it is delightful to sit down upon one of these green velveted couches and take note of the objects immediately around us. We are then prepared to hear the least sound that invades our retreat. Some of the sweetest notes ever uttered in the wood are distinctly heard only at such times; for when we are passing over the rustling leaves, the noise made by our progress interferes with the perfect recognition of all delicate sounds. It was when thus reclining, after half a day's search for flowers, under the grateful shade of a pine-tree, now watching the white clouds that sent a brighter day-beam into these dark recesses, as they passed luminously overhead, and then noting the peculiar mapping of the grounds underneath the wood, diversified with mosses in swelling knolls, little islets of fern, and parterres of ginsengs and Solomon's-seals,—in one of these cloisters of the forest, I was first greeted by the pensive note of the Green Warbler, as he seemed to titter in supplicatory tones, very slowly modulated, "Hear me, Saint Theresa!" This strain, as I have observed many times since, is, at certain hours, repeated constantly for ten minutes at a time, and it is one of those melodious sounds that seem to belong exclusively to solitude.
The Green Warbler (Sylvia virens) is a small bird, and though his notes may be familiar to all who have been accustomed to strolling in the woods, the species is not numerous in Massachusetts, the greater number retiring farther north in the breeding-season. Nuttall remarks in reference to this bird, "His simple, rather drawling, and somewhat plaintive song, uttered at short intervals, resembled the syllables 'te dé teritscá, sometimes te derisca, pronounced pretty loud and slow, and the tones proceeded from high to low. In the intervals, he was perpetually busied in catching small cynips, and other kinds of flies,—keeping up a smart snapping of his bill, almost similar to the noise made by knocking pebbles together." There is a plaintive expression in this musical supplication, that is apparent to all who hear it, no less than if the bird were truly offering prayers to some tutelary deity. It is difficult, in many cases, to determine why a certain combination of sounds should affect one with an emotion of sadness, while another, under the same circumstances, produces a feeling of joy. This is a part of the philosophy of music which has not been explained.
While treating of the Sylvias, I must not omit to notice one of the most important of the tribe, and one with which almost everybody is acquainted,—the Maryland Yellow-Throat (Sylvia trichas). This species is quite common and familiar. He is most frequently seen in a willow-grove that borders a stream, or in the shrubbery of moist and low grounds. The angler is greeted by his notes on the rushy borders of a pond, and the botanist listens to them when hunting for those rose-plants that hide themselves under dripping rocks in some wooded ravine. The song of the Yellow-Throat resembles that of the Warbling Vireo, delivered with somewhat more precision, as if he were saying, I see you, I see you, I see you. His notes are simply lively and agreeable; there is nothing plaintive about them. The bird, however, is very attractive in his appearance, being of a bright olive-color above, with a yellow throat and breast, and a black band extending from the nostrils over the eye. This black band and the yellow throat are the marks by which he is most easily identified. The Yellow-Throat remains tuneful till near the last week in August.
But if we leave the wood while those above described are the only singing-birds we have heard, we have either returned too soon, or we did not penetrate deeply enough into the forest. The Wood-Sparrow prepared our ears for a concert more delightful than the Red Start or the Yellow-Throat are capable of presenting, and we have spent our time almost in vain, if we have not heard the song of the Wood-Thrush (Turdus melodus). His notes are not startling or conspicuous; some dull ears might not hear them, though poured forth only a few rods distant, if their attention were not directed to them. Yet they are loud, liquid, and sonorous, and they fail to attract attention only on account of the long pauses between the different strains. We must link all these strains together to enjoy the full pleasure which the song of this bird is capable of affording, though any single strain alone is sufficient to entitle the bird to considerable reputation as a songster.