A History of North American Birds, Land Birds. Volume 1. Robert Ridgway

Чтение книги онлайн.

СКАЧАТЬ 263.—Wils. Am. Orn. II, 1810, 105, pl. XV.—Aud. Orn. Biog. II, 1834, pl. cxxv.—Ib. Birds Am. IV, pl. ccxlix.—Reich. Handb. 1853, 153, tab. dxiv, figs. 3567, 3568.—Baird, Birds N. Am. 1858, 377; Review, 88.—Sclater, Catal. 1861, 15.

      Sp. Char. Above ashy-blue; top of head and upper part of neck rather light hair-brown, divided on the nape by white. Eye involved in the brown, which is deeper on the lower border. Beneath muddy-whitish; sides and behind paler than the back. Middle tail-feathers almost entirely like the back. Length of female, 4 inches; wing, 2.50.

      Hab. South Atlantic and Gulf States. Ohio! Kirtland.

      Habits. The Brown-headed Nuthatch has a much more restricted distribution than the other members of this family in this country. The specimens in the Smithsonian Museum are chiefly from Georgia. Wilson met with it in Virginia, and states that it is found in the other Southern States. I have received its eggs from Cheraw, S. C., and from Florida.

      Wilson’s description of its habits makes them almost identical with those of Sitta canadensis, while its notes are more shrill and chirping. Like that bird, it is very fond of the seeds of the pines. Wherever found, it is a constant resident, and does not migrate.

      Audubon states that this bird never goes farther north than Maryland, and that it is the most abundant in Florida, Georgia, and the Carolinas. In Louisiana it is rare, and it is not found in Kentucky. Its notes, he states, are several octaves higher than those of the carolinensis, and more shrill, and at least an octave and a half higher than those of the canadensis.

      Although apparently preferring pines and pine barrens, it by no means confines itself to them, but is not unfrequently seen on low trees and fences, mounting, descending, and turning in every direction, and with so much quickness of motion as to render it difficult to shoot it. It examines every hole and every crevice in the bark of trees, as well as their leaves and twigs, among which it finds abundance of food at all seasons. During the breeding-season they go about in pairs and are very noisy. Their only note is a monotonous cry, described as resembling dĕnd, dĕnd. Mr. Audubon further states that when the first brood leaves the nest, the young birds keep together, moving from tree to tree with all the activity of their parents, who join them when the second brood is able to keep them company. In Florida they pair in the beginning of February, having eggs as early as the middle of that month. In South Carolina they breed one month later. Their nest is usually excavated by the birds themselves in the dead portion of a low stump or sapling, sometimes only a few feet from the ground, but not unfrequently at the height of thirty or forty feet. Both birds are said to work in concert with great earnestness for several days, until the hole, which is round, and not larger at the entrance than the body of the bird, is dug ten or twelve inches deep, widening at the bottom. The eggs, according to Mr. Audubon, are laid on the bare wood. This, however, is probably not their constant habit. The eggs, from four to six in number, and not much larger than those of the Humming-Bird, have a white ground, thickly sprinkled with fine reddish-brown dots. They are said to raise two, and even three, broods in a season. According to the observations of the late Dr. Gerhardt of Northern Georgia, the Brown-headed Nuthatch breeds in that part of the country about the 19th of April.

      The eggs of this Nuthatch are of a rounded oval shape, measuring .60 by .50 of an inch. Their white ground-color is so completely overlaid by a profusion of fine dottings of a dark purplish-brown as to be entirely concealed, and the egg appears almost as if a uniform chocolate or brown color.

      Family CERTHIADÆ.—The Creepers

Char. Primaries ten; first very short; less than half the second. Tail long, wedge-shaped, the feathers stiffened and acute. Bill slender, much compressed and curved. Outer lateral toe much longest; hind toe exceeding both the middle toe and the tarsus, which is scutellate anteriorly and very short. Entire basal joint of middle toe united to the lateral.

Genus CERTHIA, Linn

      Certhia, Linnæus, Syst. Nat. ed. 10th, 1758, 112. (Type, C. familiaris.) (See Reichenbach, Handbuch, I, II, 1853, 256, for a monograph of the genus.)

      Certhia americana.

      827 ♂

      Gen. Char. Plumage soft and loose. Bill as long as head, not notched, compressed; all its lateral outlines decurved. Nostrils not overhung by feathers, linear, with an incumbent thickened scale, as in Troglodytes. No rictal bristles, and the loral and frontal feathers smooth, without bristly shafts. Tarsus scutellate anteriorly, shorter than middle toe, which again is shorter than hind toe. All claws very long, much curved and compressed; outer lateral toe much the longer; basal joint of middle toe entirely adherent to adjacent ones. Wings rather pointed, about equal to the tail, the feathers of which are much pointed, with stiffened shafts. Primaries ten; first less than half the second. Nest in holes of trees; eggs white, sprinkled with reddish.

      Certhia americana.

      Of the Certhiadæ but one genus belongs to America,—Certhia, with its one small species of considerable variability with locality. The characters above given include both family and generic characters, derived from this one genus. This is readily distinguished by the decurved, compressed bill; absence of notch and bristles; exposed linear nostrils with incumbent scales; connate middle toe, very long claws, short tarsi, pointed and stiffened tail-feathers, etc.

      The American and European varieties (they can scarcely be called species) resemble each other very closely, though they appear to be distinguished by such differences as the following:—

      The two European races, C. familiaris and C. costæ, both differ from all the American varieties in having the crissum scarcely tinged with yellowish. C. familiaris is more ashy beneath than any others, and C. costæ is purest white beneath of all. Nearest C. familiaris, in the American series, as regards tints of the upper parts, are the Pacific coast specimens of C. americana,—while the latter are most like the Atlantic region specimens of the same. C. mexicana is to be compared only with the North American forms, though it is the only one approaching familiaris in the ashy lower parts.

      C. familiaris is at once separated from the rest by having the tail shorter than the wing.

      C. costæ is almost precisely like Eastern specimens of C. americana in colors, but is absolutely pure white below, and without the distinctly yellowish crissum of the American bird. The bill and claws, however, are considerably longer than in Eastern americana, though their size is almost equalled by those of Western specimens; the colors are, however, more decidedly different.

      There is never any deviation from the generic pattern of coloration; but the variation, among individuals of each form, in length of the bill and claws, as well as the tail, is remarkable.

Certhia familiaris, var. americana, BonapBROWN CREEPER

      Certhia fusca, Barton, Fragments of the Natural History of Pennsylvania, 1799, II. Certhia familiaris, Vieill. Ois. Am. Sept. II, 1807, 70 (not the European bird); also of Wilson and Audubon.—Maynard, Birds E. Mass. 1870, 93. Certhia americana, Bonap. Comp. List. 1838.—Reich. Handb. I, 1853, 265, pl. dcxv, figs. 4102, 4103.—Baird, Birds N. Am. 1858, 372; Review, 89.—Max. Cab. Jour. 1858, 105.—Cooper & Suckley, P. R. R. Rep. XII, II, 1859, 192.—Hamlin, Pr. Bost. Soc. N. H. 1864—66, 80. Certhia mexicana, Cooper, Orn. Cal. 1, 1870, 58.

      Sp. Char. Bill about the length of the head. Above dark brown, with a slightly rufous shade, each feather streaked centrally, but not abruptly, with whitish; rump rusty. Beneath almost silky-white; the under tail-coverts СКАЧАТЬ