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Swallow

SWALLOW (A. S. swalewe, Icel. svala, Du. zwaluui, Ger. Schwalbe), the bird which of all others is recognized as the harbinger of summer in the northern hemisphere. The name Hirundo ruslica of Linnaeus is now employed for the common chimney-swallow of Europe, which has been divided into four or five races. In summer it ranges all over Europe, and in Asia extends to Manchuria and China; in winter it migrates south, reaching India, Burma, the Malay Peninsula and the whole of Africa. The common swallow of North America, usually called the barn-swallow, is H. erythrogastra, but in summer it also reaches Alaska and Greenland and extends across to Lake Baikal. The winter migration extends to Burma for the Asiatic swallows and to South Brazil for those of America. In all some twenty-seven species of Hirundo are recognized, the range of the genus being practically world-wide. Returning, usually already paired, to its summer haunts, after its winter sojourn in southern lands, and generally reaching England about the first week in April, the English swallow at once repairs to its old quarters, nearly always around the abodes of men; and, about a month later, the site of the nest is chosen, resort being had in most cases to the very spot that has formerly served the same purpose the old structure, if still remaining, being restored and refurnished. So trustful is the bird that it commonly establishes itself in any of men's works that will supply the necessary accommodation, and a shed, a barn, or any building with an open roof, a chimney that affords a support for the nest, or even the room of an inhabited house if chance should give free access thereto to say nothing of extraordinary positions, may be the place of its choice. Wheresoever placed, the nest is formed of small lumps of moist earth, which, carried to the spot in the bird's bill, are duly arranged and modelled, with the aid of short straws or slender sticks, into the required shape. This is generally that of a half-saucer, but it varies according to the exigencies of the site. The materials dry quickly into a hard crust, which is lined with soft feathers, and therein are laid from four to six white eggs, blotched and speckled with grey and orange-brown deepening into black. Two broods are usually reared in the season, and the young on leaving the nest soon make their way to some leafless bough, whence they try their powers of flight, at first accompanying their parents in short excursions on the wing, receiving from them the food which they are as yet unable to capture, until able to shift for themselves. They collect in flocks, often of many hundreds, and finally leave the country about the end of August or early in September, to be followed, after a few weeks, by their progenitors. They moult their feathers in their winter quarters, and this fact affords one of the strongest arguments against the popular belief (which, curious to say, is still partly if not fully entertained by many who should know better) of their becoming torpid in winter, for a state of torpidity would suspend all animal action. 2 The chestnut forehead and throat, 1 The language was first reduced to writing by the Arabs, who still use the Arabic character. But the European missionaries have replaced this by the Roman system, which is more suited for the transliteration of most African, and especially of the Bantu, tongues.

1 See John Hunter's Essays and Observattons in Natural History, edited by Sir R. Owen in 1861 (ii. 280). An excellent bibliography of the swallow-torpidity controversy, up to 1878, is given by Professor Coues (Birds of the Colorado Valley, pp. 378-390), who seems still to hanker after the ancient faith in " hibernation."

the shining steel-blue upper plumage, and the dusky white in some cases reddening so as almost to vie with the frontal and gular patches of the lower parts are well known to every person of observation, as is the markedly forked tail, which is become proverbial of this bird.

Taking the word swallow in a more extended sense, it is used for all the*members of the family Hirundinidae,' excepting a few to which the name martin (q.v.) has been applied, and this family includes from 80 to 100 species, which have been placed in many different genera. The true swallow has very many affines, some of which range almost as widely as itself does, while others seem to have curiously restricted limits, and much the same may be said of several of its more distant relatives. But altogether the family forms one of the most circumscribed and therefore one of the most natural groups of Oscines, having no near allies; for, though in outward appearance and in some habits the swallows bear a considerable resemblance to swifts (q.v.), the latter belong to a different order, and are not Passerine birds at all, as their structure, both internal and external, proves. It has been sometimes stated that the Hirundinidae have their nearest relations in the flycatchers (<?.!>.) ; but the assertion is very questionable, and the supposition that they are allied to the Ampehdae (cf . WAXWING), though possibly better founded, has not been confirmed. An affinity to the Indian and Australian Artamus (the species of which genus are often known as wood-swallows or swallow-shrikes) has also been suggested but has not been accepted. (A. N.)

Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)

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