Nests and Eggs of Birds of the United States. Thomas G. Gentry
thus seemingly frittered away, by the perseverance and diligence with which they ransack the orchards and groves for a suitable tree in which to excavate a nest.
The selection of a site is a matter of no little importance, the greater part of a week being consumed in making the necessary reconnoissances. These explorations commence early in the morning, and continue with but few interruptions until the close of the day. They are never performed singly, but always in pairs. One feature thereof strikes us as peculiarly interesting, and as deserving of mention. It is the perfect harmony and good-will which then prevail.
If a situation is discovered by one of the parties which is apparently suitable, a conference is called, and the various advantages thereof discussed. If mutually agreeable, further examinations cease, and building operations are begun. In cultivated grounds, a decayed branch of the apple or cherry is chosen for this purpose; but in more retired situations, the maple, ash, elm or tulip-tree is given the preference.
In the Southern States, nest-building commences about the middle of April; in the Middle Atlantic, seldom later than the fifteenth of May; in New England, from the fifteenth of May to the tenth of June; and in the extreme northerly portions of its habitat, about the fifteenth of the latter month.
All things being in readiness, the male is the first to commence operations. Stationing himself upon the spot which is to constitute the doorway to his home, with claws imbedded in the wood to prevent from falling, he digs the bark away in the form of a semi-circle. Then reversing his position, he goes through the same difficult but trying task, his little bill his only implement of execution, until he has wrought a perfect circle. Continuing the labor, he delves away into the soft or hardened interior, like a veritable Trojan, until an inch or more of the wood has yielded to the blows of his small but powerful chisel. Tired, at last, he resigns the work to his companion, and settles himself upon a branch close-by to rest. Having recuperated his exhausted energies, he starts off in quest of food, but to return in the course of a half-hour to the relief of the female. Thus the work goes on, day after day, with an industry and patience truly commendable, until success crowns the undertaking.
The opening to the chamber is perfectly circular, and quite as accurate as a skilful mechanic could make it with compasses. The cavity is first directed downwards at an angle of forty degrees, for the space of five inches, when it takes a perdendicular course for nearly ten inches further, widening perceptibly at the bottom. Such is the capacity of the latter that the sitting-bird is able to turn around therein with considerable ease, but the external orifice is just large enough to admit the bodies of herself and partner.
Few species are more careful to direct attention from the scene of their labors than the subjects of our sketch. The chips produced during the work of excavation are usually carried to some distance, so as to remove all traces that might lead to detection. But howsoever clandestinely they may act, and whatever precaution they may exercise, their home does not always escape the keen eye of the experienced oologist, or the sharpness and sagacity of the mischievous and insinuating little House Wren—one of the most annoying enemies with which it has to contend.
Wilson gives an interesting account of the impudent coolness of this bird, who coveting the neatly built home of this Woodpecker, and powerless to construct such an apartment for herself, waits until the Wookpeckers have finished their work, when she attacks them with violence, and expels them from the nest which they have prepared with so much pains. Another example is mentioned by the same distinguished authority. In this instance, the Woodpeckers had commenced the work of excavation in a cherry-tree, within a few yards of the house in which he lived, and had made considerable progress, when they were assailed by the Wrens, and compelled to withdraw. They then began a second nest in a pear-tree, a few yards off' when after digging out a most complete chamber, and laying one egg, they were once more attacked by the same impertinent intruder, and finally forced to desert the place.
Having constructed their home, which is usually the work of a week, the female, after a day of recreation and rest, begins the labor of oviposition.
This continues for four or six days, the time being regulated by the number of eggs which is to constitute a setting, but a single egg being deposited daily. Incubation now follows, and is the exclusive task of the female for nearly twelve days. The male, although he takes no direct part in this business, is an important factor in the successful accomplishment of the undertaking, as he, like an affectionate and dutiful husband, supplies her with the necessary food. When not thus occupied, he may be seen foraging the fields and woods, or perched upon a twig in the calm enjoyment of ease and sober thought, He is seldom to be observed in the immediate vicinity of the nest, save when carrying food to his mate, or in times of great calamity. It has been affirmed by Mr. Paine, of Randolph, Vermont, that the male occasionally constructs a hole for himself close-by that of his mate, as he has taken males in such apartments which were always unoccupied by eggs. He thinks that they repair thither for shelter. Careful explorations for several years have failed to show us that any such protection is practised in the Middle States, nor do we find any record to substantiate this statement.
The young, when first hatched, are very helpless creatures, and require the greatest care and attention from parental hands, so to speak. Caterpillars, small moths, aphides and beetles constitute the bulk of their fare, from the time they leave the egg until they are four weeks old, when they quit the nest, to be instructed in the ways of the outside world. For a fortnight the young birds rove in company, but finally separate, each bird leading the life of a recluse.
The eggs of this species are nearly spherical, of a crystalline whiteness, and measure .82 of an inch in length, and .71 in width. Specimens from Eastern Texas and Southern Michigan differ but little, if any, from others obtainable in New England and the Middle sections of our country. In the Plate the eggs are shown in position, the wood being cut away over the bottom of the chamber, to produce this result. The egg in front, as well as the birds upon the branch, are three-fourths of the natural size. The remaining eggs are in part concealed, and do not show so fully. In the southern and middle portions of the range of this Woodpecker, two broods are annually raised, one in June, and the other in August, but further north seldom more than one.
Original Size
Plate X.—VIREOSYLVIA OLIVACEUS, Bonaparte.—Red-eyed Vireo.
The Red-eyed Vireo is quite an abundant species throughout Eastern North America, ranging from Florida in a northeasterly direction to Nova Scotia, thence northwesterly to Lake Winnipeg and Washington Territory, and westerly to Ogden, Utah. Accidental specimens have been procured in Greenland and England, but never more than a single individual in each locality.
Many of these birds winter in Florida, and as specimens have been met with in Central America, Cuba, Trinidad, and on the Isthmus of Panama, it is highly probable that many betake themselves thither when the period of breeding is over in their northern homes.
Early in March the latter enter the United States, possibly by way of Texas and Florida, and wend their movements northward, reaching the Middle States late in April; the New England, about the middle of May; and the extreme northwest, a fortnight later.
Like all of its peculiar and characteristic genus, this species affects a fondness for forests, or the summits of tall trees, but seldom ventures upon the ground. It is, however, not wholly sylvan. At times it may be found around dwellings, or along the shaded streets of rural towns, in quest of the various insects which contribute to its sustenance.
As it gleans among the tree-tops, the simple, pleasing and musical notes of the male may be heard at somewhat regular intervals. So unsuspicious and familiar is he then, that passers-by may come and go, and their presence be unheeded.
During the hot and sultry hours of noon when other songsters have ceased