A History of North American Birds, Land Birds. Volume 1. Robert Ridgway. Читать онлайн. Newlib. NEWLIB.NET

Автор: Robert Ridgway
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the concealed portion of the quills otherwise is dark brown. The median and greater wing-coverts become blackish-brown towards the end, followed by white, producing two conspicuous bands. The tail-feathers are all rufous, the external ones obscurely tipped with whitish; the shafts of the same color with the vanes. Length, 11.15; wing, 4.15; tail, 5.20; tarsus, 1.30.

      Hab. Eastern North America to Missouri River, and perhaps to high central plains United States, east of Rocky Mountains, north to Lake Winnipeg.

      As stated in “Birds of North America” some specimens (var. longicauda) from beyond the Missouri River are larger than eastern birds, with longer tails, more rufous beneath; the breast spots darker. But, in passing from east to west, the change is so insensible that it is impossible to divide the series.

      Habits. This Thrush is a common species throughout a widely extended area, from the Rocky Mountains to the Atlantic, and from the Red River country, in British America, to the Rio Grande. And nearly throughout this entire territory it also resides and breeds, from Texas to the 54th parallel of latitude.

      It reaches New England early in May and leaves it in the latter part of September or the first week of October, its stay varying with the season and the supply of its food. It is somewhat irregularly distributed, common in some portions of this section, and rare or even unknown in others. It is not found near the sea-coast beyond Massachusetts. It passes the winter in the Southern States, even as far to the north as Virginia, and is in full song in the neighborhood of Savannah as early as the first of March.

      The song of this Thrush is one of great beauty, and is much admired by all who appreciate woodland melody of the sweetest and liveliest type. It is loud, clear, emphatic, full of variety and charm. Its notes are never imitative and cannot be mistaken by any one who is familiar with them, for those of any other bird, unless it may be some one of its western congeners. It is a very steady performer, singing for hours at a time. Its notes are given in a loud tone, and its song may often be heard to quite a distance.

      In obtaining its food the Brown Thrush is at times almost rasorial in its habits. In the early spring it scratches among the leaves of the forest for worms, coleopterous grubs, and other forms of insect food. By some it is charged with scratching up the hills of early corn, but this is not a well-founded accusation. Berries of various kinds also form a large part of its food, and among these the small fruit of our gardens must be included.

      This Thrush is a very affectionate and devoted bird, especially to its young. It is also prompt in going to the assistance of others of its species when in trouble. Whenever intruders approach their nests, especially if their young are far advanced, they manifest the deepest anxiety, sometimes even making a vigorous defence. The writer has a very distinct recollection of having encountered, together with a younger brother, an ignominious defeat, when making his first attempt to inspect the nest of one of these birds.

      The Brown Thrush is jealous of the intrusion of other birds of its own species to a too close proximity to its nesting-place, and will assert its love of seclusion by stout battles. In Louisiana the construction of the nest is commenced quite early in March; in Pennsylvania, not until May; and in the New England States in the latter part of that month. The nest is usually not more than two or three feet from the ground. It is built in a low bush, on a cluster of briers or among vines. I have known it to be placed in the interior of a heap of brushwood loosely thrown together. I have never met with the nest built upon the ground, but in Springfield, and in other dry and sandy localities, this is by no means an uncommon occurrence. These nests are frequently placed in close proximity to houses, and sometimes in the very midst of villages.

      The nest of the Thrasher is large, and roughly but strongly built. The base is usually made of coarse twigs, sticks, and ends of branches, firmly interwoven. Within this is constructed an inner nest, composed of dried leaves, strips of bark, and strong black fibrous roots. These are lined with finer roots, horse-hair, an occasional feather, etc.

      The eggs are usually four, sometimes five, and rarely six, in number. They vary both in the tints of the ground color, in those of their markings, and slightly in their shape. Their length varies from .99 to 1.12 inches, with a mean of 1.05. Their breadth ranges from .76 to .87 of an inch; mean breadth, .81. The ground color is sometimes white, marked with fine reddish-brown dots, confluent at the larger end, or forming a broad ring around the crown. In others the markings have a yellowish-brown tint. Sometimes the ground color is a light green.

Harporhynchus rufus, var. longirostris, Caban.,TEXAS THRASHER

      Orpheus longirostris, Lafr. R. Z. 1838, 55.—Ib. Mag. de Zool. 1839, Ois. pl. i. Toxostoma longirostre, Cab. Wiegm. Arch. 1847, I. 207. Mimus longirostris, Sclater, P. Z. S. 1856, 294 (Cordova). Harporhynchus longirostris, Cab. Mus. Hein. 1850, 81.—Baird, Birds N. Am. 1858, 352, pl. lii.—Ib. Rev. 44.—Sclater, P. Z. S. 1859, 339; Ib. 1864, 172 (City of Mex.); Ib. Catal. 1861, 8, No. 47.

      Sp. Char. Similar to H. rufus, the rufous of back much darker. Wings much rounded; second quill shorter than the secondaries. Exposed portion of the bill as long as the head; the lower edge decidedly decurved or concave. Above rather dark brownish-rufous; beneath pale rufous-white; streaked on the sides of the neck and body, and across the breast, with very dark brownish-black, nearly uniform throughout, much darker than in rufus. Two rather narrow white bands on the wings. The concealed portion of the quills dark brown. Length, 10.50; wing, 4.00; tail, 5.00; tarsus, 1.40.

      Hab. Eastern Mexico; north to Rio Grande, Texas. Cordova, Scl. Orizaba (temperate region), Sumichrast.

      Specimens from the Rio Grande to Mirador and Orizaba are quite identical, with, of course, differences among individuals. This “species” is not, in our opinion, separable from the H. rufus specifically; but is a race, representing the latter in the region given above, where the rufus itself is never found. The relations of these two forms are exactly paralleled in the Thryothorus ludovicianus and T. berlandieri, the latter being nothing more than the darker Southern representation of the former.

      The Texas Thrasher appears to belong only to the Avifauna of the Southwest. It first appears as a bird of the valley of the Rio Grande, and extends from thence southward through Eastern Mexico to Cordova and Orizaba. In Arizona it is replaced by H. palmeri, H. lecontei, and H. crissalis, in California by H. redivivus, and at Cape St. Lucas by H. cinereus, while in the United States east of the Rocky Mountains it is represented by its nearer ally H. rufus.

      Habits. The eggs of this species are hardly distinguishable from those of the common Brown Thrasher (H. rufus), of the Atlantic States. The color of their ground is a greenish-white, which is thickly, and usually completely, covered with fine markings of a yellowish-brown. They have an average length of 1.13 inches, by .79 in breadth. So far as I have had an opportunity of observing, they do not vary from these measurements more than two per cent in length or one per cent in breadth. Their nests are usually a mere platform of small sticks or coarse stems, with little or no depression or rim, and are placed in low bushes, usually above the upper branches.

      In regard to the distinctive habits of this species I have no information.

Harporhynchus cinereus, XantusCAPE ST. LUCAS THRASHER

      Harporhynchus cinereus, Xantus, Pr. A. N. Sc. 1859, 298.—Baird, Ib., 303; Review, 46.—Sclater, Catal. 1861, 8, No. 49.—Elliot, Illust., I. pl. i.—Cooper, Birds Cal. 1, 19.

      Sp. Char. Bill as long as the head; all the lateral outlines gently decurved from the base. Bristles not very conspicuous, but reaching to the nostrils. Wings considerably shorter than the tail, much rounded. First primary broad, nearly half the length of the second; the third to the seventh quills nearly equal, their tips forming the outline of a gentle curve; the second quill shorter than the ninth. Tail considerably graduated, the lateral feathers more than an inch the shorter. Legs stout; tarsi longer than middle toe, distinctly scutellate, with seven scales.

      Above ashy brown, with perhaps a tinge of rusty on the rump; beneath fulvous-white, more fulvous on the flanks, inside of wing, and crissum. Beneath, except chin, throat, and from middle of abdomen to crissum, with well-defined V-shaped spots of dark brown at the ends of the feathers, largest