Music and Dancing in Nature. 275
effect on the ear similar to that which rain does on the sight, when the sun shines on and lightens up the myriads of falling drops all falling one way. In this manner the birds sing for hours, without intermission, every day. Then the passion of love infects them; the pleasant choir breaks up, and its ten thousand members scatter wide over the surrounding fields and pasture lands. During courtship the male has a feeble, sketchy music, but his singing is then accompanied with very charming love antics. His circlings about the hen-bird; his numberless advances and retreats, and little soarings above her when his voice swells with importunate passion; his fluttering lapses back to earth, where he lies prone with outspread, tremulous wings, a suppliant at her feet, his languishing voice meanwhile dying down to lispings--all these apt and graceful motions seem to express the very sickness of the heart. But the melody during this emotional period is nothing. After the business of pairing and nest-building is over, his musical displays take a new and finer form. He sits perched on a stalk above the grass, and at intervals soars up forty or fifty yards high; rising, he utters a series of long melodious notes; then he descends in a graceful spiral, the set of the motionless wings giving him the appearance of a slowly-falling parachute; the voice then also falls, the notes coming lower, sweeter, and more expressive until he reaches the surface. After alighting the song continues, the strains becoming longer, thinner, and clearer, until they dwindle to the finest threads of sound and faintest tinklings, as from a cithern touched by fairy fingers. The great charm of the
276 The Naturalist in La Plata.
song is in this slow gradation from the somewhat throaty notes emitted by the bird when ascendino-to the excessively attenuated sounds at the close.
In conclusion of this part I shall speak of one species more--the white-banded mocking-bird of Patagonia, which greatly excels all other songsters known to me in the copiousness, variety and brilliant character of its music. Concealed in the foliage this bird will sing by the half-hour, reproducing with miraculous fidelity the more or less melodious set songs of a score of species--a strange and beautiful performance; but wonderful as it seems while it lasts, one almost ceases to admire this mimicking bird-art when the mocker, as if to show by contrast his unapproachable superiority, bursts into his own divine song, uttered with a power, abandon and joyousness resembling, but greatly exceeding, that of the skylark "singing at heaven's gate;" the notes issuing in a continuous torrent; the voice so brilliant and infinitely varied, that if "rivalry and emulation" have as large a place in feathered breasts as some imagine all that hear this surpassing melody might well languish ever after in silent despair.
In a vast majority of the finest musical performances the same notes are uttered in the same order, and after an interval the song is repeated without any variation: and it seems impossible that we could in any other way have such beautiful contrasts and harmonious lights and shades--the whole song, so to speak, like a "melody sweetly played in tune." This seeming impossibility is accomplished in the mocking-bird's song: the notes never come in the
Music and Dancins in Nature.