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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СКАЧАТЬ Tarsi short; about equal to the middle toe. Wings reaching beyond the middle of the tail. Bill thickened.

Genus SAXICOLA, Bechstein

      Saxicola, Bechstein, Gemeinnützige Naturg. 1802. (Type, S. œnanthe.)

Saxicola œnanthe

      Saxicola œnanthe, Bechst.

      18075

      Gen. Char. Commissure slightly curved to the well-notched tip. Culmen concave for the basal half, then gently decurving. Gonys straight. Bill slender, attenuated; more than half the length of head. Tail short, broad, even. Legs considerably longer than the head; when outstretched reaching nearly to the tip of tail. Third quill longest; second but little shorter. Claws long, slightly curved; hind toe rather elongated.

      As already stated, America possesses but a single member of this group of birds, so well represented in the Old World. The color is bluish-gray, with wings, a stripe through the eye, and the middle of exposed tail-feathers black.

Saxicola œnanthe, BechstTHE WHEAT-EAR

      Motacilla œnanthe, Linn. Syst. Nat. I, 1758, 186. Saxicola œnanthe, Bechst. “Gemein. Naturg. 1802,” and of European authors.—Holböll, Orn. Grœn. (Paulsen ed.), 1846, 23 (Greenland).—Baird, Birds N. Am. 1858, 220 (Europe); Review, 61.—Jones, Nat. Bermuda, 1859, 28 (Bermuda).—Coues, Pr. A. N. S. 1861, 218 (Labrador).—Reinhardt, Ibis, 1861, 5 (Greenland).—Dall & Bannister (Alaska). Saxicola œnanthoides, Vigors, Zoöl. Blossom, 1839, 19 (N. W. America).—Cassin, Ill. I, 1854, 208, pl. xxxiv (Nova Scotia).

      Sp. Char. (Description from European specimen.) Male in spring, forehead, line over the eye, and under parts generally white; the latter tinged with pale yellowish-brown, especially on the breast and throat. A stripe from the bill through, below, and behind the eye, with the wings, upper tail-coverts, bill and feet, black. Tail white, with an abrupt band of black (about .60 of an inch long) at the end, this color extending further up on the middle feather. Rest of upper parts ash-gray; quills and greater coverts slightly edged with whitish. Length, 6.00; wing, 3.45; tail, 2.50; tarsus, 1.05.

      Autumnal males are tinged with rusty; the black markings brown. The female in spring is reddish-gray; lores and cheeks brown; the black markings generally brownish, and not well defined. Eggs pale light blue. Nest on ground.

      Hab. An Old World species (Europe, Northern Africa, and Asia), abundant in Greenland, found probably as an autumnal migrant in Labrador, Canada, Nova Scotia, Bermuda, etc. Occurs also on Norton Sound, near Behring’s Straits. Very occasional in the Eastern States: Long Island.

Saxicola œnanthe

      Saxicola œnanthe.

      This bird appears to be abundant in Norton Sound, from which region Mr. Dall has recently brought specimens in full spring plumage. These are decidedly smaller than birds from Labrador and Greenland, but not distinguishable, and seem to agree precisely with skins from Central Europe.

      Habits. The well-known Wheat-ear is entitled to a place in our fauna, not only as an accidental visitor, but also as an occasional resident. Dr. H. R. Storer, of Boston, found them breeding in Labrador in the summer of 1848, and procured specimens of the young birds which were fully identified by Dr. Samuel Cabot as belonging to this species. In the following year Andrew Downs, of Halifax, gave me the specimen described and figured by Mr. Cassin. This was secured late in the summer near Cape Harrison, Labrador, where it had evidently just reared its brood. In 1860 Mr. Elliott Coues obtained another specimen on the 25th of August, at Henley Harbor. It was in company with two others, and was in immature plumage. Its occurrence in considerable numbers on the coast of Labrador is further confirmed by a writer (“W. C.”) in “The Field,” for June 10, 1871, who states that when in that region during the months of May and June he saw a number of “White Ears,” the greater proportion of them being males. He inferred from this that they breed in that country, the apparent scarcity of females being due to their occupation in nesting. Mr. Lawrence has one in his cabinet from Long Island, and the Smithsonian Institution one from Quebec. Specimens have also been obtained in the Bermudas.

      Holböll, in his paper on the fauna of Greenland, is of the opinion that the individuals of this species that occur there come from Europe, make their journey across the Atlantic without touching at Iceland, and arrive in South Greenland as early in the season as it does at the former place, the first of May. It reaches Godhaven a month later, at times when all is snowbound and the warmth has not yet released the insects on which it feeds. It is found as far north as the 73d parallel, and even beyond. In September it puts on its winter dress and departs.

      Mr. Dall states that several large flocks of this species were seen at Nulato, May 23 and 24, 1868, and a number of specimens obtained. They were said to be abundant on the dry stony hill-tops, but were rare along the river.

      The Wheat-ear is one of the most common birds of Europe, and is found, at different seasons, throughout that continent as well as in a large portion of Western Asia. It breeds throughout the British Islands as well as in the whole of Northern Europe and Asia.

      Its food is principally worms and insects, the latter of which it takes upon the wing, in the manner of a fly-catcher. The male bird is said to sing prettily, but not loudly, warbling even when on the wing, and hovering over its nest or over its partner. In confinement its song is continued by night as well as by day.

      The Wheat-ear begins to make its nest in April, usually concealing it in some deep recess beneath a huge stone, and often far beyond the reach of the arm. Sometimes it is placed in old walls, and is usually large and rudely constructed, made of dried bents, scraps of shreds, feathers, and rubbish collected about the huts, generally containing four pale blue eggs, uniform in color, and without spots, which measure .81 of an inch in length by .69 in breadth.

Genus SIALIA, Swainson

      Sialia, Swainson, Zoöl. Jour. III, Sept. 1827, 173. (Type Motacilla sialis, L.)

Sialia sialis

      Sialia sialis.

      1289

      Gen. Char. Bill short, stout, broader than high at the base, then compressed; slightly notched at tip. Rictus with short bristles. Tarsi not longer than the middle toe. Claws considerably curved. Wings much longer than the tail; the first primary spurious, not one fourth the longest. Tail moderate; slightly forked. Eggs plain blue. Nest in holes.

      The species of this genus are all well marked, and adult males are easily distinguishable. In all, blue forms a prominent feature. Three well-marked species are known, with a fourth less distinct. The females are duller in color than the males. The young are spotted and streaked with white.

Synopsis of Species

      Common Characters. Rich blue above, duller in the female. Beneath reddish or blue in the male, reddish or light drab in the female. Young with wings and tails only blue, the head and anterior parts of body with numerous whitish spots.

      A. Breast reddish, or chestnut.

      1. S. sialis. No chestnut on the back; throat reddish; abdomen and crissum white.

      Blue of a rich dark purplish shade. Tail about 2.75. Hab. Eastern Province United States, Cuba, and Bermudas … var. sialis.

      Blue of a greenish shade. Tail about 3.20. Hab. East Mexico and Guatemala … var. azurea.26

      2. СКАЧАТЬ



<p>26</p>

S. azurea, Baird, Rev. Am. Birds, 1864, 62. (S. azurea, Swainson.)