There are thousands who admire the Mocking-bird, because, after pouring forth a continued stream of ridiculous and disagreeable sounds, or a series of two or three notes repeated more than a hundred times in uninterrupted and monotonous succession, he condescends to utter a single delightfully modulated strain. He often brings his tiresome extravaganzas to a magnificent climax of melody, and just as often concludes an inimitable chant with a most contemptible bathos. But the notes of the Robin are all melodious, all delightful,—loud without vociferation, mellow without monotony, fervent without ecstasy, and combining more of mellowness of tone, plaintiveness, cheerfulness, and propriety of execution, than those of any other bird.
The Robin is the Philomel of our spring and summer mornings in New England, and in all the country north and west of these States. Without his sweet notes, the mornings would be like a vernal landscape without flowers, or a summer-evening sky without tints. He is the chief performer in the delightful anthem that welcomes the rising day. Of the others, the best are but accompaniments of more or less importance. Remove the Robin from this woodland orchestra, and it would be left without a soprano. Over all the northern parts of this continent, wherever there are any human settlements, these birds are numerous and familiar. There is probably not an orchard in all New England that is not supplied with several of these musicians. When we consider the millions thus distributed over this broad country, we can imagine the sublimity of that chorus which, from the middle of April until the last of July, must daily ascend to heaven from the voices of these birds, not one male of which is silent, on any pleasant morning, from the earliest flush of dawn until sunrise.
In my boyhood, an early morning-walk was one of my favorite recreations, and never can I forget those delightful matins that awaited me at every turn. Even then I wondered that so little admiration was expressed for the song of the Robin, who seemed to me to be worthy of the highest regard. The Robin, when reared in confinement, is one of the most affectionate and interesting of birds. His powers of song are likewise susceptible of great improvement. Though not prone to imitation, he may be taught to sing tunes, and to imitate the notes of other birds. I have heard one whistle "Over the water to Charlie" as well as it could be played with a fife. Indeed, this bird is so tractable, that I believe any well-directed efforts would never fail of teaching him to sing any simple melody.
But what do we care about his power of learning artificial music? Even if he could be taught to perform like a maestro, this would not enhance his value as a minstrel of the woods. We are concerned with the birds only as they are in a state of nature. It is the simplicity of the songs of birds, as I have before remarked, that constitutes their principal charm; and were the Robins so changed in their nature as to relinquish their native notes, and sing only tunes hereafter, we should listen to them with as much indifference as to the whistling of boys in the streets.
In the elms on Boston Common, and in all the lofty trees in the suburbs as well as in the country villages, are two little birds whose songs are heard daily and hourly, from the middle of May until the latter part of summer. These are the Warbling Fly-catchers (Vireo gilvus and V. olivaceus). The first is commonly designated as the Warbling Vireo, the second as the Red-eyed Vireo. The former arrives about a week or ten days earlier than the other, and becomes silent likewise at a somewhat earlier period. Both species are very similar in their habits, frequenting the villages in preference to the woods, singing at all hours of the day, particularly at noon, taking all their insect prey from the leaves and branches of trees, or seizing it as it flits by their perch, and amusing themselves, while thus employed, with oft-repeated fragments of song. Each builds a pensile nest, or places it in the fork of the slender branches of a tree. I have seen a nest of the Warbling Vireo placed less than fifteen feet from the ground, on a pear-tree, directly opposite the window of a chamber that was constantly occupied; but the nests of both species are usually suspended at a considerable height from the ground.
The notes of the Warbling Vireo have been described by the words, "Brigadier, Brigadier, Bridget." They are few, simple, and melodious, and being often repeated, they form a very important part of the sylvan music of cultivated and thickly-settled places. It is difficult to obtain sight of this little warbler while he is singing, on account of his small size, the olive color of his plumage, and his habit of perching among the dense foliage of the trees.
The Red-eyed Vireo is more generally known by his note, because he is particularly vocal during the heat of the long summer-days, when other birds are comparatively silent. The modulation of his notes is similar to that of the common Robin, but his tones are sharper, and he sings in a very desultory manner, leaving off very frequently in the middle of a strain to seize a moth or a beetle. Singing, while he is engaged in song, never seems to be his sole employment. This is the little bird that warbles for us late in the summer, after almost all other birds have become silent, uttering his moderate notes, as if for his own amusement, during all the heat of the day, from the trees by the roadsides and in our inclosures. We might then suppose him to be repeating very moderately the words, "Do you hear me? Do you see me?" with the rising inflection of the voice, and with a pause after each sentence, as if he waited for an answer.
As soon as the cherry-tree is in blossom, and when the oak and the maple are beginning to unfold their plaited leaves, the loud and mellow notes of the Golden Robin (Icterus Baltimore) are heard for the first time in the year. I have never known the birds of this species to arrive before this date, and they seem to be governed by the supply of their insect food, which probably becomes abundant simultaneously with the flowering of the orchards. These birds may from that time be observed diligently hunting among the branches and foliage of the trees, and they appear to make a particular examination of the blossoms, from which they obtain a great variety of flies and beetles that are lodged in them. While thus employed, the bird frequently utters his brief, but loud and melodious notes; but he sings, like the Vireo, only while attending to the wants of life. Almost all remarkable singing-birds, when warbling, give themselves up entirely to song, and pay no regard to other demands upon their time until they have concluded. But the Golden Robin never relaxes from his industry, nor remains stationed upon the branch of a tree for the sole purpose of singing. He sings, like an industrious maid-of-all-work, only while employed in the ordinary concerns of life.
The Golden Robin is said to inhabit North America from Canada to Mexico; but there is reason to believe that the species is most abundant in the north-eastern parts of the continent, and that a greater number breed in the New England States than either south or west of this section. They are also more numerous in the suburbs of cities and towns than in the ruder and more primitive parts of the country. Their peculiar manner of protecting their pensile nests, by hanging them from the extremities of the lofty branches of an elm or other tall tree, enables the bird to rear its young with great security, even in the heart of the city. The only animals that are able to reach their nests are the smaller squirrels, which sometimes descend the long, slender branches upon which they are suspended, and devour the eggs.
This depredation I have never witnessed; but I have seen the Red Squirrel descend in this manner to devour the crysalis of a certain insect, which was rolled up in a leaf.