A History of North American Birds, Land Birds. Volume 1. Robert Ridgway
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Название: A History of North American Birds, Land Birds. Volume 1
Автор: Robert Ridgway
Издательство: Public Domain
Жанр: Биология
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Towards each other they are affectionate and devoted, mutually assisting in the construction of the nest; and as incubation progresses the female, who rarely leaves the nest, is supplied with food, and entertained from his exhaustless vocabulary of song, by her mate. When annoyed by an intruder the cry of the Catbird is loud, harsh, and unpleasant, and is supposed to resemble the outcry of a cat, and to this it owes its name. This note it reiterates at the approach of any object of its dislike or fear.
The food of the Catbird is almost exclusively the larvæ of the larger insects. For these it searches both among the branches and the fallen leaves, as well as the furrows of newly ploughed fields and cultivated gardens. The benefit it thus confers upon the farmer and the horticulturist is very great, and can hardly be overestimated.
The Catbird can with proper painstaking be raised from the nest, and when this is successfully accomplished they become perfectly domesticated, and are very amusing pets.
They construct their nests on clusters of vines or low bushes, on the edges of small thickets, and in retired places, though almost always near cultivated ground. The usual materials of their nests are dry leaves for the base, slender strips of long dry bark, small twigs, herbaceous plants, fine roots, and finer stems. They are lined with fine dry grasses, and sedges. Their nests average 4 inches in height by 5 in diameter. The diameter and depth of the cavity are 3½ inches. The eggs are of a uniform deep bluish-green, and measure .97 in length and .69 of an inch in breadth.
Family CINCLIDÆ.—The Dippers
On page 2 will be found the characteristics of this family, which need not be here repeated. There is only a single genus, Cinclus, with four American species, and several from Europe and Asia.
Hydrobata, Vieillot, Analyse, 1816 (Ag.).—Baird, B. N. A. 229.
Cinclus, Bechstein, Gemein. Naturg. 1802. (Not of Moehring, 1752. Type Sturnus cinclus, L.)—Salvin, Ibis, 1867, 109. (Monograph.)
Cinclus mexicanus.
8117
Gen. Char. Bill without any bristles at the base; slender, subulate; the mandible bent slightly upward; the culmen slightly concave to near the tip, which is much curved and notched; the commissural edges of the bill finely nicked towards end. Feet large and strong, the toes projecting considerably beyond the tail; the claws large. Lateral toes equal. Tail very short and even; not two thirds the wings, which are concave and somewhat falcate. The first primary is more than one fourth the longest. Eggs white.
Cinclus mexicanus.
The slightly upward bend of the bill, somewhat as in Anthus, renders the culmen concave, and the commissure slightly convex. The maxilla at base is nearly as high as the mandible; the whole bill is much compressed and attenuated. The lateral claws barely reach the base of the middle one, which is broad; the inner face extended into a horny lamina, with one or two notches or pectinations somewhat as in Caprimulgidæ. The stiffened sub-falcate wings are quite remarkable. The tail is so short that the upper coverts extend nearly to its tip.
The species are all dull-colored birds, usually brown, sometimes varied with white on the head, back, or throat. They inhabit mountainous subalpine regions abounding in rapid streams, and always attract attention by their habit of feeding under water, searching among the gravel and stones for their insect prey.
The only other species at all allied to the single North American one are the C. ardesiacus of Central America, and C. pallasi of Eastern Asia. They may be easily distinguished by the following characters:—
Plumage beneath scarcely lighter than that above; head and neck brownish, darkest above. Wing, 4.00; tail, 2.15; bill, .50; tarsus, 1.20; middle toe, .85. Legs (in life), pinkish white (8,496 Fort Mass. N. M.). Hab. Mountains of Middle Province from Sitka, south to Guatemala … var. mexicanus.
Plumage beneath much lighter than that above,—very light along the median line; head not brownish, the contrast in shade between upper and lower surfaces very marked. Wing, 3.50; tail, 2.05; bill, .45; tarsus, 1.30; middle toe, .90. Legs yellow. (42,788 ♂ Costa Rica). Hab. Guatemala and Costa Rica … var. ardesiacus.24
Plumage uniform dusky-brown, middle of belly blackish; back and rump squamated with black; wings and tail blackish-brown. Total length, 8.00; wing, 4.00; tail, 2.50; tarsus, 1.25; bill (to rictus), 1.10 (Salvin). Hab. Lake Baikal to Kamtschatka; Amoorland; S. E. Siberia; Japan (Salvin) … var. pallasi.25
Cinclus pallasi, Bon. Zoöl. Jour. II, 1827, 52 (not the Asiatic species). Cinclus mexicanus, Sw. Phil. Mag. 1827, 368.—Sclater, Catal. 1861, 10.—Salvin, Ibis, 1860, 190; 1867, 120 (Guatemala).—Baird, Review, 60.—Dall & Bannister (Alaska).—Cooper, Birds Cal. 1, 25. Hydrobata mexicana, Baird, Birds N. Am. 1858, 229.—Cooper & Suckley, Rep. P. R. R, XII, II, 1859, 175 (nest). Cinclus americanus, Rich. F. B. A. II, 1831, 273. Cinclus unicolor, Bon.; C. mortoni, Towns.; C. townsendi, “Aud.” Towns.
Figures: Bonaparte, Am. Orn. II, 1828, pl. xvi, fig. 1.—Aud. Orn. Biog. pl. ccclxx, 435.—Ib. Birds Amer. II, pl. cxxxvii.
Sp. Ch. Above dark plumbeous, beneath paler; head and neck all round a shade of clove or perhaps a light sooty-brown; less conspicuous beneath. A concealed spot of white above the anterior corner of the eye and indications of the same sometimes on the lower eyelid. Immature specimens usually with the feathers beneath edged with grayish-white; the greater and middle wing-coverts and lesser quills tipped with the same. The colors more uniform. Length, 7.50; wing, 4.00; tail, 2.55.
Young. Similar to the adult, but much mixed with whitish medially beneath; this in form of longitudinal suffusions.
Autumnal and winter specimens have numerous transverse crescents of whitish on lower parts and wings,—these very especially conspicuous posteriorly; the secondaries are also conspicuously terminated with a white crescent. Bill brown, paler toward base of lower mandible. In spring and summer the bill entirely black, and the whitish markings almost entirely disappear; the young bird has a greater amount of white beneath than the adult in winter dress, and this white is disposed in longitudinal, not transverse, suffusions. The color of the legs appears to be the same at all seasons.
PLATE V.
1. Cinclus mexicanus, Sw. N. M., 8496.
2. Sialia mexicana, Sw. Cal., 10623.
3. Sialia sialis, Baird. D. C., 28245.