Nests and Eggs of Birds of The United States. Gentry Thomas George

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СКАЧАТЬ of intermission, for a period of thirteen or fourteen days, when her labors are repaid by the appearance of a nest-full of tiny fledglings. While she is thus occupied, the male acts the part of a dutiful and faithful husband, guarding her from danger, and supplying her with the choicest and most savory articles of food. When not foraging, he may be seen upon the topmost bough of the tree upon which the nest is placed, directly above his mate, on the constant lookout for danger. Should an enemy approach, he immediately gives vent to his displeasure by a few shrill twitterings, elevates his crest, and then gives chase to the intruder, whom he pursues for a considerable distance, all the while darting at him from different positions, and inflicting the severest punishment, in order to teach him the folly of trespassing. Owls, Eagles, Crows, Grakles, Jays, and even the common barnyard Hen, are made to feel the force of his vengeance; but his most implacable enemy is the Purple Martin.

      The young are objects of more than ordinary parental solicitude. The most endearing attentions are lavished upon them, and no efforts are spared to render them comfortable and happy. Caterpillars, flies, and other equally tender insects, are brought in great quantities, during the first few days of their existence, to satisfy the demands of their greedy appetites; but as they become larger, beetles and grasshoppers are added to their dietary. When fourteen days old, they quit the nest, but still remain under home influences for a fortnight later, when they are allowed to shift for themselves.

      In many particulars the eggs of this species resemble those of the Arkansas Flycatcher, but differ mainly in their somewhat larger size, and more pointed form. They are oval in shape, white in ground-color – except when fresh, when they show a roseate tinge – and beautifully spotted with brown and reddish-brown blotches and markings, which are confluent about the larger extremity in some, and irregularly scattered over the surface in others. They measure from 1.02 to .87 of an inch in length, and from .75 to .72 in width. Specimens from different parts of the country have been examined, and all, without exception, bear a very close resemblance to each other, scarcely differing more than do eggs of the same clutch.

      Plate VI. – AGELAIUS PHOENICEUS, Vieillot. – Redwing Blackbird

      The Redwing Blackbird is found throughout North America, from ocean to ocean, and westward to the 57th parallel. From Texas and Florida to the plains of the Saskatchewan, wherever found, it breeds more or less abundantly.

      During the winter they congregate in large parties in Southern Virginia, the Carolinas, and all the Gulf States, especially near the sea-coast and among old fields of rice and grain. Occasionally, small flocks are found during the same season about stables and hay-stacks, in the vicinity of Vancouver. But in the Eastern, Middle, Western and Central sections, they are chiefly migrants.

      Early in March these large assemblies break up, a part separating in pairs and remaining among the Southern swamps, while the greater portion, the males leading the way, direct their movements northward. Later in April they have re-established themselves in their favorite and accustomed haunts.

      On their arrival, the males consort together in high open fields, where their songs may be heard, at regular intervals, from morning until night. At this time they are rather suspicious, and can be approached only by the exercise of great caution. But when the females make their appearance, their attention becomes so absorbed, that they are apparently oblivious of events transpiring around them. The presence of the latter is the signal for redoubled vigor in the line of music. From bush and tree, from ground and fence-rail, and from almost every available place, in loud, clear and resonant notes, is heard their strange, unmistakable melody, each bird striving to outsing his companions. Ever and anon a half-dozen voices may be heard at the same time, producing a perfect medley of sounds, enough to "split the ears of the very groundlings." The males seem never to weary of singing. It is a remarkable and well-authenticated fact, that during the breeding-period, and even late in September when preparing to migrate, the same sweet but pensive strains are heard.

      Nearly three weeks have expired since the advent of the Redwing, and still the sexes remain unmated. This cannot long continue. Already a change is manifest. The males are more musical, while, on the other hand, a spirit of restlessness pervades the females. The latter are now no longer given to feeding as before, but cease from their labors, and bend listening ears to the gushing notes of love which swell around. Enraptured, impressed, they eventually emerge from their hiding-places, select their partners, and hie away to more congenial scenes.

      The period of mating is unusually short, and unmarked by any special peculiarities. It generally occurs about the 20th of April, but seldom later than the beginning of May. The chief concern of the newly-wedded pair now seems to be the selection of a building-spot. This is a matter of importance, and, with most species, is attended with considerable difficulty. Not so in the present instance. The birds repair to accustomed sites, and there, amid the small bushes and tussocks which abound, prepare their houses.

      Nest-making commences in the Middle Atlantic States between the 25th of April and the 1st of May; in New England, about the 1st of June, but not before the middle of this month, in more northern regions. The nest is usually placed in a cluster of reeds, or in the tops of small bushes alongside of streams of water. Occasionally, small trees and fields of timothy are made the recipients of these marks of attention, and, in rare instances, the bare ground is made subservient to this purpose. Almost every ornithologist who has paid any attention to field-work has observed nests in their ordinary positions upon small hushes, or in bunches of swamp grass, but few, we opine, have met with them elsewhere. Mr. Maynard, as stated by Dr. Brewer, seems to have been the first to notice this change. While exploring an island in the marshes of Essex River, he found a number of nests in trees at an elevation of twenty feet from the ground. One of these structures, which was purse-shaped, was composed entirely of eel grass, and placed upon a sapling, at a height of fourteen feet.

      High grounds are seldom chosen for nidificating purposes, for the obvious reason that they offer poor facilities for food-collection; the aquatic larvæ, may-flies, dragon-flies, and mosquitoes, which constitute a conspicuous part of the diet of these birds, being only found in marshy situations. Even here a preference is manifested for certain positions. Small bushes along the borders of streams, from the two-fold advantages which they possess, are almost wholly adopted in some localities. Being convenient to appropriate food-stuffs, they are placed beyond the reach of snakes, particularly water snakes, which have a decided partiality for young birds.

      Having selected a building-spot, the pair proceed with all possible dispatch to construct a home. This requires the joint labor of the sexes, during the early mornings and evenings, for a period of about five days. The articles of composition are chiefly collected by the male, while the female performs the more difficult operation of putting them in position. Considerable differences are often noticeable in these structures. Those placed upon bushes are, as a general thing, more symmetrical and compact than those found in clumps of grasses, and differ still further in being-plastered with mud on the outside, which adds to their durability; while, on the other hand, nests enclosed by tall overarching grasses, have a looseness of arrangement that will scarcely bear manipulation. But where the nest is placed in fields of timothy and clover, there is evidence of great pains having been taken in its construction.

      Having finished their domicile, generally on the following day, but sometimes not for nearly a week afterwards, as is the case when mud and other damp substances have been used in building, the female begins to deposit her eggs, at the rate of one a day, until the full number of five has been laid. Incubation follows on the day of the last deposit, and continues for fifteen days. This business devolves wholly upon the female. While she is thus engaged, the male is not idle, but stands guard over the nest, or ventures off in quest of food for himself and companion. Should the nest be assailed, both parents seek, by the most piteous cries and remonstrances, to drive, off the offending party. In case of pillage, they keenly feel the injustice, and for several days bewail their misfortune. But they soon recover their usual spirits, and prepare to remedy the disaster. So tenacious are they of a chosen locality, that the same pair has been known to build as many as three nests in the СКАЧАТЬ